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Quarterly News for California Building Departments

Focus on the 2016 Codes

In this Issue

Focus on the 2016 Codes, compiled

A New Tool for Your Tool Box

code books

By Dan Chudy, Ph.D., CBO, LEED AP, CASp
Principal Project Manager – Willdan Engineering

architectural house drawing

A more logical way (at least for me) to organize and consolidate the most common residential code requirements is by segregating them according to the room in the house to which they apply.   With that in mind, I have compiled such a list in alphabetical order by room, and in 2016, the Willdan Letter published the list based on the 2013 California Codes (compiled here).

This year we are updating the list to correlate with the new 2016 California Codes.

NOTE: Although many of thecode citations herein are carry-overs from the 2013 California Codes, some are new or substantially revised. Those code citations which are either new or substantially revised are highlighted in GREEN. Those code citations that were in the 2013 California Codes, but are not found in the 2016 California codes are highlighted in BLUE. Key words are highlighted in YELLOW in order to assist the user in quickly finding particular items of interest.

Please understand that this effort is a work in progress and I make no claim that the list is all inclusive nor that it is without error. If any errors or omissions are found, please email me at so that the list can be improved.

CODE PROVISIONS SEGREGATED ALPHABETICALLY BY SPECIFIC ROOMS IN DWELLINGS

Click the + next to each title to view its description, or click the "Show All" button.

ATTIC

CRC R202 – Habitable attic not considered a story.  70 S.F. min. and compliant w/R304 & R305

CRC R303.1 - All habitable attics shall have an aggregate glazed area of not less than 8 percent of the floor area, and an openable window area to the outdoors of at least 4 percent for ventilation.

CRC R305.1 Ex 1 – For habitable attics with sloped ceilings, at least 50% of the required floor area shall have a minimum ceiling height of 7’-0” and ceiling heights of less than 5’-0” shall not be considered in the floor area calculation.

CRC R310.1 – At least (1) egress window required in habitable attic: 44” sill, 5.7 sq. ft. min. openable, 20” wide min., 24” tall min.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other approved opening control device.

CRC R313.3.1.2 Exception 1– AFES NOT required in unoccupied attic – except one head above fuel fired equipment.

CRC R314.3 – Smoke alarms required in habitable attics.

CRC R314.3.3(2) – Smoke alarms shall not be installed in unfinished attics.

CRC R315.3 – Carbon monoxide alarms required to be at outside each sleeping area in the immediate vicinity of the bedrooms and one on every level, including basements.

CRC R806.1 – Attic ventilation openings shall be corrosion resistant metal mesh, and shall be a minimum of 1/16” and shall not exceed 1/4”opening in mesh.

CRC R806.2. - The required ventilating area ratio is 1/150 of attic area, or 1/300 of attic area if half of the vent area is provided by ventilators more than 3 feet above eave vents providing the remaining portion of the vent area. 

CRC R807.1 – Attic access required if 30 sf. ft. or more in area AND 30” or more in vertical height as measured from the top of the ceiling joist to the bottom of the roof rafter (min. rough-in size is 22”X30”).

CRC Section R806.3 - a minimum 1-inch space shall be provided between the insulation and the roof sheathing and at the location of the vent.

CPC 507.5 – Drainage pan required under water heater if: in attic, attic/ceiling, floor/ceiling, or floor/subfloor where damage could result from leakage.  3/4” minimum drainage line to an approved location.

CPC 608.5(7)Temperature and Pressure relief valve (T & P) prohibited from discharging into drainage pan.

CMC 802.6.3.2 – Horizontal vent run limited to 75% of vertical run.

CMC 802.7.3.2 – Single wall vent pipe shall NOT originate or pass thru an attic space or concealed space (Amerivent flex vent single wall is not acceptable in attic but Duravent double wall flex vent is acceptable in attic).

CMC 304.4 – Minimum attic access is 22” X 30” (see also CRC R807.1).

CMC 304.4.1 and 304.4.2 – Access walkway 24” wide solid flooring with 30”X30” min. clear passageway and 20’-0” max from attic access opening if less than 6’-0” of head clearance.

CMC 304.4.3 – Level working platform not less than 30”X30” at service side of mechanical FAU in attic.

CMC 304.4.4 – Light and receptacle at mechanical unit with switch at attic access opening.  Duplex receptacle NOT to be mounted in upward facing position.

CMC 1313.4 - Gas shut-off to be within 6’-0” of mechanical FAU.

CEC 210.8(A) and 210.12(A) – Receptacle outlets in non-habitable attic do NOT require AFCI or GFCI protection (including the FAU circuit) and are not require to be Tamper-Resistant (CEC 406.12).

CEC 210.12(A)Arc-fault circuit interrupter (AFCI) required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’-0” maximum for #14 wire and 70’-0” for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52 – Maximum height of required convenience outlets is 5-1/2 feet above the floor.  No minimum height identified in Electrical Code (for disabled access see CBC 1136A.1, which is 48” maximum to top of box and 15” minimum to the bottom of the box).

CEC 210.52(A)1 – Spacing of electrical outlets to be such that no point along the wall line is more than 6’-0” from an outlet (e.g. 12’-0” maximum spacing from outlet to outlet along the wall line).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room, bathroom, hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 314.29 – Junction boxes in attic to be accessible.

CEC 334.23 & 320.23 – All electrical cable (such as Romex (NMC), Armored Cable (AC), etc.) within 6’-0” of attic access opening and NOT installed along the face of a rafter or joist shall be protected by a guard strip (aka: running board – see 334.15(A))

CEC 690.31(G) – PV DC conductors inside the building to be in metallic conduit or MC Cable

CEC 690.31(G)3 – PV conduit and junction boxes to be labeled “WARNING: PHOTOVOLTAIC POWER SOURCE” in 3/8” capital white letters on red background and reflective.  Labels to be spaced at 10’-0” intervals.

CRC R324.7.2.7– PV DC conductors in the attic shall be in metallic conduit and run along the bottom of load bearing members and labeled every 10’-0”.

CEC 110.8(d) & (e) and 150.0(a)R-22 (or higher – depending on climate zone and compliance approach used) minimum ceiling insulation (exception: R-19 for alterations)

CEC 150.0(a)2 – Attic access scuttle door to have insulation permanently attached and door to be gasketed to prevent leakage.

CEC 150.1(c)2 – Radiant barrier at roof required IF prescriptive approach is used and T-24 calcs specify Radiant Barrier at roof.  Radiant barrier (foil side) requires air space to be effective, therefore if placed over existing sheathing there must be a 1-inch thick spacer between (per CEC Blueprint issue 112– November 2015).

CEC 150.1(c)2 – If radiant barriers are required on the roof by the T-24 calcs, the Gable ends of the attic must also be provided with a radiant barrier.

CEC 150.0(j)2) – Pipe Insulation R4 (1”thick) pipe insulation required on all HOT water pipes 3/4” or larger to point of use and all HOT water pipes (regardless of size) to kitchen fixtures.  Also first 5’ of hot and cold water pipes at the water heater. Pipe insulation NOT required at framing penetrations.  Pipe in insulated wall cavity is acceptable ONLY if Quality Insulation Installation (QII) standards (HERS verification) are met.  Pipe in attic is exempt IF buried by at least 4” blown insulation.  Pipe Insulation to be 4” min from water heater flue.  Hot and cold water lines should be at least 2” apart (to allow 1” insulation on each pipe).

BASEMENT

CRC R302.13 – If not fire sprinklered, truss-type floor assemblies and solid sawn or composite joists smaller than 2”X10” exposed from the underfloor side are required to be protected with 1/2” gypsum board or other approved material.  Underfloor crawl space with no fuel-fired appliances or storage and 80 square feet per story are exempt.

CRC R303.1 - All habitable rooms shall have an aggregate glazed area of not less than 8 percent of the floor area, and an openable window area to the outdoors of at least 4 percent for ventilation.

CRC R305.1 – Minimum ceiling height 7’-0” in habitable spaces, hallways, bathrooms and portions of basements.

CRC R305.1 and R305.1.1Beams and other obstructions in basements containing habitable space may project to 6’-4” minimum above floor.

CRC R305.1.16’-8” minimum ceiling height in basement areas that ARE NOT habitable spaces or hallways.

CRC R310.1 – At least (1) egress window required in basements: 44” maximum sill height, 5.0 sq. ft. minimum openable area, 20” wide minimum, 24” tall minimum.  Window well requirements to comply with R310.2.

CRC R310.2.1 Exception – basements used only for mechanical equipment and not more than 200 S.F. don’t require egress windows.

CRC R310.2.3 – Window well min. size: 36” wide and 36” deep (from window) and 9 sq. ft. min. area.

CRC R310.2.3.1 – Window well ladder required if deeper than 44”.

CRC R310.2.3.2 – Window wells to be designed to drain.

CRC R314.3.3(9) – Smoke alarms required on the basement ceiling near the entry to the stairs.

CRC R315.3(2) – Carbon monoxide alarms required to be at outside each sleeping area in the immediate vicinity of the bedrooms and one on every level, including basements.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’-0” maximum for #14 wire and 70’-0” for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52 (G) – Basements to have at least (1) receptacle outlet

CEC 210.52 – Maximum height of required convenience outlets is 5-1/2 feet above the floor.  No minimum height identified in Electrical Code (for disabled access see CBC 1136A.1, which is 48” maximum to top of box and 15” minimum to the bottom of the box).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room, bathroom, hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5’-6” above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k) – All lighting to be high-efficacy.

BALCONY (see Deck)

BATHROOM, TOILET ROOM, POWDER ROOM

CRC R303.3 – Required ventilation: 3 square feet minimum glazing (half openable) or 50 cfm intermittent or 20 cfm continuous exhaust to outside (w/humidistat if tub or shower - see other more restrictive regulations in Energy code, Green Code and Mech code).

CRC R305.1 Ex #2 – NO minimum ceiling height at toilet room fixtures but they must be capable of being used for their intended purpose.

CRC R305.1 Ex #2 – 6’-8” minimum ceiling height at shower or tub/shower above a minimum 30”X30” area.

CRC R305.1 – Minimum ceiling height is 6’-8”in bathrooms, toilet rooms, etc.

CRC R306.4 – Hot and cold water required to lavatories, bath tubs, showers.

CRC R307.2 – Nonabsorbent wall finish to a height of 6’-0” above floor at shower or tub with shower head.

CRC R308.4.5 – Glazing less than 60” horizontally from shower’s edge or bathtub and less than 60” vertically from floor is considered a hazardous location. (Safety glass required)

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other approved opening control device.

CRC R313.3.1.2 Exception 3 – AFES not required in bathrooms of 55 sq. ft. or less in area.

CRC R314.3 (5) – Smoke alarms required to be at least 3’-0” from bathroom door or openings (when there is a tub or shower in the bathroom) unless it can’t be reasonably located elsewhere.            

CPC 402.5 – Water closet to be set at least 15” from center to side wall or side obstructions and 24” min. clear space in of toilet.

CPC 402.5 - Urinals to be set at least 12” from center to side wall or side obstructions

CPC 408.6 – Shower compartments shall have a minimum finished interior space of 1024 square inches and capable of encompassing a 30” diameter circle to a height of 70” above the drain.

CPC 504.1 – Water heaters in bathrooms or bedrooms can’t take combustion air from those rooms and must be in a closet for the exclusive use of the water heater and have gasketed self-closing doors with sealed threshold between the closet and the bedroom or bathroom.

CPC 804.1 – Generally, no indirect waste receptor is allowed in toilet or bathroom.  Exception for the standpipe for clothes washer drain which is allowed to be installed in toilet or bathroom when clothes washer is in the same room.

CMC 311.3(5) – Return air shall not be taken from bathrooms, toilet rooms, kitchens, closets

CMC T403.7 – 50 CFM min. intermittent ventilation required in all bathrooms (rooms with tub, shower, spa, etc) (w/humidistat if tub or shower - see other more restrictive regulations in Energy code, Green Code and Mech code)

Energy Code Lighting Mandatory Measures (150.0(k)) – Exhaust fans switched separately from lights

CMC 902.2 (& 701.4.1)– Fuel burning appliances shall not be installed in bedroom or bathroom unless room size is at least 50 cubic feet of area for every 1000 BTU/h of the name plate rating OR combustion air must be provided to the space from other areas.

CMC 911.1 – Decorative appliances for installation in vented fireplaces shall not be installed in bathrooms or bedrooms unless the appliance is listed and has the appropriate combustion air in the room (50 cf per 1000 BTU/hr per CMC 701.4)

CMC 912.2 (1) - Gas fireplaces shall be direct vent and sealed-combustion type (see also CGC 4.503.1)

CEC 210.8(A)(1) – GFCI outlets required in bathrooms

CEC 210.8(A)(9)GFCI outlets required where outlets are within 6’ of outside edge of bathtub or shower stall.

CEC 210.11(C)(3) – At least (1) 20 amp branch circuit is required in bathroom – no other outlets allowed on this circuit.

CEC 210.52(A) – General convenience receptacle outlet requirements (12’ spacing) NOT applicable in bathrooms.

CEC 210.52 (D) – electrical receptacle outlet to be within 3’ of basin rim (aka: lavatory).  If outlet is below top of basin, to be no more than 12” below.

CEC 210.70 (A)(1) – at least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt)

CEC 230.70(A)2  - Service disconnect not allowed in bathroom

CEC 404.4(C) - A switch shall not be installed within a bathtub or shower space unless a part of a listed tub or shower assembly.

CEC 406.9(C) – Receptacles shall not be installed within or directly over a bathtub or shower stall.

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

CEC 410.10(D) – Lights over tub/shower can’t be pendant type or hanging or ceiling fan and must be 3’ horizontally and 8’ vertically from tub or shower overflow rim.  Fixed type light fixtures that are 8’ or less above the tub or shower overflow rim and within the tub or shower area must be listed for use in damp location or for wet location if subject to shower spray.

CEC 690.13(A) – PV disconnect shall not be installed in bathrooms.

150.0(k) – All lighting to be high-efficacy

150.0(k) – Bathrooms to have at least (1) light fixture controlled by a vacancy sensor

150.0(j)2) – R4 (1”) pipe insulation required on all HOT water pipes ¾” or larger to point of use and all HOT water pipes (regardless of size) to kitchen fixtures.  Also first 5’ of hot and cold water pipes at the water heater. Pipe insulation NOT required at framing penetrations.  Pipe in insulated wall cavity is acceptable ONLY if Quality Insulation Installation (QII) standards (HERS verification) are met.  Pipe in attic is exempt IF buried by at least 4” blown insulation.  Pipe Insulation to be 4” min from water heater flue.  Hot and cold water lines should be at least 2” apart (to allow 1” insulation on each pipe)

150.0(o) – (ASHRAE 62.2) – Exhaust fans: 50 cfm min and 3 sone max sound level

CGC 4.303.1Water Usage: Toilets: 1.28 gal., Urinals: 0.125 gal. if wall mounted - 0.5 gal. if not wall mounted, Shower heads: 2.0 gal., Lavatory: 1.2 gal. (Note: California Civil Code 1101 requires some additions and alterations to retrofit existing noncompliant water fixtures to meet current water saving standards.  Noncompliant is defined as fixtures exceeding the following ratings: Toilets – 1.6 gal, Urinals – 1 gal, Shower heads = 2.5 gal, Lavs = 2.2 gal, Kitchen faucet = 2.2 gal)

CGC 4.506 (& CBC R303.3.1) – Bathrooms with tubs or showers to have Energy Star exhaust fans vented to outside the building and controlled by a humidistat unless a part of the whole house ventilation system (also 50 CFM min intermittent per CMC T403.7 and 3 sone max per T-24 150.0(a) & 150.2(a))

BEDROOM

CRC R302.5.1 – openings (i.e. doors) between a garage and a bedroom are prohibited.

CRC R303.1 - All habitable rooms shall have an aggregate glazed area of not less than 8 percent of the floor area, and an openable window area to the outdoors of at least 4 percent for ventilation

CRC R304.1 and R304.2– minimum room area 70 sf and minimum dimension 7’

R305.1 – Minimum ceiling height in habitable rooms is 7’

CRC R305.1 Ex 1 – For habitable rooms with sloped ceilings, at least 50% of the required floor area shall have a minimum ceiling height of 7’ and ceiling heights of less than 5’ shall not be considered in the floor area calculation.

CRC R308.4.3 – Window glass with bottom edge less than 18” above floor, AND top edge of glass more than 36” above floor, AND exposed area of an individual pane is larger than 9 square feet is required to be safety glass.

CRC R310.2 – Egress windows: 44” sill, 5.0 s.f. (first floor) or 5.7 s.f. (above first floor), 20”wide, 24” tall.  For openings into patios, see R303.8.1, R303.1 Ex#3, R303.2

CRC R310.4 – Bars over egress windows allowed IF they don’t obstruct required opening size and openable from the inside without key or special knowledge or greater force than window (the Fire Dept can (may) require approved exterior release for their use in emergencies)

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CRC R314.3 – Smoke alarms required in sleeping rooms (aka: bedrooms), outside sleeping room areas in the immediate area of the bedrooms (aka: hallways, etc.), on each story (including basements and habitable attics).  (See also H & S Code 13113.7)

CRC R314.3.3 (excerpt from NFPA 72 Section 29.8.3.4) – Smoke detectors shall not be located in the following areas:

  1. In unfinished attics or garages where the temperature can fall below 40 degrees or above 100 degrees,
  2. Within 20 feet of permanent cooking appliances (Ionization type can be within 10’ and photoelectric type can be within 6’),
  3. Within 3 feet of a bathroom door (with tub or shower) unless there is no other option for placement,
  4. Within 3 feet of an HVAC air supply register,
  5. Within 3 feet of the tips of the blades of a ceiling fan,
  6. In basements stairways the smoke alarm shall be at the bottom of the stairs,
  7. In coffered ceilings the smoke alarm shall be located at the highest portion of the ceiling.

CRC R314.3.3 Removed from 2016 CRC10 year battery only required on smoke alarms if they are the battery only type (not hard wired) NOTE: THIS REQUIREMENT HAS BEEN REMOVED FROM THE 2016 CRC

CRC R314.4 – Smoke alarms to be interconnected (exceptions for some alterations and repairs)

CRC R315.2.1 – CO alarms NOT required if no fuel-burning appliance and no attached garage

CRC R315.3 – CO alarms required to be at outside each sleeping area in the immediate vicinity of the bedrooms and on every level (including basement) of the dwelling (see also H & S Code 17926)

CRC R315.3 - CO alarms required in bedrooms where there is a fuel burning appliance in the bedroom or its attached bathroom.

CRC R315.5 – CO alarms to be hard wired with battery backup in new construction and some remodels.

CRC R315.5 Exception 4 – In existing dwellings where alteration do not result in the removal of wall or ceiling finishes a battery only or plug-in CO alarm may be used (NO mention of a 10-year battery)

CRC R315.7 – CO alarms to be interconnected when more than 1 unit installed

CPC 504.1 – Water heaters in bathrooms or bedrooms can’t take combustion air from those rooms and must be in a closet for the exclusive use of the water heater and have gasketed self-closing doors with sealed threshold between the closet and the bedroom or bathroom.

CMC 902.2 (& 701.4.1)– Fuel burning appliances shall not be installed in bedroom or bathroom unless room size is at least 50 cubic feet of area for every 1000 BTU/h of the name plate rating OR combustion air must be provided to the space from other areas.

CMC 911.1 – Decorative appliances for installation in vented fireplaces shall not be installed in bathrooms or bedrooms unless the appliance is listed and has the appropriate combustion air in the room (50 cf per 1000 BTU/hr per CMC 701.4)

CMC 912.2 (1) - Gas fireplaces shall be direct vent and sealed-combustion type (see also CGC 4.503.1)

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets)

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”)

CEC 210.52 – Maximum height of required convenience outlets is 5-1/2 feet above the floor.  No minimum height identified (unless for disabled access CBC 1136A.1 - 48” max to top of box and 15” minimum to the bottom of the box).

CEC 210.52(A)(1) – Spacing of electrical outlets to be such that no point along the wall line  is more than 6’ from an outlet (eg. 12’ spacing between outlets).  A wall space is any wall 2’ or more in width.

CEC 210.70 (A)(1) – at least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt)

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

CRC R313.3.2.4.2.1 – Pendent sprinkler heads to be no closer than 3’ to the center of ceiling fan or ceiling mounted light fixture.

CEC 314.27 (C) – Paddle fan support boxes to be labeled for such use

150.0(k) – All lighting to be high-efficacy

CGC 4.503.1 – Gas fireplaces shall be direct-vent and sealed-combustion type.  Wood stoves to comply with US EPA New Source Performance Standards (NSPS) and be labeled to meet emission standards. (see also CMC 902.2 and 701.4.1 for combustion air requirements for wood stoves)

CARPORT

CRC R302.6 – No separation required between carport and house if no enclosed area above.

CRC Table R302.6 –5/8” on ceiling only when habitable space is above.

CRC R309.2 – Shall have noncombustible floor (asphalt floor OK if at ground level), floor to be sloped to a drain or toward vehicle doorway.

CRC R309.2 – Minimum 2 sides open

CRC 309.2 – If carport is NOT open on 2 or more sides is considered a garage.

CRC R309.6 – AFES required in attached garages and carports with habitable space is above.

CRC R313.3.1.2 Exception 4 – AFES not required in detached garages and carports with no habitable space above.

CEC 210.8(A)(2) – GFCI outlets required in carport and similar areas.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt)

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 & 20 amp outlets unless for dedicated appliance or luminaries or over 5.5’ above floor.

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k)(3)Outdoor lighting must be high-efficacy AND have motion sensor plus photocell or astronomical time clock AND a manual On/Off switch that does not override the automatic controls.

CLOSET

CRC R313.3.1.2 Exception 2 – AFES not required in closets, pantries, etc. which do not exceed 24 square feet in area, with the smallest dimension not greater than 3’.

CPC 804.1 –No indirect waste receptor is allowed in closet, cupboard or storeroom. 

CMC 311.3(5) – Return air shall not be taken from bathrooms, kitchens, closets.

CMC 701.6 – Mechanical closet outdoor combustion air opening requirements (see code).

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52 – Closets are exempt from the general convenience outlet requirements (12’ spacing).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

CEC 410.16(B) – Incandescent lights with open or or partially enclosed lamps and pendent lights are prohibited in closets.

CEC 410.16(C) – Fluorescent light = 6” from shelf, LED or incandescent = 12” from shelf with some exceptions for LED (see Energy Code requirement for High Efficacy lighting).

150.0(k) – All lighting to be high-efficacy.

150.0(k)2(K) Exception – Light dimmers are not required in closets less than 70 square feet in area.

DECK / BALCONY

CRC R105.1 #10 – Exempt from Permit if less than or equal to 200 square feet and 30” or less above grade and not attached to a dwelling and does NOT serve the required exit door.

CRC R311.3 - Exterior doors to have min. 36” deep landings by the width of the door, on each side (exception for 36” depth if balcony is less than 60 s.f. in area).

CRC R311.5 – Positive anchorage to primary structure (NO toe nails or nails in withdrawal).

CRC R507.1 – Decks cannot use nails in withdrawal or toenails for the attachment to the house

CRC R337.7.8 – Exposed underfloor or underside of overhang in Wildland Urban Fire Interface zones shall be constructed with Ignition-resistant or Noncombustible material. 

CRC R337.9 - The walking surface of decks, porches, balconies and exterior stairs located within 10’ of a building in Wildland Urban Fire Interface zones shall be constructed with Ignition-resistant or Noncombustible material. 

CEC 210.8(A)3 – GFCI outlets required outdoors.

CEC 210.52 (E)(3) – Balconies, decks and porches to have at least one receptacle outlet if deck is attached to dwelling AND access to balcony is from within the dwelling (Max. height of outlet is 6.5’ above deck).

CEC 210.70 (A) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 314.27 (C) – Paddle fan support boxes to be labeled for such use.

CEC 406.9 (A) & (B) – Outdoor receptacle outlets to be weatherproof covered with the chord plugged in if in a wet location (w/o chord plugged in if in damp location).  Damp location is protected from rain by roof (i.e. under a patio cover).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k)(3) – Outdoor lighting must be high-efficacy AND have motion sensor plus photocell or astronomical time clock AND a manual On/Off switch that does not override the automatic controls.

DINING ROOM

CRC R303.1 - All habitable rooms shall have an aggregate glazed area of not less than 8 percent of the floor area, and an openable window area to the outdoors of at least 4 percent for ventilation.

CRC R303.2 – Natural light and ventilation may be taken from an adjoining room if at least one-half of the area of the common wall is open and unobstructed AND provides an opening of not less than 1/10 of the floor area of the interior room AND not less than 25 square feet.

CRC R308.4.3 – Window glass with bottom edge less than 18” above floor, AND top edge of glass more than 36” above floor, AND exposed area of an individual pane is larger than 9 square feet is required to be safety glass.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52 – Maximum height of required convenience outlets is 5-1/2 feet above the floor.  No minimum height identified (unless for disabled access CBC 1136A.1 - 48” max to top of box and 15” minimum to the bottom of the box).

CEC 210.52(A)1 – Spacing of electrical outlets to be such that no point along the wall line  is more than 6’ from an outlet (e.g. 12’ spacing between outlets).  A wall space is any wall 2’ or more in width.

CEC 210.52(B) – Small appliance branch circuits for kitchen to also serve all dining room wall receptacles and refrigeration outlets.

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

CRC R313.3.2.4.2.1 – Pendent sprinkler heads to be no closer than 3’ to the center of ceiling fan or ceiling mounted light fixture.

CEC 314.27 (C) – Paddle fan support boxes to be labeled for such use

150.0(k) – All lighting to be high-efficacy.

ENTRY & FOYER (including Exits)

CRC R308.4.3 – Window glass with bottom edge less than 18” above floor, AND top edge of glass more than 36” above floor, AND exposed area of an individual pane is larger than 9 square feet is required to be safety glass.

CRC R311.2 – Exit doors shall be openable from the inside without the use of a key (i.e. double key dead bolt).

CRC R311.2 – Every dwelling shall have at least (1) side-hinged exit door with a minimum 32” clear width by 78” clear height opening (measured with door open 90 degrees).

CRC R311.3 – Landings at exterior doors to be 36” deep in direction of exit travel, the width of the door served, 7.75” max step down (from top of threshold to landing) provided that the door does NOT swing over the landing.  Otherwise, 1.5” max from top of threshold when door swings over landing. 2% max slope.

CRC R311.3.2 Exception – No landing required on exterior side of door where stairway is 2 or fewer risers ( 1 tread) and door does not swing over stairway.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CRC R313.3.1.2 Exception 4 – AFES not required in unheated entry areas adjacent to an exterior door.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52(E)(1) – At least 1 exterior receptacle outlet required at front and 1 at rear of house.  Not more than 6.5’ above grade level.

CEC 210.52(H) – Hallways 10’ long or more shall have at least (1) receptacle outlet.

CEC 210.52(I) – Foyers which are NOT a part of a hallway and more than 60 square feet in area shall have at least (1) receptacle on each wall that is more than 3’ in width.

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.9 (A) & (B) – Outdoor receptacle outlets to be weatherproof covered with the chord/plugged in if in wet location (w/o chord plugged in if in damp location).  Damp location is protected from rain by roof (i.e. under patio cover).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k) – All lighting to be high-efficacy.

FRONT ROOM or LIVING ROOM

SCAQMD Rule 445 – Applicable to portions of Southern California.  Wood burning fireplaces NOT permitted in new construction (except if above 3,000 in elevation or no infrastructure for natural gas service within 150’ of property). Rule applies to all permanently installed indoor and outdoor wood burning fireplaces or fire pits.

CRC R303.1 - All habitable rooms shall have an aggregate glazed area of not less than 8 percent of the floor area, and an openable window area to the outdoors of at least 4 percent for ventilation.

CRC R308.4.3 – Window glass with bottom edge less than 18” above floor, AND top edge of glass more than 36” above floor, AND exposed area of an individual pane is larger than 9 square feet AND where a walking surface is within 36” horizontally of the glass is required to be safety glass. (There are a few exceptions.)

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CMC 912.2 (1) - Gas fireplaces shall be direct vent and sealed-combustion type (see also CGC 4.503.1)

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52 – Maximum height of required convenience outlets is 5-1/2 feet above the floor.  No minimum height identified (unless for disabled access CBC 1136A.1 - 48” max to top of box and 15” minimum to the bottom of the box).

CEC 210.52(A)(1) – Spacing of electrical outlets to be such that no point along the wall line  is more than 6’ from an outlet (e.g. 12’ spacing between outlets).  A wall space is any wall 2’ or more in width.

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

CRC R313.3.2.4.2.1 – Pendent sprinkler heads to be no closer than 3’ to the center of ceiling fan or ceiling mounted light fixture.

CEC 314.27 (C) – Paddle fan support boxes to be labeled for such use.

150.0(k) – All lighting to be high-efficacy.

150.0(e) – When gas logs, gas log lighters, or decorative gas appliances are installed in a fireplace, the flue damper is to be blocked open.

CGC 4.503.1 – Gas fireplaces shall be direct-vent and sealed-combustion type.  Wood stoves to comply with U.S. EPA New Source Performance Standards (NSPS) and be labeled to meet emission standards.

GARAGE

CRC R202 – Accessory structures (i.e. garages, etc.) may be unlimited in area and 3 stories in height.

CRC R302.1 #4 – Detached garages w/in 2’ of PL are limited to 4” max eave projections.

CRC R302.5.1 – Openings (i.e. doors) between a garage and a bedroom are prohibited.

CRC R302.5.1 – Requirements for doors between house and garage:

w/o AFES w/AFES
Solid wood or steel or 20 minute rated 1-3/8” No specified type, rating, or thickness
Self-closing & self-latching Self-closing & self-latching

CRC R302.5.2 - Ducts in the garage and ducts penetrating the walls or ceilings separating the dwelling from the garage shall be constructed of a minimum No. 26 gage (0.48mm) sheet steel or other approved material and shall have no openings into the garage.

CRC R302.5.3 and R302.11, Item 4 – Pipe, vent, duct and wire penetrations of the garage firewall need not be sealed with a listed firestop but do need to be sealed to prevent passage of flame with an approved material.

CRC R309.1 – Floor to slope to a drain or toward vehicle doorway, noncombustible floor required.

CRC Table R302.6 – ½” gyp board between house and garage – 5/8” on ceiling if habitable space above, ½” on exterior wall (detached garage) when less than 3’ to dwelling.

CRC R309.5 – Zero lot line subdivision garages to be provided with residential sprinklers or quick-response sprinklers.

CRC R309.5 – Garage door NOT considered an obstruction to AFES sprinkler heads.

CRC R309.6 – AFES required in attached garages and carports with habitable space above.

CRC R311.1 – Required exit can NOT pass through the garage.

CRC R311.3.1 Exception - Landing or floor on the exterior side shall not be more than 7-3/4 inches below the top of the threshold provided the door does not swing over the landing or floor.

CRC R311.7.6 Exception – Landing not required at top of stairs from garage to house provided door does not swing over stairs.

CRC R313.3.1.2 Exception 4 – AFES not required in detached garages.

CRC R314.3.3 – Smoke alarms shall not be installed in garages.

CBC Table 1607.1, footnote a - Structural members of garage or carport floor systems shall be design to support a 3,000 lbs. point load on an area 4.5” X 4.5”. 

CRC R302.5.3 and R302.11, Item 4 – Pipe, vent, duct and wire penetrations of the garage firewall need not be sealed with a listed firestop but do need to be sealed to prevent passage of flame with an approved material.

CPC Table 501.1(1) – First Hour Rating (minimum hot water production capacity for storage type water heaters):

# Bathrooms 1 – 1.5 2 – 2.5 2.5 – 3.5
# Bedrooms 1 2 3 2 3 4 5 3 4 5 6
1st Hour Rating 42 54 54 54 67 67 80 67 80 80 80

CPC 507.2 – Seismic straps required at upper and lower 1/3rd of water heater and at least 4” above the control box at the bottom.

CPC 507.4 – Drainage pan under water heater if: in attic, on floor/ceiling, floor/subfloor where damage results from leakage.  ¾” minimum drainage line to approved location.

CPC 507.13 - Water heater burner element to be 18” or more above garage floor (unless FVIR listed).

CPC 507.13.1 – Water heater or other appliance to be protected from physical damage if in path of vehicle by either protective barriers, being elevated, or located out of the normal vehicular path.

CPC 509.10.7.1 – Single wall vent maximum horizontal length is 75% of its height.  Double wall vent maximum horizontal length is 100% of its height.

CPC 608.5 – Temperature & Pressure (T & P) relief valve to discharge through an air gap to a drainage system or to the outside of the building between 6” – 24” above grade and pointing downward without threads on the termination pipe.  Not allowed to discharge into a water heater drain pan. 

CPC 1212.8 – Sediment trap shall be as close to appliance inlet as practical with a 3” minimum nipple on down leg. (Exempt appliances: ranges, clothes dryers, decorative appliances in fireplaces, outdoor grills, illuminating appliances.)

CPC Table 1216.2(1) and manufacturer’s installation instructions – Tankless water heaters usually require a minimum ¾” gas line (some allow a ½” gas line up to 24’ or so – check w/mfg specs).

CMC 305.1 – Appliances with burner elements (i.e. water heater, FAU, etc.) to be 18” or more above garage floor (unless FVIR listed).

CMC 305.1.1 – Appliance to be protected from physical damage if in path of vehicle by either protective barriers, being elevated, or located out of the normal vehicular path.

CMC 802.10.5 – Joints in vent connectors to be secured with sheet metal screws (no mention of number of screws) or per manufacturer’s specifications.

CEC 210.8(A)(2) – GFCI outlets required in garages (ALL receptacle outlets in garage – including garage door opener –changed in 2008).

CEC 210.17 – Electric vehicle charging outlets shall be supplied by a separate (i.e. dedicated) circuit, with no other outlets.

CEC 210.52 (G) – Basements and garages to have at least (1) receptacle outlet (detached garages and accessory building without electrical power are exempt).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

CEC 334.15(B) – Any exposed Romex (nonmetallic-sheathed cable, NM, NMC) that is subject to physical damage must be in conduit (AHJ to determine if romex above 8’ is subject to physical damage in garage)

Cal Green Code 4.106.4.1 – 1” conduit from main electrical panel to a box or enclosure in the garage for future electric vehicle charger circuit.  (NO wiring or overcurrent device is required to be installed until the charger unit is installed.)

150.0(k) – All lighting to be high-efficacy.

150.0(k) – Garage to have at least (1) high efficacy light fixture controlled by a vacancy sensor.

150.0(k)(3) – Outdoor lighting must be high-efficacy AND have motion sensor plus photocell or astronomical time clock AND a manual On/Off switch that does not override the automatic controls.

150.0(n) High Efficiency Water Heater Ready – 120 V receptacle within 3’ of water heater, if type B vent used - vent with straight pipe to exterior, condensate drain no more than 2” above base of water heater to outside, gas supply capacity of 200K BTUH (1/2” gas pipe DOESN’T work – check CPC Table 1216.2(1)).

150.0(j)2) – R4 (1”) pipe insulation required on all HOT water pipes ¾” or larger to point of use and all HOT water pipes (regardless of size) to kitchen fixtures.  Also first 5’ of hot and cold water pipes at the water heater. Pipe insulation NOT required at framing penetrations.  Pipe in insulated wall cavity is acceptable ONLY if Quality Insulation Installation (QII) standards (HERS verification) are met.  Pipe in attic is exempt IF buried by at least 4” blown insulation.  Pipe Insulation to be 4” min from water heater flue.  Hot and cold water lines should be at least 2” apart (to allow 1” insulation on each pipe).

CGC 4.106.4.1 – 1” conduit from main electrical panel to a box or enclosure in the garage for future electric vehicle charger circuit.  (NO wiring or overcurrent device is required to be installed until the charger unit is installed).

CGC 4.106.4.1.1 – Electrical service or subpanel to be labeled “EV Capable” at the reserved 40 amp circuit.  Also required to label the termination box or enclosure as “EV Capable”.

HABITABLE SPACE

CRC R202 – Bathrooms, toilet rooms, closets, halls, storage, utility spaces NOT considered habitable space.

CRC R303.1 - All habitable rooms shall have an aggregate glazed area of not less than 8 percent of the floor area, and an openable window area to the outdoors of at least 4 percent for ventilation.

CRC R303.9 – Heat required to minimum 68 degrees F, and measured 3’ above floor and 2‘ from exterior walls.

CRC R304.1 – Habitable rooms shall have a floor area of at least 70 square feet.

CRC R305.1 – Minimum ceiling height 7’-0”.

CRC R308.4.3 – Window glass with bottom edge less than 18” above floor, AND top edge of glass more than 36” above floor, AND exposed area of an individual pane is larger than 9 square feet is required to be safety glass.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k) – All lighting to be high-efficacy.

HALLWAY

CRC R305.1 – Minimum ceiling height 7’-0”.

CRC R311.6 – Minimum width 36”.

CRC R308.4.3 – Window glass with bottom edge less than 18” above floor, AND top edge of glass more than 36” above floor, AND exposed area of an individual pane is larger than 9 square feet is required to be safety glass.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CRC R314.3 – Smoke alarms required in sleeping rooms (aka: bedrooms), outside sleeping room areas in the immediate area of the bedrooms (aka: hallways, etc.), on each story (including basements and habitable attics).  (See also H & S Code 13113.7)

CRC R314.3.3 (excerpt from NFPA 72 Section 29.8.3.4) – Smoke detectors shall not be located in the following areas:

  1. In unfinished attics or garages where the temperature can fall below 40 degrees or above 100 degrees;
  2. Within 20 feet of permanent cooking appliances (Ionization type can be within 10’ and photoelectric type can be within 6’);
  3. Within 3 feet of a bathroom door (with tub or shower) unless there is no other option for placement;
  4. Within 3 feet of an HVAC air supply register;
  5. Within 3 feet of the tips of the blades of a ceiling fan;
  6. In basements stairways the smoke alarm shall be at the bottom of the stairs;
  7. In coffered ceilings the smoke alarm shall be located at the highest portion of the ceiling.

CRC R314.3.3 Removed from 2016 CRC10 year battery only required on smoke alarms if they are the battery only type (not hard wired).  NOTE: THIS REQUIREMENT HAS BEEN REMOVED FROM THE 2016 CRC

CRC R314.4 – Smoke alarms to be interconnected (exceptions for some alterations and repairs).

CRC R315.2.1 – CO alarms NOT required if no fuel-burning appliance and no attached garage.

CRC R315.3 – CO alarms required to be at outside each sleeping area in the immediate vicinity of the bedrooms (aka: hallways, etc.) and on every level (including basement) of the dwelling. (See also H & S Code 17926)

CRC R315.5 – CO alarms to be hard wired with battery backup in new construction and some remodels.

CRC R315.5 Exception 4 – In existing dwellings where alteration do not result in the removal of wall or ceiling finishes a battery only or plug-in CO alarm may be used.

CRC R315.7 – CO alarms to be interconnected when more than 1 unit installed.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI. receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52 (H) – Hallways more than 10’ long require at least (1) receptacle outlet (the general rule of 12’ spacing is not applicable to hallways).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k) – All lighting to be high-efficacy.

150.0(k)2(K) Exception – Light dimmers are not required for hallway lights.

150.0(i) – Setback thermostat required unless an Energy Management Control System (ECMS) is installed.

KITCHEN

CRC R303.1 - All habitable rooms shall have an aggregate glazed area of not less than 8 percent of the floor area, and an openable window area to the outdoors of at least 4 percent for ventilation.

CRC R304.2 – Kitchens are exempt from minimum floor area and minimum dimension requirements.

CRC R306.4 – Hot and cold water required to kitchen sink.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CRC R314.3.3 – Smoke alarms required to be minimum 20’ from permanent cooking equipment (10’ if ionization type alarm equipped with silencing switch or photoelectric type alarm).

CPC 807.3 – Dishwasher air gap to be installed with the flood-level marking (FL) at or above the flood level of the sink or drain board, whichever is higher.

CMC 311.3(5) – Return air shall not be taken from bathrooms, toilet rooms, kitchens, closet0s.

CMC T403.7 – Kitchen exhaust fan required: 100 cfm if intermittent or 50 cfm if continuous and 3 sone max sound level per T-24 150.0(a) & 150.2(a).

CMC 504.2 Exception - Domestic kitchen downdraft grill-range ventilation installed under a concrete slab floor may be of approved Schedule 40 PVC.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.8(A)(6) – GFCI outlets required for all counter top outlets and within 6’ of sinks.

CEC 210.8(D)Dishwasher circuits require GFCI protection.

CEC 210.11 (C)(1) and 210.52(B)(1) – Two 20 amp small appliance branch circuits required for kitchen and dining room (including refrigerator outlet) (or refrigerator can be on a dedicated 15 amp or more circuit).

CEC 210.12(A) – AFCI protected outlets required on all 120 volt, 15 and 20 amp kitchen outlets.

CEC 210.52 – Maximum height of required convenience outlets is 5-1/2 feet above the floor.  No minimum height identified (unless for disabled access CBC 1136A.1 - 48” max to top of box and 15” minimum to the bottom of the box).

CEC 210.52(A)1 – Spacing of electrical outlets to be such that no point along the wall line  is more than 6’ from an outlet (e.g. 12’ spacing between outlets)

CEC 210.52 (B) – Countertop spacing: 12” or wider countertop to be at least (1), no more than 24” from any point along the countertop wall to an outlet (i.e. 4’ between), islands or peninsular countertops more than 24” to have (1).

CEC 210.52(B)(1) – Small appliance branch circuits for kitchen to also serve all dining room wall receptacles and refrigeration outlets (or refrigerator can be on a dedicated 15 Amp or more circuit).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt)

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k) – All Kitchen lights to be high efficacy (Exhaust hood lights are EXEMPT).

150.0(k)(1)(c) – Recessed lights – Insulation Contact rating (IC) required, also to be certified Air Tight (AT), and to be sealed or gasketed or caulked between ceiling and light housing.

150.0(k)2(L) – Under cabinet lights to be switched separately from other lights.

150.0(j)2) – R4 (1”) pipe insulation required on all HOT water pipes ¾” or larger to point of use and all HOT water pipes (regardless of size) to kitchen fixtures.  Also first 5’ of hot and cold water pipes at the water heater. Pipe insulation NOT required at framing penetrations.  Pipe in insulated wall cavity is acceptable ONLY if Quality Insulation Installation (QII) standards (HERS verification) are met.  Pipe in attic is exempt IF buried by at least 4” blown insulation.  Pipe Insulation to be 4” min from water heater flue.  Hot and cold water lines should be at least 2” apart (to allow 1” insulation on each pipe).

CGC 4.303.1 – Water Usage: Kitchen faucets: 1.8 gal (SB 407:2.2 gal max) (Note: SB 407, aka: California Civil Code 1101, requires some additions and alterations to retrofit existing noncompliant water fixtures to meet current water saving standards.  Noncompliant is defined as a Kitchen faucet greater than 2.2 gal/min flow rate.

LAUNDRY AREA

CRC R105.2 – Clothes dryers exempt from permits.

CRC R305.1 – Laundry rooms shall have a ceiling height of not less than 6’-8”.

CRC R306.4 – Hot and cold water required to washing machine outlets.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CPC 507.5 – Drainage pan under water heater if: in attic, on attic-ceiling or floor-ceiling or floor-subfloor where damage could result from leakage.  ¾” minimum drainage line to approved location.  Pan to be 1.5” in depth.

CPC 608.5 – Temperature & Pressure (T & P) relief valve to discharge through an air gap to a drainage system or to the outside of the building between 6” – 24” above grade and pointing downward without threads on the termination pipe.  Not allowed to discharge into a water heater drain pan. 

CPC 804.1 – Clothes washer stand pipe limited to between 18” – 30” above trap.  Trap to be between 6” – 18” above floor.

CMC 504.4 – Domestic type (Type 1) clothes dryer ducts shall NOT be connected with screws or other fasteners that extend into the duct, and shall terminate outside with a backdraft damper and where joining ducts, the male end shall be inserted in the direction of airflow.

CMC 504.3 – Clothes dryer ducts shall NOT extend through plenums or ducts (CAN’T FIND IN 2016 CODE)

CMC 504.2.2 - Domestic type (Type 1) clothes dryer ducts shall be a minimum of 4” in diameter.  The exhaust duct shall not exceed a total combined horizontal and vertical length of 14 feet, including two 90 degree elbows.  Two feet shall be deducted for each 90 degree elbow in excess of two.

CMC Section 504.4.1 - Clothes dryer to be provided with make-up air in accordance with manufacturer’s specifications.

CMC Section 504.4.1 - Where a closet is designed for the installation of a clothes dryer, an opening of not less than 100 square inches for makeup air shall be provided in the door or by other approved means. 

CEC 210.8(A)(10) – All 125 volt, 15 and 20 amp receptacle outlets in Laundry area to be GFCI protected.

CEC 210.11(C)(2) – At least (1) 20 amp branch circuit required for laundry receptacle outlet(s) – no other outlets allowed on this circuit.

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house, including laundry areas (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.52(A) – General convenience receptacle outlet requirements (12’ spacing) NOT applicable in laundry rooms (UNLESS you consider the “or similar room or area” language to apply).

CEC 210.52(F) - Provide at least one receptacle outlet for the laundry equipment.

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k) – All lighting to be high-efficacy.

150.0(k) – Laundry to have at least (1) high efficacy light fixture controlled by a vacancy sensor.

150.0(j)2) – R4 (1”) pipe insulation required on all HOT water pipes ¾” or larger to point of use and all HOT water pipes (regardless of size) to kitchen fixtures.  Also first 5’ of hot and cold water pipes at the water heater. Pipe insulation NOT required at framing penetrations.  Pipe in insulated wall cavity is acceptable ONLY if Quality Insulation Installation (QII) standards (HERS verification) are met.  Pipe in attic is exempt IF buried by at least 4” blown insulation.  Pipe Insulation to be 4” min from water heater flue.  Hot and cold water lines should be at least 2” apart (to allow 1” insulation on each pipe).

150.0(o) – ASHRAE 62.2 – Laundry rooms must be built with a duct to the outdoors, to be connected to the clothes dryer.  Warm moist air from clothes dryer is prohibited from being used in the home for heating purposes (some cold climates like this warm/moist air to be used in the home – but it is prohibited by the ASHRAE standards because of the dust in the exhaust air).

LIVING ROOM (see FRONT ROOM)

MUD ROOM (aka UTILITY ROOM, MECHANICAL CLOSET)

CRC R305.1 – Minimum ceiling height 7’-0”.

CRC R306.4 – Hot and cold water required to washing machine outlets.

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CRC R313.3.1.2 Exception 4 – AFES not required in unheated entry areas (such as mud rooms) adjacent to an exterior door.

FAU and Water heater requirements

CEC 210.12(A)Arc-fault circuit interrupter required for outlets in most rooms of house (except: bathrooms, garages, non-habitable attics, unfinished basements, and exterior outlets).

CEC 210.12(B)AFCI circuits wire length limited from AFCI breaker to first receptacle outlet or AFCI receptacle to next receptacle outlet is 50’ maximum for #14 wire and 70’ for #12 wire.  The first AFCI outlet to be marked as such (i.e. “First AFCI Outlet”).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

150.0(k) – All lighting to be high-efficacy.

PATIO, PATIO ENCLOSURE, SUNROOM, PORCH

CRC R301.2.1.1.1 – Sunrooms to comply with AAMA/NPEA/NSA 2100-12 standards.  These standards are different than CRC Appendix H requirements.

CRC R303.1 Ex #3 – Natural ventilation from patios and sunrooms can be used in adjoining rooms if more than 40% of the exterior walls are open or enclosed only with insect screen.

CRC R303.2 Exception – Opening for Light and ventilation from patio to be 20 Sq. Ft. min (openable) or 10% (openable) of floor area of room.

CRC R303.8.1 - Required windows may open onto patio or sunroom as long as ceiling is at least 7’ tall and 40% min. of sunroom walls are open (or insect screening).

CRC R312.2.1 – When fall from window would be more that 72” to surface below, window sill to be 24” min. above floor OR, if less than 24” above floor, window opening shall not allow the passage of a 4” diameter sphere or other device to other approved opening control device.

CRC R313.3.1.2 Exception 4 – AFES not required in open attached porches.

CRC R337.7.6 - The exposed underside of exterior porch ceilings in designated Fire Hazard Severity Zones shall be protected by specified noncombustible or ignition resistant materials. 

CRC Appendix H – Patio Enclosures - AH103.1 – Longer wall plus one additional wall to be 65% open or glazed below 6’-8” (glass, insect screen, translucent plastic are OK).

CRC Appendix H – Patio Enclosures - AH103.2 – Bedroom windows – Patio covers over bedroom egress windows to be unenclosed.

CRC Appendix H (AH103.1) – Patio enclosure glass (in enclosure walls) to be tempered IF required by CRC R308 (Safety glass is required if in a hazardous location.  One example where safety glass is required is where the glass meets ALL of the following criteria: one exposed pane is greater than 9 square feet AND the bottom edge of the glass is less than 18” above floor AND the top edge of glass is more than 36” above the floor AND there are walking surfaces within 36” horizontally of the glass – there are a few exceptions see R308.4.3)

CEC 210.8(A)(3) – GFCI outlets required outdoors.

CEC 210.52(E)(1) – At least (1) receptacle outlet required at front and (1) at rear of house.  Not more than 6.5’ above grade level.

CEC 210.52 (E)(3) – Balconies, decks and porches to have at least one receptacle outlet if deck is attached to dwelling AND access to balcony is from within the dwelling (Max. height of outlet is 6.5’ above deck).

CEC 210.70 (A)(1) – At least (1) wall switched light outlet required in every habitable room and bathroom and hallway, stairway, garage, exterior side of outdoor grade level entrances (garage vehicle doors are exempt).

CEC 406.9 (A) & (B) – Outdoor receptacle outlets to be weatherproof covered with the chord/plug in if in wet location (w/o plug in if in damp location).  Damp location is protected from rain by roof (i.e. under patio cover).

CEC 406.12 – Tamper resistant receptacle outlets for all non-locking 120V/15 and 20 amp outlets unless for luminaries or over 5.5’ above floor or a single outlet for a single dedicated appliance which is not easily moved or a duplex outlet for (2) dedicated appliances.

CRC R313.3.2.4.2.1 – Pendent sprinkler heads to be no closer than 3’ to the center of ceiling fan or ceiling mounted light fixture.

CEC 314.27 (C) – Paddle fan support boxes to be labeled for such use.

150.0(k)Outdoor lighting must be high-efficacy AND have motion sensor plus photocell or astronomical time clock AND a manual On/Off switch that does not override the automatic controls.

Roof

CRC R303.5.1 – Air intake minimum 10’ from mechanical or plumbing vents, chimneys, parking lots, loading docks, alleys, or streets or air intake to be at least 3’ below vent outlet. (Exhaust vents from bathrooms and kitchens are exempt.)

CRC R308.6.8 - Skylights installed in a roof with a pitch flatter than 3:12 (25-percent slope) shall be mounted on a curb extending at least 4” above the plane of the roof unless otherwise specified in the manufacturer’s installation instruction. 

CRC R801.3 – Roof drainage to discharge at least 5’ from foundation in areas with expansive or collapsible soils.

CRC R802.3 – Roof hips and valley rafters less than 3:12 shall be designed as beams.

CRC R802.3.1 - Minimum size rafter tie is 2X4.

CRC R802.3.1 – Minimum size collar tie is 1X4 at 4’ oc.  Collar ties or ridge straps (1.25”X20 gage) required.

CRC R802.5.1 – Purlins to be same size as rafter or larger.  Supported by 2X4 braces to bearing walls, not more than 4’ oc and unbraced length of brace is 8’ maximum and not less than 45 degrees from horizontal.

CRC R 802.7.1 – Notching roof structural members: Notching limited to 1/6 the depth of the member, not longer than 1/3 the depth of the member, not in the middle 1/3 of the member, at ends not more than 1/4 the depth of the member.  If 4” or greater in thickness, then no notching on tension side (bottom) except at ends.

CRC R 802.7.1 – Drilling structural roof members: Drilled holes limited to 1/3 the depth of the member, not closer than 2” from top or bottom of member or to any other hole or notch in the member.

CRC R802.7.1.1 – Notching cantilevered portion of rafter allowed if there is at least 3.5” remaining and the cantilever is not more than 24”.

CRC R802.7.1.2 – Taper cuts at the ends of ceiling joists shall not exceed 1/4  the depth of the joist.

CRC R802.8.1 – Rafters and ceiling joists larger than 2X12 to be blocked or wood strip nailed across joists/rafters at 8’ oc or less.

CRC R806.1 & R806.2 – Attics and enclosed rafter space (formed when ceiling is applied directly to bottom of rafter) must have cross-ventilation.  Openings to be covered with corrosion resistant screen (1/16” – 1/4” openings) at a rate of 1/150 or 1/300 if 40 – 50% of vents are in the upper 1/3 of the attic (not more than 3’ below the ridge) with the remainder at the eave or cornice.

CRC R806.3 – Insulation shall not block the eave or cornice vents.  1” minimum clearance between insulation and vent opening and between roof sheathing and insulation.

CRC R807.1 – Attic access required if combustible construction AND attic space is more than 30” tall (from bottom of rafter to top of ceiling joist) AND more than 30 square feet in area.

CRC R807.1 – Attic access to be 22”X30” minimum and located in a hallway or other readily accessible location.  Head clearance at opening to be 30” min at some point above the access (measured from the BOTTOM of the ceiling joist). 

CRC R1003.9 – Chimneys (metal, masonry, and factory built) shall terminate at least 2’ above any portion of the building within 10’ but not less than 3’ above the highest point where it passes thru the roof. (See also CMC802.5.4)

CRC R1003.20 – Chimneys require crickets where more than 30” wide at the intersection of the roof sloping into the chimney.

CMC 502.1 – Exhaust vents terminations outdoors shall be covered by screens with not less than ¼” openings and not more than ½” openings. (Except Dryer vents)

150.1(c)2 – Radiant barrier at roof required IF prescriptive approach used and T-24 calcs specify Radiant Barrier at roof. Radiant barrier (foil side) requires air space to be effective, therefore if placed over existing sheathing there must be a 1-inch thick spacer between (per CEC Blueprint issue 112– November 2015)

150.1(c)2 – If radiant barriers are required on the roof by the T-24 calcs, the Gable ends of the attic must also be provided with a radiant barrier.

CRC Table R503.2.1.1(1) footnote b – Minimum length of plywood panel must span 3 or more rafters (i.e. “2 or more spans”).

CRC Table R503.2.1.1(1) footnote c –Minimum width of plywood panel is 24”.

CRC Table R602.3(1) – Item #30, Required nailing: 8d nails @ 6” o.c. on edges and 12” o.c. at intermediate supports (i.e. in the “field”).

CRC Table R602.3(2) – Staples for 1/2" plywood on roof to be 1.75” long, 7/16” crown, 4” o.c. edge, 8” o.c. field, OR 3” edge/6” field depending on thickness gage of staple.

CRC R803.2.1.1 – Plywood exposed on underside to outdoor environment to be Exposure 1 grade.

CRC R803.2.3 – Plywood joints to be staggered

CEC 150.1(c)2 – Radiant barrier at roof required IF prescriptive approach used and T-24 calcs specify Radiant Barrier at roof.  Radiant barrier (foil side) requires air space to be effective, therefore if placed over existing sheathing there must be a 1-inch thick spacer between (per CEC Blueprint issue 112– November 2015).

CEC 150.1(c)2 – If radiant barriers are required on the roof by the T-24 calcs, the Gable ends of the attic must also be provided with a radiant barrier.

CMC Table 802.6.2 – Vent termination height above roof is 12” minimum when the roof slope is 6/12 or less and the vent is more than 8’ from a vertical wall and the vent is not more than 12” in diameter.  Where the vent is less than 8’ from a vertical wall OR more than 12” in diameter, the vent termination is to be at least 2’ above any portion of the building within 10’ horizontally and not less than 2’ above the roof where they pass through.

CRC R902.1.1 – Very High Fire severity zones require Class A (including >50% replacement roofs)

CRC R903.2.1 – Flashings required at roof/wall intersections (No. 26 gage galv steel or equal)

CRC R903.2.2 – Chimney or similar roof penetration of 30” or more in width require a cricket or saddle on the ridge side.

CRC R903.2.3 – Parapet walls require a noncombustible and weatherproof cap

CRC R905.2.5 – Fastener length for asphalt shingles = 3/4” into the roof sheathing or at least as thick as the sheathing material

CRC R905.2.8.5 – Drip edge required on asphalt shingles. Nailed at 12” o.c. maximum with minimum 2” overlap at adjacent segments.  Underlayment under drip edge at eave but over drip edge at gables

CRC R908.1 – Reroofs are NOT required to meet the minimum slope requirements of 1/4:12 as long as there is positive roof drainage

CRC R908.3 – 2 roof coverings maximum, then remove all existing layers of roof coverings

CRC Table R905.1.1(2) – Underlayment to be attached using metal or plastic cap nails or cap staples ONLY IN REGIONS WITH WIND SPEEDS IN EXCESS OF 140 MPH

CRC Table R905.1.1(2) – Roofing materials and minimum slope:

Material Minimum Slope Double Underlayment
Asphalt Shingle 2:12 2:12 – 4:12
Clay and Concrete Tile 2-1/2: 12 2-1/2: 12 – 4/12
Metal Shingle Per Manufacturer’s Specifications Per Manufacturer’s Specifications
Roll Roofing
Slate
Wood Shingle
Wood Shake
Metal Roof Panel
(lapped w/o sealant)
Metal Roof Panel
(lapped with sealant)
Metal Roof Panel
(standing seam)
Modified Bitumen
Thermoset Single-ply
Thermoplastic Single-ply
Sprayed Polyurethane Foam
Liquid-applied roofing
Hot Mop (Built-up)
Built-up Coal-tar

CRC R905.3.7 – Tile roofing on roof pitch of less than 5:12 do not need tiles to be nailed to sheathing IF battens are used.  If equal to 5:12 and greater pitch, then 1 nail per tile is required.

110.10 Solar Ready Mandatory Measure – subdivisions of 10 homes or more. 250 square feet solar roof area, specific orientation required if roof slope >2:12 (110 – 270 degrees from North), No obstructions that would shade the solar zone, connection pathway for electrical or plumbing, electrical service 200 Amp minimum busbar and space for future solar breaker (with label).

STAIRS & RAMPS

CRC R202 – Flight of stairs is from one landing to the next landing.

CRC R 202 – By extension of the definitions, a stairway has 2 or more treads (3 or more risers).

CRC R302.11 #3 – Fireblocking required at wood stair stringers.

CRC R302.7 – ½” gypsum board required on walls and lid in accessible enclosed space under stairs.

CRC 303.7 – Landings and treads of stairway shall be illuminated (1 foot-candle min) with a wall switch at each floor level when there are 6 or more risers.

CRC R303.8 – Exterior stairways to be provided with illumination at the top landing; unless to a basement, then the light is to be at the bottom of the stairway.

CRC R308.4.7 – Glazing adjacent to the bottom stair landing is considered to be a hazardous location when: glazing is less than 36” above the landing, AND within a 60” horizontal arc of 180 degrees from the bottom tread.

CRC R311.3 – Landings depth to be not less than the width of the door served.

CRC R311.3.2 Exception – No landing required on exterior side of door where stairway is 2 or fewer risers ( 1 tread) and door does not swing over stairway.

CRC R311.3.3 – Storm and screen doors may swing over exterior stairs and landings.

CRC R311.4 – Egress stairway or ramp required in levels not at grade.

CRC R311.4 – Maximum travel distance to a stairway or ramp on floors above the second floor is 50’.

CRC R311.7.1 – Minimum stairway width of 36” required above the handrail to the required head clearance.

CRC R311.7.1 – Minimum stairway width at and below handrail is 31.5” if handrail on one side, 27” if handrails on both sides.

CRC R311.7.1 – Maximum handrail projection 4.5” for each side.

CRC R311.7.2 – Minimum headroom 6’-8” from nosing (except at point where head clearance passes through floor opening – reduced head clearance may project horizontally 4.75” from perpendicular line from nosing of step).

CRC R312.7.3Maximum vertical rise 12’-3” between floor levels or landings.

CRC R311.7.5.1 – Maximum riser 7.75”, max variance 3/8”, max slope on riser 30 degrees from vertical.

CRC R311.7.5.1Maximum open riser: 4” sphere cannot pass thru (Except risers 30” or less above grade)

CRC R311.7.5.2 – Minimum tread 10”, max 3/8 variance.

CRC R311.7.5.3 – Nosing required on treads less than 11” when closed risers, nosing to be between ¾” min to 1.25” max, nosing to be radius max 9/16”, beveling of nosing not to exceed ½”, max variance 3/8”.

CRC R311.7.6 – Stair landings minimum 36” in depth (can be shape of a ¼ circle w/min 36” radius).

CRC R311.7.6 Exception – Landing not required at top of interior flight of stairs provided door does not swing over stairs (including enclosed garages).

CRC R311.7.7 – 2% maximum slope on treads and landings.

CRC R311.7.9 – Stairs shall be provided with illumination (see R303.7, R 303.8).

CRC R311.7.10.1 – Spiral stairs shall have min clear width of 26” at and below handrails, 7.5” min tread depth at 12”, all treads identical, rise 9.5” max, 6’-6” min head room.

CRC R311.7.8 – Handrails required on at least 1 side if 4 or more risers.

CRC R311.7.8.1 – Handrail height 34” – 38” measured from nosing to top of rail (except at first step and also at the transition from handrail to guardrail and transition from flight to flight and transition at winders).

CRC R311.7.8.2 – Handrails to be continuous between flights and returned to wall or newel post and be 1.5” from wall.

CRC R311.7.8.2 – Continuous handrail can be interrupted by newel post at turns and at lowest tread.

CRC R311.7.8.3 – Handgrip size limitations:

Type I Type II
Circular Not circular Perimeter Greater than 6.25”
Cross-section Cross-section Perimeter Finger recess on both sides ¾” max from top, min 5/16” deep. Finger grip to be located 7/8” max below widest point, etc.
1.25”- 2” 2.25” 4” - 6.25”

CRC R312.1.1 – Guardrails required at walking surfaces more than 30” above grade or floor and within 36” horizontally of said drop.

CRC R312.1.1 – Insect screening NOT considered a guard.

CRC R312.1.2 – 42” minimum height above walking surface.

CRC R312.1.2 Exceptions – Guard height at stairs is minimum 34”.

CRC R312.1.3 – Openings in guards to be less than 4” (4” sphere shall NOT pass thru) Exceptions: triangular opening at tread/riser intersection = 6”, and along open side of stairs = 4-3/8”.

CRC R312.2.1 – Windows more than 6’ above surface below shall have minimum sill height of 24” OR the opening below 24” cannot allow a 4” sphere to pass (Exception: window fall prevention protection devices).

CBC 1607.8.1 - (200 lb point load) Connection details of guardrail and/or handrail on open side of balconies, decks, landings, and stairs to be adequate to support 50 pounds per lineal foot at a right angle to the top rail, or a concentrated load of 200 lbs, whichever is greater.

CRC Section R312.1.3 - (When cables are used) Open guards shall have balusters or ornamental patterns such that a 4-inch diameter sphere cannot pass through any opening.  Experience and some code interpretation suggests the when using cables the spacing should be 2-1/2” on center with vertical supports at 4’-0” on center due to the deflection of the cables. 

CBC 1607.8.1 - (Support Post at 4’ oc)  4x post shall be spaced at 4’ o.c. (which will result in a 200 lb concentrated load – 50#/ft X 4’ = 200# ) or else the post shall be designed and calculations shall be provided for a 50 lb per linear foot loading.  With an 8’ o.c. spacing of the 4x post, the result is a 400 lb concentrated load.

CEC 210.70(A)2(c) – Stairways with 6 or more risers require light switches at each floor level (and another at the landing level when the landing is an entryway). (Exception for automatic, central or remote-controlled lights).

CEC 240.24(F) – Breakers shall not be located over steps of a stairway.

CRC R311.8.1 – Maximum slope 1:12 or 1:8 where technically infeasible and/or not a required exit.

CRC R311.8.2 & R311.3 – Ramp landings 3’ X 3’ at top and bottom and doors at ramp and change of direction.

CRC R311.8.3 – Handrails required only when slope exceeds 1:12 and only on one side.

CRC R311.8.3.1 – Handrail 34”-38” in height.

STORAGE SHEDS, DETACHED TOOL SHEDS, PLAYHOUSES

CRC R105.2 #1 – If single story and no more than 120 square feet in floor area, then exempt from permit.

CRC R202 If incidental to the dwelling on the same lot, then may be unlimited area.

CRC R302.1 – If exempt from permit, then not required to comply with wall ratings nor overhang limits.

SWIMMING POOLS

SCAQMD Rule 445 – Applicable to portions of Southern California. Wood burning fireplaces NOT permitted in new construction (except if above 3,000 in elevation or no infrastructure for natural gas service within 150’ of property). Rule applies to all permanently installed indoor and outdoor wood burning fireplaces or fire pits.

CRC R308.4.5 – Glazing within 60” horizontally of swimming pool or spa water’s edge AND less than 60” above the walking surface required to be safety glass (i.e. tempered).  Applies to all panes of a multi-pane window.

CPC 1210.1.1 – Gas pipe burial depth is 12” minimum for steel (18” for PE plastic pipe per IAPMO IS12-2006) unless located where damage from external sources is likely, whereas it is 18” minimum.  Where 12” cannot be provided, the gas pipe is to be installed in a conduit or shielded (such as a nominal 4” thick concrete slab extending 6” beyond the pipe).

CPC 1210.1.7.2 – Plastic gas piping requires a corrosion resistant tracer wire to be minimum #14 AWG and continuous, extending above the riser at one end.

CEC 680.8 – Vertical clearance above a swimming pool to service drop conductors is 22.5’

CEC 680.10 – Underground wiring not allowed within 5’ of pool edge unless part of pool electrical wiring OR if there is insufficient space to re-route, then must be in conduit (Rigid, Intermediate, Nonmetallic)

CEC 680.10 – Burial depth for underground conduit for pools/spas is 18” for non-metallic conduit OR 6” burial depth minimum IF 4” thick concrete cover with NO vehicle traffic and concrete extends 6” beyond the conduit.

CEC 680.12 – Disconnect to be within sight of equipment, readily accessible and NOT closer than 5’ to inside wall of pool unless separated by a wall which makes the reach path 5’ min.

CEC 680.21(C) – GFCI protection required for 120 or 240 volt / 15 and 20 amp circuits for pool motor equipment.

CEC 680.22(A)(1) – Dwelling to have at least (1) general purpose receptacle outlet between 6’ to 20’ from water’s edge (not more than 6’-6” above grade or floor).

CEC 680.22(A)(2) – Receptacle outlets for pump motors to be located at least 10’ from pool water’s edge (exception for 6’ if single receptacle of grounding type and GFCI protected).

CEC 680.22(A)(3) & 680.22(D) – Receptacle outlets OTHER THAN for the pumps shall be at least 6’ from water’s edge.

CEC 680.22(A)(4) – GFCI protection required for all 125 volt / 15 and 20 amp receptacles within 20’ of inside wall of pool.

CEC 680.22(B)(1) – Lights NOT allowed within 5’ horizontally of the inside wall of the pool unless 12’ above the high water line.

CEC 680.22(B)(4) – Lighting between 5’ to 10’ from inside wall of pool to be protected by GFCI, UNLESS installed 5’ or more above the high water line and rigidly secured a structure or enclosure.

CEC 680.22(C) – Switches to be at least 5’ from water’s edge unless separated by a solid fence or wall (with exceptions for special listings, etc).

CEC 680.26(B) - #8 AWG minimum for bonding pool steel

CEC 680.26(B)(2) – Equipotential Bonding.  3’ horizontal pool perimeter (deck) to be bonded at 4 points (minimum) uniformly spaced.  If no reinforcing steel in deck, then #8 wire 18” – 24” from inside pool wall (in concrete or 4” – 6” below grade)

CEC 680.26(B)(7) – All fixed metal parts to be bonded (includes: metal sheathed cables and raceways, metal pipe, metal awnings, metal fences, metal door and window frames, etc.)  EXCEPTION: if more than 5’ horizontally from water or more than 12’ vertically from water or diving platform, etc.

CEC 680.26(C) – Minimum 9 square inch conductive surface shall be in contact with pool water (could be part of pool equipment, metal fittings, etc.)

Health & Safety Code 115920 – 115929 Pool Fence and Gate regulations (Swimming Pool Safety Act):

-Applicable to pools and spas over 18” deep

MINIMUM REQUIREMENT IS THAT AT LEAST (1) OF THE FOLLOWING (A – F) IS PROVIDED:

(A)   Enclosure (i.e. fence) to be minimum 60” tall

-Any access gates to swing out (away from pool) and have self-latching and self-closing device placed at least 60” above ground (NOTE: Self-latching device height conflicts with 54” height in CBC 1010.1.9.2 Exception and CBC 3109.4.1.7)

-Vertical clearance from bottom of fence to ground is 2” maximum

- Gaps or voids in fence not to allow the passage of a 4” diameter sphere

- Outside surface of fence to be free of handholds or footholds that would allow a child under 5 years old to climb.

(B)   Exit alarms mounted no less than 54” above the floor on doors providing access to the pool.

(C)   Self-closing/self-latching devices with release mechanisms mounted no less than 54” above the floor on doors providing access to the pool.

(D)  Removable mesh fence with self-closing and self-latching gate with key lockable device.

(E)   Approved pool safety cover (ASTM1346)

(F)   Swimming pool alarm which goes off when a body enters the water.

Local ordinances and interpretations will supersede the State regulations.

Health & Safety Code 115928 – Anti-entrapment regulations:

  1. Special grates on drains less than 12” across
  2. At least (2) circulation drains per pump plumbed thru a “T” fitting with drains at least 3’ apart

110.4(a)1 – On-off switch required outside of heater and to be readily accessible.

110.4(b)1 – At least 36” of pipe shall be installed between the filter and the heater OR suction and return lines OR built-in connections for future solar heating equipment.

110.4(b)2 – Pool cover required if pool heater provided

110.4(b)3 – Programmable time switch or similar control required for water circulation motors

150(p)1(C) – Filtration pumps shall be sized (or programmed) so that the flow rate is NOT greater than the rate necessary to turn over the pool water volume in 6 hours or 36 gpm, whichever is greater.

150(p)1(D) – Pump motors used for filtration with a capacity of 1 horsepower or more shall be multi-speed.

150(p)2(A) – A length of straight pipe that is greater than or equal to 4 pipe diameters shall be installed before the pump.

TOILET ROOM (AKA: POWDER ROOM) (see BATHROOM)

UNDERFLOOR SPACE

CRC R317.1 – Wood to earth separation: to bottom of girders in crawl space = 12”, to bottom of joists in crawl space = 18”.

CRC R408.1 – Ventilation of underfloor spaces to be (1:150) 1 square foot for each 150 square feet of underfloor area (or 1:1500 if ground covered by a Class 1 vapor retarder material). One vent required to be within 3’ of each corner of the building.  Vent openings to be covered with a material that does not exceed ¼” maximum opening (i.e. heavy wire mesh screen).

CRC R408.4 – Access to underfloor space shall be either through the perimeter wall (16” X 24” minimum) or through the floor (18” X 24” minimum).

CRC R408.6 – Finish grade of under floor surface permitted to be located at the bottom of the footing.

CRC R408.6 – Finish grade of under floor surface permitted to be located at the bottom of the footing.

CEC 210.8(A)(4) – If receptacle outlets are installed in crawl spaces at or below grade, then GFCI protected receptacles are required.

CEC 210.70(A)(3) – At least (1) lighting outlet controlled by a switch required when there is storage or equipment requiring servicing in the underfloor space.

CPC 609.11 – All hot water pipes regardless of pipe size to be insulated with wall thickness of insulation equal to the pipe diameter up to 2”.

CPC 707.9Underfloor cleanouts must to within 5’ of underfloor access opening.

150.0(j)2) – R4 (1”) pipe insulation required on all HOT water pipes ¾” or larger to point of use and all HOT water pipes (regardless of size) to kitchen fixtures.  Also first 5’ of hot and cold water pipes at the water heater. Pipe insulation NOT required at framing penetrations.  Pipe in insulated wall cavity is acceptable ONLY if Quality Insulation Installation (QII) standards (HERS verification) are met.  Pipe in attic is exempt IF buried by at least 4” blown insulation.  Pipe Insulation to be 4” min from water heater flue.  Hot and cold water lines should be at least 2” apart (to allow 1” insulation on each pipe).  CPC 609.11 more restrictive – all hot water pipes regardless of pipe size to be insulated with wall thickness of insulation equal to the pipe diameter up to 2”.

UTILITY ROOM (see MUD ROOM)

LEGISLATIVE REVIEW

For a list of legislative actions which may have an impact on local building departments, visit the CALBO Legislative Watch page.