Chapter 8 — COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

Section A5.106 — SITE DEVELOPMENT

2025 California Green Building Standards Code (Title 24, Part 11) · 2025 edition · updated 2026-07-25 · California

A5.106.1 Reserved.

A5.106.2 Storm water design. Design storm water runoff rate, quantity and quality in conformance with Section A5.106.3 Low Impact Development (LID) or by local requirements, whichever are stricter.

A5.106.3 Low Impact Development (LID). All newly constructed projects shall mitigate (infiltrate, filter or treat) stormwater runoff from the 85 [th] percentile 24-hour runoff event (for volume-based BMPs) or the runoff produced by a rain event equal to two times the 85 [th] percentile hourly intensity (for flow-based BMPs) through the application of LID strategies. Employ at least two of the following methods or other best management practices to allow rainwater to soak into the ground, evaporate into the air or collect in storage receptacles for irrigation or other beneficial uses. LID strategies include, but are not limited to:

Bioretention (rain gardens)/filtration planters;
Precipitation capture (Cisterns and rain barrels);
Green roofs meeting the structural requirements of the building code;
Roof leader or impervious area disconnection;
Permeable and porous paving;
Vegetative swales and filter strips; tree preservation; and
Tree preservation and tree plantings;
Landscaping soil quality;
Stream buffer; and
Volume retention suitable for previously developed sites.

A5.106.3.1 Implementation. If applicable, coordinate LID projects with the local Regional Water Quality Control Board, which may issue a permit or otherwise require LID.

Note: Further information on design of specific control measures may be found on US EPA’s website, on SWRCB’s website and from local boards that require LID.

A5.106.3.2 Greyfield or infill site. Manage 40 percent of the average annual rainfall on the site’s impervious surfaces through infiltration, reuse or evapotranspiration.

A5.106.4 Reserved.

A5.106.4.1 Reserved.

A5.106.4.2 Reserved.

A5.106.4.3 Changing rooms. For buildings with over 10 tenant-occupants, provide changing/shower facilities for tenant-occupants only in accordance with Table A5.106.4.3 or document arrangements with nearby changing/shower facilities.

Note: Additional information on recommended bicycle accommodations may be obtained from Sacramento Area Bicycle Advocates at https://sacbike.org.

TABLE A5.106.4.3

NUMBER OF TENANT-OCCUPANTS	SHOWER/CHANGING FACILITIES REQUIRED2	2-TIER (12" X 15" X 72") PERSONAL EFFECTS LOCKERS1, 2 REQUIRED
0-10	0	0
11-50	1 unisex shower	2
51-100	1 unisex shower	3
101-200	1 shower stall per gender	4
Over 200	1 shower stall per gender for each 200 additional tenant-occupants	One 2-tier locker for each 50 additional tenant-occupants
1. One 2-tier locker serves two people. Lockers shall be lockable with either padlock or combination lock. 2. Tenant spaces housing more than 10 tenant-occupants within buildings sharing common toilet facilities need not comply; however, such common shower facilities shall accommodate the total number of tenant-occupants served by the toilets and include a minimum of one unisex shower and two 2-tier lockers.

A5.106.5 Reserved.

A5.106.5.1 Designated parking for clean air vehicles. In new projects or additions or alterations that add 10 or more vehicular parking spaces, provide designated parking for any combination of zero-emitting, high-efficiency and carpool/vanpool vehicles as listed in code Sections A5.106.5.1.1 or A5.106.5.1.2.

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APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

A5.106.5.1.1 Tier 1. Provide 35 percent designated parking spaces of the total number of parking spaces, for any combination of zero-emitting, high-efficiency and carpool/vanpool vehicles. Calculation for spaces shall be rounded up to the nearest whole number.

Note: Designated parking for clean air vehicles shall count toward the total parking spaces required by the local enforcing agencies. A5.106.5.1.2 Tier 2. Provide 50 percent designated parking spaces of the total number of parking spaces, for any combination of zero-emitting, high-efficiency and carpool/vanpool vehicles. Calculation for spaces shall be rounded up to the nearest whole number.

Note:** Designated parking for clean air vehicles shall count toward the total parking spaces required by the local enforcing agencies. A5.106.5.1.2 Tier 2. Provide 50 percent designated parking spaces of the total number of parking spaces, for any combination of zero-emitting, high-efficiency and carpool/vanpool vehicles. Calculation for spaces shall be rounded up to the nearest whole number.

Note: Designated parking for clean air vehicles shall count toward the total parking spaces required by the local enforcing agencies. A5.106.5.1.3 Future charging spaces. Future EV charging spaces qualify as designated parking as described in Section A5.106.5.1 Designated parking for clean air vehicles. Note: Future EV charging spaces shall count toward the total parking spaces required by the local enforcing agencies. A5.106.5.1.4 Parking stall marking. Paint, in the paint used for stall striping, the following characters such that the lower edge of the last word aligns with the end of the stall striping and is visible beneath a parked vehicle:

CLEAN AIR/ VANPOOL/EV Note: Vehicles bearing Clean Air Vehicle stickers from expired HOV lane programs may be considered eligible for designated parking spaces. A5.106.5.1.5 Vehicle designations. Building managers may consult with local community Transit Management Associations (TMAs) for methods of designating qualifying vehicles, such as issuing parking stickers. Notes:

Information on qualifying vehicles, car labeling regulations and DMV CAV decals may be obtained from the following sources:

a. California DriveClean.

b. California Air Resources Board.

c. US EPA fuel economy regulations and standards. d. DMV Registration Operations. 2. Purchasing policy and refueling sites for zero-emitting vehicles for state employees use can be found at the Department of General Services.

A5.106.5.2 Reserved.

A5.106.5.3 Electric vehicle (EV) charging. [N] Construction shall comply with Section A5.106.5.3.1 Tier 1 or A5.106.5.3.3 Tier 2, and in accordance with regulations in the California Building Code and the California Electrical Code. A5.106.5.3.1 Tier 1. Comply with Section 5.106.5.3.1 EV capable spaces, Section 5.106.5.3.2 Electric vehicle charging stations and associated Table A5.106.5.3.1, or comply with Section A5.106.5.3.2 Tier 1 Electric vehicle charging stations (EVCS)—power allocation method and associated Table A5.106.5.3.2. Refer to Section 5.106.5.3.2 for the permitted use of Level 2 or Direct Current Fast Charger (DCFC) to create EVCS. Refer to Section 5.106.3.2.1 for the allowed use of DCFC to comply with both EV capable spaces and Level 2 EVSE. Refer to Section 5.106.5.3.3 for the allowed use of Automatic Load Management System (ALMS).

ing stations (EVCS)—power allocation method and associated Table A5.106.5.3.2. Refer to Section 5.106.5.3.2 for the permitted use of Level 2 or Direct Current Fast Charger (DCFC) to create EVCS. Refer to Section 5.106.3.2.1 for the allowed use of DCFC to comply with both EV capable spaces and Level 2 EVSE. Refer to Section 5.106.5.3.3 for the allowed use of Automatic Load Management System (ALMS).

TABLE A5.106.5.3.1—TIER 1 EV CAPABLE SPACES AND EVCS

TOTAL NUMBER OF ACTUAL PARKING SPACES	NUMBER OF REQUIRED EV CAPABLE SPACES	OTHER THAN OFFICE AND RETAIL NUMBER OF REQUIRED EVCS2, 3	OFFICE AND RETAIL NUMBER OF REQUIRED EVCS2, 3
1–9	2	1	2
10–25	5	3	4
26–50	11	6	8
51–75	19	10	14
76–100	26	13	20
101–150	38	19	29
151–200	53	27	40
201 and over	30 percent of actual parking spaces1	50 percent of EV capable spaces1	75 percent of EV capable spaces1
1. Calculation for spaces shall be rounded up to the nearest whole number. 2. Each EVCS shall reduce the number of required EV capable spaces by the same number. 3. At least one Level 2 EVSE shall be provided.

A5.106.5.3.2 Tier 1 Electric vehicle charging stations (EVCS)—power allocation method. The power allocation method may be used as an alternative to the requirements in Section 5.106.5.3.1, Section 5.106.5.3.2, and associated Table A5.106.5.3.1. Use Table A5.106.5.3.2 to determine the total power in kVA required based on the total number of actual parking spaces.

APPENDIX A5-6 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

Power allocation method shall include the following:

Use any kVA combination of EV capable spaces, low power Level 2, Level 2 or DCFC EVSEs.
At least one Level 2 EVSE shall be provided.

TABLE A5.106.5.3.2—TIER 1 EVCS—POWER ALLOCATION METHOD

TOTAL NUMBER OF ACTUAL PARKING SPACES	MINIMUM TOTAL kVA @ 6.6 kVA	OTHER THAN OFFICE AND RETAIL TOTAL kVA REQUIRED IN ANY COMBINATION OF EV CAPABLE3, 4, LOW POWER LEVEL 2 LEVEL 21, 2, OR DCFC	OFFICE AND RETAIL TOTAL kVA REQUIRED IN ANY COMBINATION OF EV CAPABLE3, 4, LOW POWER LEVEL 2 LEVEL 21, 2, OR DCFC
1–9	13.2	13.2	13.2
10–25	33	33	33
26–50	72.6	72.6	72.6
51–75	125.4	125.4	125.4
76–100	171.6	171.6	171.6
101–150	250.8	250.8	250.8
151–200	349.8	349.8	349.8
201 and over	30 percent of actual parking spaces× 6.6	Total required kVA = P× .30× 6.6 Where P = Parking spaces in facility	Total required kVA = P× .30× 6.6 Where P = Parking spaces in facility
1. Level 2 EVSE @ 6.6 kVA minimum. 2. At least one Level 2 EVSE shall be provided. 3. Maximum allowed kVA to be utilized for EV capable spaces is 67 percent. 4. If EV capable spaces are utilized, they shall meet the requirements of Section 5.106.5.3.1 EV capable spaces. 5. For office and retail buildings the maximum allowed kVA to be utilized for EV capable spaces is 25 percent.

A5.106.5.3.3 Tier 2. Comply with Section 5.106.5.3.1 EV capable spaces, Section 5.106.5.3.2 Electric vehicle charging stations and associated Table A5.106.5.3.3, or Section A5.106.5.3.4 Electric vehicle charging stations (EVCS)—power allocation method and associated Table A5.106.5.3.4.

Refer to Section 5.106.5.3.2 for the permitted use of Level 2 or Direct Current Fast Charger (DCFC) to create EVCS. Refer to Section 5.106.3.2.1 for the allowed use of DCFC to comply with both EV capable spaces and Level 2 EVSE. Refer to Section 5.106.5.3.3 for the allowed use of Automatic Load Management System (ALMS).

TABLE A5.106.5.3.3—TIER 2 EV CAPABLE SPACES AND EVCS

TOTAL NUMBER OF ACTUAL PARKING SPACES	NUMBER OF REQUIRED EV CAPABLE SPACES	OTHER THAN OFFICE AND RETAIL NUMBER OF REQUIRED EVCS2, 3	OFFICE AND RETAIL NUMBER OF REQUIRED EVCS2, 3
1–9	3	2	2
10–25	8	4	6
26–50	17	9	13
51–75	28	14	21
76–100	40	20	30
101–150	57	29	43
151–200	79	40	59
201 and over	45 percent of actual parking spaces1	50 percent of EV capable spaces1	75 percent of EV capable spaces1
1. Calculation for spaces shall be rounded up to the nearest whole number. 2. Each EVCS shall reduce the number of required EV capable spaces by the same number. 3. At least one Level 2 EVSE shall be provided.

A5.106.5.3.4 Tier 2 Electric vehicle charging stations (EVCS)—power allocation method. The power allocation method may be used as an alternative to the requirements in Section 5.106.5.3.1, Section 5.106.5.3.2 and associated Table A5.106.5.3.3. Use Table A5.106.5.3.4 to determine the total power in kVA required based on the total number of actual parking spaces.

Power allocation method shall include the following:

Use any kVA combination of EV capable spaces, low power Level 2, Level 2 or DCFC EVSEs.
At least one Level 2 EVSE shall be provided.

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APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

TABLE A5.106.5.3.4—TIER 2 EVCS—POWER ALLOCATION METHOD

TOTAL NUMBER OF ACTUAL PARKING SPACES	MINIMUM TOTAL kVA @ 6.6 kVA	OTHER THAN OFFICE AND RETAIL TOTAL kVA REQUIRED IN ANY COMBINATION OF EV CAPABLE3, 4, LOW POWER LEVEL 2 LEVEL 21, 2, OR DCFC	OFFICE AND RETAIL TOTAL kVA REQUIRED IN ANY COMBINATION OF EV CAPABLE3, 4, LOW POWER LEVEL 2 LEVEL 21, 2, OR DCFC
1–9	19.8	19.8	19.8
10–25	52.8	52.8	52.8
26–50	112.2	112.2	112.2
51–75	184.8	184.8	184.8
76–100	264.0	264	264
101–150	376.2	376.2	376.2
151–200	521.4	521.4	521.4
201 and over	45 percent of actual parking spaces× 6.6	Total required kVA = P× .45× 6.6 Where P = Parking spaces in facility	Total required kVA = P× .45× 6.6 Where P = Parking spaces in facility
1. Level 2 EVSE @ 6.6 kVA minimum. 2. At least one Level 2 EVSE shall be provided. 3. Maximum allowed kVA to be utilized for EV capable spaces is 75 percent. 4. If EV capable spaces are utilized, they shall meet the requirements of Section 5.106.5.3.1 EV capable spaces. 5. For office and retail buildings the maximum allowed kVA to be utilized for EV capable spaces is 25 percent.

A5.106.6 Parking capacity. Design parking capacity to meet but not exceed minimum local zoning requirements.

A5.106.6.1 Reduce parking capacity. With the approval of the enforcement authority, employ strategies to reduce on-site parking area by

Use of on street parking or compact spaces, illustrated on the site plan or
Implementation and documentation of programs that encourage occupants to carpool, ride share or use alternate transportation.

Note: Strategies for programs may be obtained from local TMAs.

A5.106.7 Exterior wall shading. Meet requirements in the current edition of the California Energy Code and comply with either Section A5.106.7.1 or A5.106.7.2 for wall surfaces. If using vegetative shade, plant species documented to reach desired coverage within 5 years of building occupancy.

A5.106.7.1 Fenestration. Provide vegetative or man-made shading devices for all fenestration on east-, south- and west-facing walls.

A5.106.7.1.1 East and west walls. Shading devices shall have 30-percent coverage to a height of 20 feet or to the top of the exterior wall, whichever is less. Calculate shade coverage on the summer solstice at 10 AM for east-facing walls and at 3 PM for west-facing walls.

A5.106.7.1.2 South walls. Shading devices shall have 60-percent coverage to a height of 20 feet or to the top of the exterior wall, whichever is less.

A5.106.7.2 Opaque wall areas. Use wall surfacing with minimum SRI 25 (aged), for 75 percent of opaque wall areas.

Exception: Use of vegetated shade in Wildland-Urban Interface Areas as defined in Chapter 7A (Materials and Construction Methods for Exterior Wildfire Exposure) of the California Building Code shall meet the requirements of that chapter.

Note: If not available from the manufacturer, aged SRI value calculations may be found at the California Energy Commis-sion’s web site at www.energy.ca.gov.

A5.106.8 Reserved.

A5.106.9 Reserved.

A5.106.10 Reserved.

A5.106.11 Reduction of heat island effect. Reduce heat islands by requiring Section A5.106.11.1 Hardscape alternatives, Section A5.106.11.2 Cool roofs, or Section A5.106.11.3 Shade trees.

A5.106.11.1 Hardscape alternatives. Use one or a combination of strategies 1 and 2 for 50 percent of site hardscape or put 50 percent of parking underground.

Use light colored materials with an initial solar reflectance value of at least 0.30 as determined in accordance with American Society for Testing and Materials (ASTM) Standards E1918 or C1549.
Use open-grid pavement system or pervious or permeable pavement system.

APPENDIX A5-8 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

A5.106.11.2 Cool roof. Use roofing materials having a minimum aged solar reflectance and thermal emittance complying with Sections A5.106.11.2.1 and A5.106.11.2.2 or a minimum aged Solar Reflectance Index (SRI) complying with Section A5.106.11.2.3 and as shown in Table A5.106.11.2.2 for Tier 1 or Table A5.106.11.2.3 for Tier 2.

Exceptions:

Roof constructions that have a thermal mass over the roof membrane, including areas of vegetated (green) roofs, weighing at least 25 pounds per square foot.
Roof area covered by building integrated solar photovoltaic and building integrated solar thermal panels.

A5.106.11.2.1 Solar reflectance. Roofing materials shall have a minimum aged solar reflectance equal to or greater than the values specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2.

If Cool Roof Rating Council (CRRC) testing for aged reflectance is not available for any roofing products, the aged value shall be determined using the CRRC certified initial value using the equation ρ aged = [0.2 + ß [ρ initial – 0.2], where ρ initial = the initial solar reflectance and soiling resistance, ß, listed by product type in Table A5.106.11.2.1.

Solar reflectance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, California Administrative Code.

TABLE A5.106.11.2.1—VALUES OF SOILING RESISTANCE, ß, BY PRODUCT TYPE

PRODUCT TYPE	CRRC PRODUCT CATEGORY	ß
Field-applied coating	Field-applied coating	0.65
Other	Not a field-applied coating	0.70

A5.106.11.2.2 Thermal emittance. Roofing materials shall have a CRRC initial or aged thermal emittance as determined in accordance with ASTM E408 or C1371 equal to or greater than those specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2.

Thermal emittance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, California Administrative Code.

TABLE A5.106.11.2.2 [BSC]—TIER 1

ROOF SLOPE	CLIMATE ZONE	MINIMUM AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
≤ 2:12	1–16	0.63	0.75	75
> 2:12	1–16	0.20	0.75	16

A5.106.11.2.3 Solar reflectance index alternative. Solar Reflectance Index (SRI) equal to or greater than the values specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2 may be used as an alternative to compliance with the aged solar reflectance values and thermal emittance.

SRI values used to comply with this section shall be calculated using the Solar Reflectance Index (SRI) Calculation Worksheet (SRI-WS) developed by the California Energy Commission or in compliance with ASTM E1980-11 as specified in the California Energy Code, Section 110.8(i)3. Solar reflectance values used in the SRI-WS shall be based on the aged reflectance value of the roofing product or the equation in section A5.106.11.2.1 if the CRRC certified aged solar reflectance are not available. Certified Thermal emittance used in the SRI-WS may be either the initial value or the aged value listed by the CRRC.

Solar reflectance and thermal emittance may also be certified by other supervisory entities approved by the Commission pursuant to Title 24, Part 1, California Administrative Code.

Note: The Solar Reflectance Index Calculation Worksheet (SRI-WS) is available by contacting the Energy Standard Hotline at 1-800-772-3300, website at www.energy.ca.gov or by email at Title24@ energy.state.ca.us.

TABLE A5.106.11.2.3 [BSC]—TIER 2

ROOF SLOPE	CLIMATE ZONE	MINIMUM AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
≤ 2:12	1–16	0.68	0.85	82
> 2:12	1–16	0.28	0.85	27

A5.106.11.2.4 Verification of compliance. If no documentation is available, an inspection shall be conducted to ensure roofing materials meet cool roof aged solar reflectance and thermal emittance or SRI values.

A5.106.11.3 Shade trees. In the absence of a local shade tree ordinance, comply with mandatory Section 5.106.12 Shade trees.

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APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

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▸ Contents — 2025 California Green Building Standards Code (Title 24, Part 11)

2025 California Green Building Standards Code (Title 24, Part 11)