CODES

ADOPTS WITH AMENDMENTS:

International Building Code 2018 (IBC 2018)

Heads up: There are no suggested sections in this chapter.
Heads up: There are no amended sections in this chapter.

Chapter 12 Interior Environment

AMENDMENT
This section has been amended at the state or city level.
CALIFORNIA BUILDING CODE — MATRIX ADOPTION TABLE CHAPTER 12 — INTERIOR ENVIRONMENT

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)
Adopting agency BSC BSC-CG SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5
Adopt entire chapter X X
Adopt entire chapter as
amended (amended
sections listed below)
X X X X X X X X X
Adopt only those sections
that are listed below
X X X X X X
Chapter / Section
1202.1 X X
1202.2.1 X X
1202.3 X X
Table 1202.3 X X
1202.4.1.3 X
1202.5 X X
1202.5.2.1 X X
1202.6 X
1203.1, Exceptions 2 & 4 X X
1203.1, Exception 3 X X X X X X
1203.4.1.1 X
1203.4.2 X
1204.1 X X
1204.6 X
1204.7 X
1204.7.1 X
1205 X
1206.3, Exception X X
1206.4 X X
1206.5 X
1207.1 X
1207.2 X X X X X X
1207.4 X
1208 X
1208.1.1 X
1209.2 X X X X X X
1210-1210.6 X X
1211 X
Table 1224.4.6.5 X X X X X X
1224 X X
1225 X
1226 X
1227 X
1228 X
1230 X
1231 X
1235 X
1236 X
1237 X
1240 X
1241 X
1242 X
1243 X
1250 X
1251 X
1252 X
1253 X
1254 X
The Office of the State Fire Marshal's adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.


User note:
About this chapter: Chapter 12 provides minimum provisions for the interior of buildings—the occupied environment. Ventilation, lighting, and space heating are directly regulated in this chapter and in conjunction with the California Mechanical Code® and the California Energy Code®. Minimum room size and maximum room-to-room sound transmission are set for certain occupancies.


The provisions of this chapter shall govern ventilation, temperature control, lighting, yards and courts, sound transmission, room dimensions, surrounding materials and rodentproofing associated with the interior spaces of buildings.

1202.1 General

AMENDMENT
This section has been amended at the state or city level.

Buildings shall be provided with natural ventilation in accordance with Section 1202.5, or mechanical ventilation in accordance with the International Mechanical CodeCalifornia Mechanical Code.

Where the air infiltration rate in a dwelling unit is less than 5 air changes per hour where tested with a blower door at a pressure 0.2 inch w.c. (50 Pa) in accordance with Section R402.4.1.2 of the International Energy Conservation Code—Residential Provisions, the dwelling unit shall be ventilated by mechanical means in accordance with Section 403 of the International Mechanical Code. Ambulatory care facilities and Group I-2 occupancies shall be ventilated by mechanical means in accordance with Section 407 of the International Mechanical Code.

Roof assemblies shall be ventilated in accordance with this section or shall comply with Section 1202.3.

1202.2.1 Ventilated Attics and Rafter Spaces

AMENDMENT
This section has been amended at the state or city level.

Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof framing members shall have cross ventilation for each separate space by ventilation openings protected against the entrance of rain and snow. Blocking and bridging shall be arranged so as not to interfere with the movement of air. An airspace of not less than 1 inch (25 mm) shall be provided between the insulation and the roof sheathing. The net free ventilating area shall be not less than 1/150 of the area of the space ventilated. Ventilators shall be installed in accordance with manufacturer's installation instructions.


Exception: The net free cross-ventilation area shall be permitted to be reduced to 1/300 provided both of the following conditions are met:

  1. In Climate Zones 6, 7 and 814 and 16, a Class I or II vapor retarder is installed on the warm-in-winter side of the ceiling.
  2. At least 40 percent and not more than 50 percent of the required venting area is provided by ventilators located in the upper portion of the attic or rafter space. Upper ventilators shall be located not more than 3 feet (914 mm) below the ridge or highest point of the space, measured vertically, with the balance of the ventilation provided by eave or cornice vents. Where the location of wall or roof framing members conflicts with the installation of upper ventilators, installation more than 3 feet (914 mm) below the ridge or highest point of the space shall be permitted.

1202.2.2 Openings Into Attic

AMENDMENT
This section has been amended at the state or city level.
Exterior openings into the attic space of any building intended for human occupancy shall be protected to prevent the entry of birds, squirrels, rodents, snakes and other similar creatures. Openings for ventilation having a least dimension of not less than 1/16 inch (1.6 mm) and not more than 1/4 inch (6.4 mm) shall be permitted. Openings for ventilation having a least dimension larger than 1/4 inch (6.4 mm) shall be provided with corrosion-resistant wire cloth screening, hardware cloth, perforated vinyl or similar material with openings having a least dimension of not less than 1/16 inch (1.6 mm) and not more than 1/4 inch (6.4 mm). Where combustion air is obtained from an attic area, it shall be in accordance with Chapter 7 of the International Mechanical CodeCalifornia Mechanical Code.

1202.3 Unvented Attic and Unvented Enclosed Rafter Assemblies

AMENDMENT
This section has been amended at the state or city level.

Unvented attics and unvented enclosed roof framing assemblies created by ceilings applied directly to the underside of the roof framing members/rafters and the structural roof sheathing at the top of the roof framing members shall be permitted where all of the following conditions are met:

  1. The unvented attic space is completely within the building thermal envelope.
  2. No interior Class I vapor retarders are installed on the ceiling side (attic floor) of the unvented attic assembly or on the ceiling side of the unvented enclosed roof framing assembly.
  3. Where wood shingles or shakes are used, not less than a 1/4-inch (6.4 mm) vented airspace separates the shingles or shakes and the roofing underlayment above the structural sheathing.
  4. In Climate Zones 5, 6, 714 and 816, any air-impermeable insulation shall be a Class II vapor retarder or shall have a Class II vapor retarder coating or covering in direct contact with the underside of the insulation.

    See the California Energy Code, Figure 100.1-A — California Climate Zones.
    1. 4.1. [HCD 1 & HCD 2] In Climate Zones 14 and 16, a Class I or Class II vapor retarder shall be installed on the indirectly conditioned space side of all insulation in an unvented attic with air-permeable insulation, for condensation control.
  5. Insulation shall be located in accordance with the following:

    1. 5.1. Item 5.1.1, 5.1.2, 5.1.3 or 5.1.4 shall be met, depending on the air permeability of the insulation directly under the structural roof sheathing. No insulation shall be required when roof tiles, wood shingles or wood shakes, or any other roofing system using battens and no continuous underlayment is installed. A continuous underlayment shall be considered to exist if sheathing, roofing paper or any continuous layer having a perm rate of no more than one perm under the dry cup method is present.

      1. 5.1.1. Where only air-impermeable insulation is provided, it shall be applied in direct contact with the underside of the structural roof sheathing.
      2. 5.1.2. Where air-permeable insulation is provided inside the building thermal envelope, it shall be installed in accordance with Item 5.1.1. In addition to the air-permeable insulation installed directly below the structural sheathing, rigid board or sheet insulation shall be installed directly above the structural roof sheathing in accordance with the R-values in Table 1202.3 for condensation control.
      3. 5.1.3. Where both air-impermeable and air-permeable insulation are provided, the air-impermeable insulation shall be applied in direct contact with the underside of the structural roof sheathing in accordance with Item 5.1.1 and shall be in accordance with the R-values in Table 1202.3 for condensation control. The air-permeable insulation shall be installed directly under the air-impermeable insulation.
      4. 5.1.4. Alternatively, sufficient rigid board or sheet insulation shall be installed directly above the structural roof sheathing to maintain the monthly average temperature of the underside of the structural roof sheathing above 45°F (7°C). For calculation purposes, an interior air temperature of 68°F (20°C) is assumed and the exterior air temperature is assumed to be the monthly average outside air temperature of the three coldest months.
    2. 5.2. Where preformed insulation board is used as the air-impermeable insulation layer, it shall be sealed at the perimeter of each individual sheet interior surface to form a continuous layer.

Exceptions:

  1. Section 1202.3 does not apply to special use structures or enclosures such as swimming pool enclosures, data processing centers, hospitals or art galleries.
  2. Section 1202.3 does not apply to enclosures in Climate Zones 5 through 814 and 16 that are humidified beyond 35 percent during the three coldest months.
TABLE 1202.3
INSULATION FOR CONDENSATION CONTROL
CLIMATE ZONEMINIMUM R-VALUE OF AIR-IMPERMEABLE INSULATIONa
2B and 3B6-15 tile roof only0 (none required)
1, 2A, 2B, 3A, 3B, 3C3-15R-5
4C1 & 2R-10
4A, 4B16R-15
5R-20
6R-25
7R-30
8R-35
  1. Contributes to, but does not supersede, thermal resistance requirements for attic and roof assemblies in Section C402.2.1 of the International Energy Conservation Codethe California Energy Code.
The space between the bottom of the floor joists and the earth under any building except spaces occupied by basements or cellars shall be provided with ventilation in accordance with Section 1202.4.1, 1202.4.2 or 1202.4.3.

Ventilation openings through foundation walls shall be provided. The openings shall be placed so as to provide cross ventilation of the under-floor space. The net area of ventilation openings shall be in accordance with Section 1202.4.1.1 or 1202.4.1.2. Ventilation openings shall be covered for their height and width with any of the following materials, provided that the least dimension of the covering shall be not greater than 1/4 inch (6.4 mm):

  1. Perforated sheet metal plates not less than 0.070 inch (1.8 mm) thick.
  2. Expanded sheet metal plates not less than 0.047 inch (1.2 mm) thick.
  3. Cast-iron grilles or gratings.
  4. Extruded load-bearing vents.
  5. Hardware cloth of 0.035-inch (0.89 mm) wire or heavier.
  6. Corrosion-resistant wire mesh, with the least dimension not greater than 1/8 inch (3.2 mm).
  7. Operable louvres, where ventilation is provided in accordance with Section 1202.4.1.2.
The net area of ventilation openings for crawl spaces with uncovered earth floors shall be not less than 1 square foot for each 150 square feet (0.67 m2 for each 100 m2) of crawl space area.
The net area of ventilation openings for crawl spaces with the ground surface covered with a Class I vapor retarder shall be not less than 1 square foot for each 1,500 square feet (0.67 m2 for each 1000 m2) of crawl space area.

1202.4.1.3

AMENDMENT
This section has been amended at the state or city level.
[SPCB] Openings for under-floor ventilation shall be not less than 1 1/2 square feet (0.135 m2) for each 25 linear feet (7620 linear mm) of exterior wall. They shall be covered with corrosion-resistant wire mesh with mesh openings not less than 1/4 inch (6.4 mm) nor more than 1/2 inch (13 mm) in any dimension.
In extremely cold climates, where a ventilation opening will cause a detrimental loss of energy, ventilation openings to the interior of the structure shall be provided.
Mechanical ventilation shall be provided to crawl spaces where the ground surface is covered with a Class I vapor retarder. Ventilation shall be in accordance with Section 1202.4.3.1 or 1202.4.3.2.
Continuously operated mechanical ventilation shall be provided at a rate of 1.0 cubic foot per minute (cfm) for each 50 square feet (1.02 L/s for each 10 m2) of crawl space ground surface area and the ground surface shall be covered with a Class I vapor retarder.

1202.4.3.2 Conditioned Space

AMENDMENT
This section has been amended at the state or city level.
The crawl space shall be conditioned in accordance with the International Mechanical CodeCalifornia Mechanical Code and the walls of the crawl space shall be insulated in accordance with the International Energy Conservation CodeCalifornia Energy Conservation Code.
For buildings in flood hazard areas as established in Section 1612.3, the openings for under-floor ventilation shall be deemed as meeting the flood opening requirements of ASCE 24 provided that the ventilation openings are designed and installed in accordance with ASCE 24.

1202.5 Natural Ventilation

AMENDMENT
This section has been amended at the state or city level.
Natural ventilation of an occupied space shall be through windows, doors, louvers or other openings to the outdoors. The operating mechanism for such openings shall be provided with ready access so that the openings are readily controllable by the building occupants.

[HCD 1] In employee housing, all openable windows in rooms used for living, dining, cooking or sleeping purposes, and toilet and bath buildings, shall be provided and maintained with insect screening.

[HCD 1] Door openings of rooms used for dining, cooking, toilet and bathing facilities in employee housing shall be provided and maintained with insect screening or with solid doors equipped with self-closing devices in lieu thereof, when approved by the enforcement agency.

[HCD 1] The windows, doors, louvers or other approved closeable openings not required by Section 1030 may open into a passive solar energy collector for ventilation required by this section. The area of ventilation openings to the outside of the passive solar energy collector shall be increased to compensate for the openings required by the interior space.
The openable area of the openings to the outdoors shall be not less than 4 percent of the floor area being ventilated.

Where rooms and spaces without openings to the outdoors are ventilated through an adjoining room, the opening to the adjoining room shall be unobstructed and shall have an area of not less than 8 percent of the floor area of the interior room or space, but not less than 25 square feet (2.3 m2). The openable area of the openings to the outdoors shall be based on the total floor area being ventilated.

Exception: Exterior openings required for ventilation shall be allowed to open into a sunroom with thermal isolation or a patio cover provided that the openable area between the sunroom addition or patio cover and the interior room shall have an area of not less than 8 percent of the floor area of the interior room or space, but not less than 20 square feet (1.86 m2). The openable area of the openings to the outdoors shall be based on the total floor area being ventilated.

Where openings below grade provide required natural ventilation, the outside horizontal clear space measured perpendicular to the opening shall be one and one-half times the depth of the opening. The depth of the opening shall be measured from the average adjoining ground level to the bottom of the opening.

1202.5.2 Contaminants Exhausted

AMENDMENT
This section has been amended at the state or city level.
Contaminant sources in naturally ventilated spaces shall be removed in accordance with the International Mechanical CodeCalifornia Mechanical Code and the International Fire CodeCalifornia Fire Code.

1202.5.2.1 Bathrooms

AMENDMENT
This section has been amended at the state or city level.
Rooms containing bathtubs, showers, spas and similar bathing fixtures shall be mechanically ventilated in accordance with the International Mechanical CodeCalifornia Mechanical Code.

     The minimum exhaust rate shall not be less than that established by Table 403.7 "Minimum Exhaust Rates." See California Mechanical Code, Chapter 5, for additional provisions related to environmental air ducts.

[HCD 1] In addition to the requirements in this section and in the California Mechanical Code, bathrooms in Group R occupancies shall be mechanically ventilated in accordance with the California Green Building Standards Code (CALGreen), Chapter 4, Division 4.5.
Where natural ventilation is to be provided by openings onto yards or courts, such yards or courts shall comply with Section 1205.

1202.6 Other Ventilation and Exhaust Systems

AMENDMENT
This section has been amended at the state or city level.
Ventilation and exhaust systems for occupancies and operations involving flammable or combustible hazards or other contaminant sources as covered in the International Mechanical CodeCalifornia Mechanical Code or the International Fire CodeCalifornia Fire Code shall be provided as required by both codes.

1203.1 Equipment and Systems

AMENDMENT
This section has been amended at the state or city level.

Interior spaces intended for human occupancy shall be provided with active or passive space heating systems capable of maintaining an indoor temperature of not less than 68°F (20°C) at a point 3 feet (914 mm) above the floor on the design heating day.


Exceptions:

Space heating systems are not required for:
  1. Interior spaces where the primary purpose of the space is not associated with human comfort.
  2. Group F, H, S or U occupancies.
  1. Space heating systems are not required for:
    1. Interior spaces where the primary purpose of the space is not associated with human comfort.
    2. Group F, H, S or U occupancies.
  2. [HCD 1] For limited-density owner-built rural dwellings, a heating facility or appliance shall be installed in each dwelling subject to the provisions of Subchapter 1, Chapter 1, Title 25, California Code of Regulations, commencing with Section 74; however, there shall be no specified requirement for heating capacity or temperature maintenance. The use of solid-fuel or solar-heating devices shall be deemed as complying with the requirements of this section. If nonrenewable fuel is used in these dwellings, rooms so heated shall meet current installation standards.
  3. [OSHPD 1, 1R, 2, 3, 4 & 5] Space heating systems shall comply with the requirements of the California Mechanical Code.
  4. [HCD 1] When a passive solar energy collector is designed as a conditioned area it shall comply with the California Energy Code. Nonconditioned passive solar energy collectors are exempt from compliance with the California Energy Code.

1204.1 General

AMENDMENT
This section has been amended at the state or city level.
Every space intended for human occupancy shall be provided with natural light by means of exterior glazed openings in accordance with Section 1204.2 or shall be provided with artificial light in accordance with Section 1204.3. Exterior glazed openings shall open directly onto a public way or onto a yard or court in accordance with Section 1205.

[HCD 1] Glazed openings may open into a passive solar energy collector provided the area of exterior glazed openings in the passive solar energy collector is increased to compensate for the area required by the interior space.
The minimum net glazed area shall be not less than 8 percent of the floor area of the room served.

For the purpose of natural lighting, any room is permitted to be considered as a portion of an adjoining room where one-half of the area of the common wall is open and unobstructed and provides an opening of not less than one-tenth of the floor area of the interior room or 25 square feet (2.32 m2), whichever is greater.

Exception: Openings required for natural light shall be permitted to open into a sunroom with thermal isolation or a patio cover where the common wall provides a glazed area of not less than one-tenth of the floor area of the interior room or 20 square feet (1.86 m2), whichever is greater.

Exterior openings required by Section 1204.2 for natural light shall open directly onto a public way, yard or court, as set forth in Section 1205.

Exceptions:

  1. Required exterior openings are permitted to open into a roofed porch where the porch meets all of the following criteria:

    1. 1.1. Abuts a public way, yard or court.
    2. 1.2. Has a ceiling height of not less than 7 feet (2134 mm).
    3. 1.3. Has a longer side at least 65 percent open and unobstructed.
  2. Skylights are not required to open directly onto a public way, yard or court.
Artificial light shall be provided that is adequate to provide an average illumination of 10 footcandles (107 lux) over the area of the room at a height of 30 inches (762 mm) above the floor level.
Stairways within dwelling units and exterior stairways serving a dwelling unit shall have an illumination level on tread runs of not less than 1 footcandle (11 lux). Stairways in other occupancies shall be governed by Chapter 10.

1204.4.1 Controls

AMENDMENT
This section has been amended at the state or city level.
The control for activation of the required stairway lighting shall be in accordance with NFPA 70the California Electrical Code.
The means of egress shall be illuminated in accordance with Section 1008.1.

1204.6 Light Pollution Reduction

AMENDMENT
This section has been amended at the state or city level.
[BSC-CG] See California Green Building Standards Code, Chapter 5, Division 5.1 for additional light pollution reduction requirements.
[BSC] Artificial light shall be provided for parking facilities and primary walkways at California State Universities, colleges and community colleges in accordance with provisions of this subsection. This subsection shall not apply to the University of California unless the Regents of the University of California, by resolution, make it applicable.

1204.7.1 Lighting Requirements

AMENDMENT
This section has been amended at the state or city level.
Based on the recommendations of the most current edition of the Illumination Engineering Society lighting handbook, the following lighting standards shall be used for all new construction of open parking facilities, covered parking facilities and primary walkways:
  1. Open and covered parking facilities.
    1. Medium-level activity usage when medium usage is present.
    2. High-level activity usage when high usage is present.
  2. Primary campus walkways.
    1. Medium-level activity usage when medium usage is present.
    2. High-level activity usage when high usage is present.
This section shall apply to yards and courts adjacent to exterior openings that provide natural light or ventilation. Such yards and courts shall be on the same lot as the building.
Yards shall be not less than 3 feet (914 mm) in width for buildings two stories or less above grade plane. For buildings more than two stories above grade plane, the minimum width of the yard shall be increased at the rate of 1 foot (305 mm) for each additional story. For buildings exceeding 14 stories above grade plane, the required width of the yard shall be computed on the basis of 14 stories above grade plane.
Courts shall be not less than 3 feet (914 mm) in width. Courts having windows opening on opposite sides shall be not less than 6 feet (1829 mm) in width. Courts shall be not less than 10 feet (3048 mm) in length unless bounded on one end by a public way or yard. For buildings more than two stories above grade plane, the court shall be increased 1 foot (305 mm) in width and 2 feet (610 mm) in length for each additional story. For buildings exceeding 14 stories above grade plane, the required dimensions shall be computed on the basis of 14 stories above grade plane.
Access shall be provided to the bottom of courts for cleaning purposes.
Courts more than two stories in height shall be provided with a horizontal air intake at the bottom not less than 10 square feet (0.93 m2) in area and leading to the exterior of the building unless abutting a yard or public way.

1205.3.3 Court Drainage

AMENDMENT
This section has been amended at the state or city level.
The bottom of every court shall be properly graded and drained to a public sewer or other approved disposal system complying with the International Plumbing CodeCalifornia Plumbing Code.
This section shall apply to common interior walls, partitions and floor/ceiling assemblies between adjacent dwelling units and sleeping units or between dwelling units and sleeping units and adjacent public areas such as halls, corridors, stairways or service areas.
Walls, partitions and floor-ceiling assemblies separating dwelling units and sleeping units from each other or from public or service areas shall have a sound transmission class of not less than 50, or not less than 45 if field tested, for airborne noise where tested in accordance with ASTM E90. Alternatively, the sound transmission class of walls, partitions and floor-ceiling assemblies shall be established by engineering analysis based on a comparison of walls, partitions and floor-ceiling assemblies having sound transmission class ratings as determined by the test procedures set forth in ASTM E90. Penetrations or openings in construction assemblies for piping; electrical devices; recessed cabinets; bathtubs; soffits; or heating, ventilating or exhaust ducts shall be sealed, lined, insulated or otherwise treated to maintain the required ratings. This requirement shall not apply to entrance doors; however, such doors shall be tight fitting to the frame and sill.
The sound transmission class of concrete masonry and clay masonry assemblies shall be calculated in accordance with TMS 0302 or determined through testing in accordance with ASTM E90.

1206.3 Structure-Borne Sound

AMENDMENT
This section has been amended at the state or city level.
Floor-ceiling assemblies between dwelling units and sleeping units or between a dwelling unit or sleeping unit and a public or service area within the structure shall have an impact insulation class rating of not less than 50, or not less than 45 if field tested, where tested in accordance with ASTM E492. Alternatively, the impact insulation class of floor-ceiling assemblies shall be established by engineering analysis based on a comparison of floor-ceiling assemblies having impact insulation class ratings as determined by the test procedures in ASTM E492.

Exception: Impact sound insulation is not required for floor-ceiling assemblies over nonhabitable rooms or spaces not designed to be occupied, such as garages, mechanical rooms or storage areas.

1206.4 Allowable Interior Noise Levels

AMENDMENT
This section has been amended at the state or city level.
Interior noise levels attributable to exterior sources shall not exceed 45 dB in any habitable room. The noise metric shall be either the day-night average sound level (Ldn) or the community noise equivalent level (CNEL), consistent with the noise element of the local general plan.

1206.5 Acoustical Control

AMENDMENT
This section has been amended at the state or city level.
[BSC-CG] See California Green Building Standards Code, Chapter 5, Division 5.5 for additional sound transmission requirements.

1207.1 Minimum Room Widths

AMENDMENT
This section has been amended at the state or city level.
Habitable spaces, other than a kitchen, shall be not less than 7 feet (2134 mm) in any plan dimension. Kitchens shall have a clear passageway of not less than 3 feet (914 mm) between counter fronts and appliances or counter fronts and walls.

[HCD 1] For limited-density owner-built rural dwellings, there shall be no requirements for room dimensions, provided there is adequate light and ventilation and adequate means of egress.

1207.2 Minimum Ceiling Heights

AMENDMENT
This section has been amended at the state or city level.

Occupiable spaces, habitable spaces and corridors shall have a ceiling height of not less than 7 feet 6 inches (2286 mm) above the finished floor. Bathrooms, toilet rooms, kitchens, storage rooms and laundry rooms shall have a ceiling height of not less than 7 feet (2134 mm) above the finished floor.


Exceptions:

  1. In one- and two-family dwellings, beams or girders spaced not less than 4 feet (1219 mm) on center shall be permitted to project not more than 6 inches (152 mm) below the required ceiling height.
  2. If any room in a building has a sloped ceiling, the prescribed ceiling height for the room is required in one-half the area thereof. Any portion of the room measuring less than 5 feet (1524 mm) from the finished floor to the ceiling shall not be included in any computation of the minimum area thereof.
  3. The height of mezzanines and spaces below mezzanines shall be in accordance with Section 505.2.
  4. Corridors contained within a dwelling unit or sleeping unit in a Group R occupancy shall have a ceiling height of not less than 7 feet (2134 mm) above the finished floor.
  5. [OSHPD 1, 1R, 2, 3 & 5] Minimum ceiling heights shall comply with Section 1224.4.10.
  6. [OSHPD 4] Minimum ceiling heights shall comply with Section 1227.8.
Any room with a furred ceiling shall be required to have the minimum ceiling height in two-thirds of the area thereof, but in no case shall the height of the furred ceiling be less than 7 feet (2134 mm).

Every dwelling unit shall have not less than one room that shall have not less than 120 square feet (11.2 m2) of net floor area. Other habitable rooms shall have a net floor area of not less than 70 square feet (6.5 m2).

Exception: Kitchens are not required to be of a minimum floor area.

1207.4 Efficiency Dwelling Units

AMENDMENT
This section has been amended at the state or city level.

An efficiency living unit shall conform to the requirements of the code except as modified herein:

[HCD 1] Unless modified by local ordinance pursuant to Health and Safety Code Section 17958.1, efficiency dwelling units shall comply with the following:
  1. The unit shall have a living room of not less than 220 square feet (20.4 m2) of floor area. An additional 100 square feet (9.3 m2) of floor area shall be provided for each occupant of such unit in excess of two.
  2. The unit shall be provided with a separate closet.
  3. The unit shall be provided with a kitchen sink, cooking appliance and refrigeration facilities, each having a clear working space of not less than 30 inches (762 mm) in front. Light and ventilation conforming to this code shall be provided.
  4. The unit shall be provided with a separate bathroom containing a water closet, lavatory and bathtub or shower.
Crawl spaces shall be provided with not less than one access opening that shall be not less than 18 inches by 24 inches (457 mm by 610 mm).

1208.1.1

AMENDMENT
This section has been amended at the state or city level.
[SPCB] Accessible under-floor areas shall be provided with an 18-inch by 24-inch (457 mm by 610 mm) access crawl hole. Pipes, ducts and other nonstructural construction shall not interfere with the accessibility to or within under-floor areas.
An opening not less than 20 inches by 30 inches (559 mm by 762 mm) shall be provided to any attic area having a clear height of over 30 inches (762 mm). Clear headroom of not less than 30 inches (762 mm) shall be provided in the attic space at or above the access opening.

1208.3 Mechanical Appliances

AMENDMENT
This section has been amended at the state or city level.
Access to mechanical appliances installed in under-floor areas, in attic spaces and on roofs or elevated structures shall be in accordance with the International Mechanical CodeCalifornia Mechanical Code.

Section 1209 Toilet and Bathroom Requirements

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[P] 1209.1 Required Fixtures

AMENDMENT
This section has been amended at the state or city level.
The number and type of plumbing fixtures provided in any occupancy shall comply with Chapter 29the California Plumbing Code.

1209.2 Finish Materials

AMENDMENT
This section has been amended at the state or city level.
Walls, floors and partitions in toilet and bathrooms shall comply with Sections 1209.2.1 through 1209.2.4.

[OSHPD 1, 1R, 2, 3 & 5] Facilities subject to OSHPD 1, 1R, 2, 3 & 5 shall also comply with Section 1224.4.11.

[OSHPD 4] Facilities subject to OSHPD 4 shall also comply with Section 1227.9.
In other than dwelling units, toilet, bathing and shower room floor finish materials shall have a smooth, hard, nonabsorbent surface. The intersections of such floors with walls shall have a smooth, hard, nonabsorbent vertical base that extends upward onto the walls not less than 4 inches (102 mm).

Walls and partitions within 2 feet (610 mm) of service sinks, urinals and water closets shall have a smooth, hard, nonabsorbent surface, to a height of not less than 4 feet (1219 mm) above the floor, and except for structural elements, the materials used in such walls shall be of a type that is not adversely affected by moisture.

Exception: This section does not apply to the following buildings and spaces:

  1. Dwelling units and sleeping units.
  2. Toilet rooms that are not accessible to the public and that have not more than one water closet.

Accessories such as grab bars, towel bars, paper dispensers and soap dishes, provided on or within walls, shall be installed and sealed to protect structural elements from moisture.

Shower compartments and walls above bathtubs with installed shower heads shall be finished with a smooth, nonabsorbent surface to a height not less than 72 inches (1829 mm) above the drain inlet.
Built-in tubs with showers shall have waterproof joints between the tub and adjacent wall.
Privacy at water closets and urinals shall be provided in accordance with Sections 1209.3.1 and 1209.3.2.

Each water closet utilized by the public or employees shall occupy a separate compartment with walls or partitions and a door enclosing the fixtures to ensure privacy.

Exceptions:

  1. Water closet compartments shall not be required in a single-occupant toilet room with a lockable door.
  2. Toilet rooms located in child day care facilities and containing two or more water closets shall be permitted to have one water closet without an enclosing compartment.
  3. This provision is not applicable to toilet areas located within Group I-3 occupancy housing areas.

Each urinal utilized by the public or employees shall occupy a separate area with walls or partitions to provide privacy. The walls or partitions shall begin at a height not more than 12 inches (305 mm) from and extend not less than 60 inches (1524 mm) above the finished floor surface. The walls or partitions shall extend from the wall surface at each side of the urinal not less than 18 inches (457 mm) or to a point not less than 6 inches (152 mm) beyond the outermost front lip of the urinal measured from the finished backwall surface, whichever is greater.

Exceptions:

  1. Urinal partitions shall not be required in a single-occupant or family or assisted-use toilet room with a lockable door.
  2. Toilet rooms located in child day care facilities and containing two or more urinals shall be permitted to have one urinal without partitions.

Section 1210 [HCD 1 & HCD 2] Garage Door Springs

AMENDMENT
This section has been amended at the state or city level.

1210.1 General

AMENDMENT
This section has been amended at the state or city level.
This section shall apply to applications listed in Sections 1.8.2.1.1 and 1.8.2.1.3 regulated by the Department of Housing and Community Development.

1210.1.1 Garage Door Extension Springs

AMENDMENT
This section has been amended at the state or city level.
Every garage door extension spring sold or offered for sale, whether new or as a replacement, or installed in any garage or carport which is accessory to an apartment house, hotel, motel or dwelling shall conform to the following requirements:

     Hard-drawn spring wire shall conform to ASTM A227/A227M-17 or a more current version, and shall be made by the steel processes described therein, conforming to the chemical composition requirements listed and meeting the standards of steel heat as set forth by the ladle analysis. Wire tensile strength and dimension variations shall meet the prescribed properties of established standards.

     Oil-tempered wire shall conform to ASTM A229/A229M-17 or a more current version, and shall be made by the steel processes described therein, conforming to the chemical composition requirements listed and meeting the standards of steel heat as set forth by the ladle analysis. Wire tensile strength and dimension variations shall meet the prescribed properties of established standards.

     Extension springs shall be fabricated from either hard-drawn spring wire or oil-tempered wire as specified above.

1210.2 Design Standards

AMENDMENT
This section has been amended at the state or city level.
Minimum design standard shall be 9,000 cycles. (One cycle is an action on the door from the fully closed position, to the fully open position, and returned to the fully closed position.)

1210.3 Certification

AMENDMENT
This section has been amended at the state or city level.
Mill certification of wire physical tests and chemical properties shall be kept on file by the spring manufacturer.

     Physical cycling tests shall be performed for each extension spring design and shall be certified by an approved testing agency acceptable to the department and reports kept on file by the spring manufacturer.

1210.4 Restraining Devices

AMENDMENT
This section has been amended at the state or city level.
Each extension spring shall be equipped with an approved device capable of restraining the spring or any part thereof in the event it breaks. Restraining devices shall be physically tested for each extension spring family of products in accordance with ANSI/DASMA 103-2017 or an equivalent standard. Tests shall be certified by an approved testing agency acceptable to the department. Test reports shall be kept on file by the manufacturer responsible for the restraining device.

1210.5 Identification

AMENDMENT
This section has been amended at the state or city level.
Extension springs, or door systems with extension springs, and restraining devices shall be permanently identified as to manufacturer and shall indicate maximum recommended stretch. Both extension springs and restraining devices shall bear information stating that they have been manufactured in accordance with requirements of the California Department of Housing and Community Development.

1210.6 Installation

AMENDMENT
This section has been amended at the state or city level.
Installation of extension springs, restraining devices and hardware shall be in accordance with the door manufacturer's installation instructions. Instructions shall be provided by the door manufacturer and shall specify the approved method of restraint and maximum recommended stretch. Unless otherwise permitted by the door manufacturer's installation instructions, the hardware and extension springs shall be mounted to nominal 2 by 6 framing members, conforming to the applicable provisions of Section 2303.

Section 1211 [HCD 1] Pollutant Control

AMENDMENT
This section has been amended at the state or city level.

1211.1 Finish Material Pollutant Control

AMENDMENT
This section has been amended at the state or city level.
Finish materials, including adhesives, sealants, caulks, paints and coatings, aerosol paints and coatings, carpet systems, carpet cushion, carpet adhesive, resilient flooring systems, and composite wood products shall meet the volatile organic compound (VOC) emission limits in accordance with the California Green Building Standards Code (CALGreen), Chapter 4, Division 4.5.

Section 1212 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1213 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1214 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1215 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1216 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1217 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1218 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1219 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1220 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1221 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1222 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1223 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section 1224 [OSHPD 1 & OSHPD 1R] Hospitals

AMENDMENT
This section has been amended at the state or city level.

1224.1 Scope

AMENDMENT
This section has been amended at the state or city level.
[OSHPD 1] The provisions of this section shall apply to general acute-care hospitals and general acute-care hospitals providing only acute medical rehabilitation center services. The provisions of Section 1225 shall apply to distinct part skilled nursing and intermediate-care services on a general acute-care hospital license provided in a separate unit.

[OSHPD 1R] This section shall apply to buildings removed from acute care service, in compliance with Part 10, California Existing Building Code, Chapter 3A, and remain under OSHPD jurisdiction.

1224.2 Application

AMENDMENT
This section has been amended at the state or city level.
New buildings and additions, alterations or repairs to existing buildings subject to licensure shall comply with applicable provisions of the California Electrical Code, California Mechanical Code, California Plumbing Code, California Energy Code, California Fire Code, California Existing Building Code (Parts 3, 4, 5, 6, 9 and 10 of Title 24) and this section.

Exceptions:
  1. Facilities licensed and in operation prior to the effective date of this section shall not be required to institute corrective alterations or construction to comply with any new requirements imposed thereby or subsequently, except where specifically required or where the enforcing agency determines that a definite hazard to health and safety exists. Facilities for which preliminary drawings have been submitted to the enforcing agency prior to the effective date of this change shall not be required to comply with such new requirements, provided working drawings are submitted within one year of the effective date of such new requirements.
  2. A change in function shall require compliance with all the functional requirements for new construction in this code, including requirements in Sections 1224, 1225, 1226, 1227 and 1228.
  3. The provisions of this section do not prohibit the use of alternate space utilization, new concepts of design, treatment techniques, equipment and alternate finish materials provided the intent of this section is accommodated and written approval for such alternative is granted by the enforcing agency. Written substantiating evidence in support of the alternate and a written request for consideration shall be submitted to the enforcing agency.
  4. Nothing in this section shall prohibit the provisions of required services from a centralized service facility serving two or more licensed facilities when approved in writing by the licensing agency. Buildings and required spaces for services provided in a separate centralized services facility shall comply with all applicable provisions of these regulations and applicable local codes and ordinances for the services so provided.
  5. Acute psychiatric hospitals and general acute-care hospitals providing only acute medical rehabilitation center services may provide for surgical and anesthesia services to be provided by an outside licensed facility when approved by the licensing agency.
  6. When the Corrections Standards Authority, the Department of Corrections or the Department of Youth Authority determines that a particular requirement for hospitals located in a correctional facility may compromise the safety, security or protection of staff, inmates or property, the enforcement agency shall consider an alternate design.

1224.2.1 Removed From Acute Care Service [OSHPD 1R]

AMENDMENT
This section has been amended at the state or city level.
Hospital buildings removed from acute care service in accordance with Part 10, California Existing Building Code, Section 309A may provide outpatient services and other uses. Required Basic or Supplemental Services on the hospital's license may not be provided.

Exceptions:
  1. Duplicative hospital services when permitted by California Department of Public Health.
  2. Skilled Nursing Services may be provided in conformance with Section 1225.
  3. Acute Psychiatric Services may be provided in conformance with Section 1228.

1224.3 Definitions

AMENDMENT
This section has been amended at the state or city level.
Specific terms and definitions are provided to facilitate consistency in the interpretation and application of these requirements. Some of these terms may have a broader definition in other contexts, but the definitions provided here reflect the use of the terms for OSHPD requirements.

AIR CONDITIONING. The process or system by which simultaneously the temperature, humidity, air motion and quality are maintained within required limits.

AIRBORNE INFECTION ISOLATION ROOM. A single-occupancy patient room where environmental factors are controlled in an effort to minimize the transmission of those infectious agents usually spread from person to person by droplet nuclei associated with coughing and inhalation.

AMBULATORY CARE. A defined health care encounter(s) of less than 24 hours in duration that requires direct professional health care support within a specific facility.

AMBULATORY SURGICAL FACILITY. Any surgical facility organized for the purpose of providing procedural, invasive surgical care to patients with the expectation that they will be recovered sufficiently to be discharged in less than a 24-hour period.

ANGIOGRAPHY. The radiographic visualization of blood vessels following introduction of contrast material for purposes of diagnosis.

BASIC SERVICES. Those essential services required for licensure as a hospital, including medical, nursing, surgical, anesthesia, laboratory, radiology, pharmacy, dietary services and support services. See "SUPPLEMENTAL SERVICES."

BIOTERRORISM. The use, or threat of use, of biological agents to intimidate a political entity or population group.

CENTRAL AIR-HANDLING SYSTEMS. Any units requiring ductwork on the supply or inlet side and serving more than one room.

CHANGE IN FUNCTION. A change in function is a change in activity, service or licensed service provided, within the project limits, that does not necessarily change the use, specific use, and/or occupancy. Conversion of a space that results in a change in activity such that the space will be required to satisfy the functional space requirements under a different code sub-section than that of the prior use is considered a change in function.

CLEAR DIMENSION. An unobstructed room dimension exclusive of built-in casework and equipment and available for functional use.

COURT. An open exterior space bounded on three or more sides by the walls of a structure.

ENVIRONMENT OF CARE. Those features in a built health care entity that are created, structured, and maintained to support quality health care.

EXAM ROOM. A room with a bed, stretcher, or examination table and capability for periodic monitoring (e.g., measurement of blood pressure or pulse oximetry) in which procedures that do not require a specialized suite can be performed (e.g., pelvic examination, blood transfusion).

FLOOR AREA, CLEAR. The actual occupied area exclusive of fixed or wall-mounted cabinets, fixed beds and furnishings, built-in shelves, toilet rooms, closets, lockers, wardrobes, alcoves, anterooms or vestibules.

GENERAL ACUTE-CARE HOSPITAL. A hospital, licensed by the California Department of Public Health, having a duly constituted governing body with overall administrative and professional responsibility and an organized medical staff which provides 24-hour inpatient care, including the basic services.

HANDWASHING STATION. An area that provides a handwashing fixture, cleansing agents and means for drying hands. Refer to the California Plumbing Code, Section 210.0 for the definition of handwashing fixture.

HOSPITAL. A general acute-care hospital, including those providing only acute medical rehabilitation center services and acute psychiatric hospitals.

HOUSEKEEPING. Services anywhere within a health care facility that include general cleaning and tidying and the provision and positioning of identified materials, e.g., soaps, towels, etc. (While routine disinfection protocols can be included in such a definition, the definition is not intended to include complex, nonroutine disinfection procedures nor the nonroutine disposition of hazardous materials such as potentially toxic drugs or other chemicals and radioactive wastes.)

LDR. Labor, Delivery, Recovery (an unlicensed patient bed)

LDRP. Labor, Delivery, Recovery, Postpartum (a licensed patient bed)

LICENSING AGENCY. The Department of Public Health, Licensing and Certification.

LOCATION TERMINOLOGY (terms for relationship to an area or room)

ADJACENT. Located next to but not necessarily connected to the identified area or room.

DIRECTLY ACCESSIBLE. Connected to the identified area or room through a doorway or other opening without going through an intervening room or public space.

IMMEDIATELY ACCESSIBLE. Available either in the identified area or room, or directly accessible from a room or area located within the same department or service space.

IN. Located within the identified area or room.

READILY ACCESSIBLE. Located within the same department or service space as the identified area or room, or located in and shared with an adjacent directly accessible unit.

MONOLITHIC. A surface free of fissures, cracks, perforations, and crevices.

MONOLITHIC CEILING. A ceiling constructed with a surface free of fissures, cracks, and crevices. Any penetrations such as lights, diffusers, and access panels shall be sealed or gasketed. Lay-in ceilings are not considered "monolithic."

NURSING UNIT. A designated patient care area of the hospital which is planned, organized, operated and maintained to function as a unit. It includes patient rooms with adequate support facilities, services and personnel providing nursing care and necessary management of patients.

OPERATING ROOM. A room specifically designed for the performance of surgical procedures. (In common understanding, this means most types of surgical procedures, especially those involving the administration of anesthesia, multiple personnel, recovery room access, and a fully controlled environment.)

HYBRID OPERATING ROOM. A room that meets the definition of an operating room and is also equipped to enable diagnostic imaging before, during, and after surgical procedures. Imaging equipment is permanently installed in the room and may include MRI, fixed singleplane and bi-plane tomographic imaging systems, and computed tomographic equipment.

Note: Use of portable imaging technology does not make an operating room a hybrid operating room.

OUTPATIENT SERVICE. An organizational unit of the hospital, which provides nonemergency healthcare services to patients.

PATIENT CARE LOCATIONS

BAY (patient). A space for human occupancy with one hard wall at the headwall and three soft walls (e.g., cubicle curtains or portable privacy screen).

CUBICLE. A space intended for human occupancy that has at least one opening and no door and is enclosed on three sides with full-height or partial-height partitions.

PATIENT CARE STATION. A designated space for a specific patient care function. This term does not imply any structural requirement (e.g., a Post-anesthesia Care Unit (PACU) can have 10 patient care stations of which three are rooms, three are cubicles, and four are bays).

PATIENT ROOM. Licensed patient bed rooms.

PERIOPERATIVE. Patient care and other related supportive activities before, during or after the operative event.

PROTECTIVE ENVIRONMENT. A bedded unit or patient room where severely immunosuppressed patients are cared for.

RESTRICTED AREA. A designated space with limited access eligibility. Such space has one or more of the following attributes: specific signage, physical barriers, security controls and protocols that delineate requirements for monitoring, maintenance, attire, and use. The term is often applied to specialized procedure suites, such as operating rooms and suites, interventional imaging, cardiac catheterization labs, angiography suites, etc.

ROOM. A space enclosed by hard walls and having a door. Where the word "room" or "office" is used, a separate, enclosed space for the one named function is intended. Otherwise, the described area may be a specific space in another room or common area.

SCRUB SINK. A sink used to wash and scrub the hands and arms during the aseptic preparation for surgery, and equipped with a supply spout and controls as required for a handwashing fixture. Refer to the California Plumbing Code Sections 210.0 and 221.0.

SERVICE SINK. A sink located in a housekeeping room and designed for the purpose of cleaning mops and the disposal of waste water.

SERVICE SPACE. Service Space refers to the distinct area of a health facility where a licensed Basic Service or Supplemental Service is provided. The Service Space shall include all the functional area requirements required to deliver the specific Service. Basic Service Spaces are identified in Sections 1224.14 through 1224.27. Supplemental Service Spaces are identified in Sections 1224.28 through 1224.41. Similar distinctions are made between Basic and Supplemental or Optional Services in Section 1225 through Section 1228. Required functional areas may be a portion of a larger space, one or more Patient Care Locations, support areas or separate Rooms as defined in Section 1224.3. See departmental boundary requirements under Section 1224.4.4.7.6.

SUB-ACUTE CARE. A segment within a continuum of levels of care determined by patient acuity, clinical stability, and resource needs.

SUPPLEMENTAL SERVICE. An inpatient or outpatient service which is not required to be provided by law or regulation for licensure. A supplemental service, when provided, must accommodate the provisions of this section.

Note: See "BASIC SERVICES."

SURGICAL SERVICE SPACE. A space that includes the operating room(s) and service areas.

1224.4 General Construction

AMENDMENT
This section has been amended at the state or city level.

1224.4.1 Jurisdiction

AMENDMENT
This section has been amended at the state or city level.

1224.4.1.1 Services/Systems and Utilities

AMENDMENT
This section has been amended at the state or city level.
[OSHPD 1] Services/systems and utilities shall comply with California Existing Building Code Section 307A.

[OSHPD 1R] Services/systems and utilities shall only originate in, or pass through or under structures which are under the jurisdiction of the Office of Statewide Health Planning and Development (OSHPD).

1224.4.1.2 Means of Egress

AMENDMENT
This section has been amended at the state or city level.
[OSHPD 1] Means of egress shall comply with Part 10, California Existing Building Code, Section 308A.

[OSHPD 1R] Means of egress shall only pass through structures that are under the jurisdiction of the Office of Statewide Health Planning and Development (OSHPD).

1224.4.2 Environmental Engineering and Support Service Spaces

AMENDMENT
This section has been amended at the state or city level.
Spaces for dietary, laundry, morgue, ambulanc