Chapter 8 — COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

Section A6.505 — [OSHPD 1, 2 & 4]—INDOOR MOISTURE CONTROL

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

A6.505.2 Indoor moisture control. Buildings shall meet or exceed the provisions of California Building Code, CCR, Title 24, Part 2, Sections 1203 and Chapter 14.

APPENDIX A6.1-36 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

NONRESIDENTIAL OCCUPANCIES APPLICATION CHECKLIST [OSHPD 1, 2 and 4]

FEATURE OR MEASURE	COMPLIANCE LEVELS			NOTES
FEATURE OR MEASURE	Mandatory *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*
FEATURE OR MEASURE	Mandatory *CALGreen*	Tier 1	Tier 2	Tier 2
DIVISION A6.1 – PLANNING AND DESIGN
SECTION Site Development	SECTION Site Development	SECTION Site Development	SECTION Site Development	SECTION Site Development
A6.106.9 Building orientation.Locate and orient the building as follows: 1. When site and location permit, orient the building with the long sides facing north and south. 2. Protect the building from thermal loss, drafts and degradation of the building envelope caused by wind and wind-driven materials such as dust.
DIVISION A6.2 – ENERGY EFFICIENCY
SECTION A6.203 Performance Measures	SECTION A6.203 Performance Measures	SECTION A6.203 Performance Measures	SECTION A6.203 Performance Measures	SECTION A6.203 Performance Measures
A6.203.1 Energy performance. [OSHPD 1] A6.203.1.1 CALGreen Tier 1. [OSHPD 1]Buildings must comply with the latest edition of “Savings By Design, Healthcare Modeling Procedures.” A.5.203.1.2 CALGreen Tier 2. [OSHPD 1] Buildings must exceed the latest edition of “Savings By Design, Healthcare Modeling Procedures” by 15 percent.
SECTION A6.204 Prescriptive Measures
A6.204.1 ENERGY STAR equipment and appliances.All equipment and appliances provided by the builder shall be ENERGY STAR labeled if ENERGY STAR is applicable to that equipment or appliance.
A6.204.4 Commissioning. Building commissioning for all building systems covered by T24, Part 6, process systems and renewable energy systems shall be included in the design and construction processes of the building project. Commissioning requirements shall include as a minimum items listed in Section A6.204.4. A6.204.4.1 Owner’s Project Requirements (OPR).Documented before the design phase of the project begins the OPR shall include items listed in Section A6.204.4. A6.204.4.2 Basis of Design (BOD).A written explanation of how the design of the building systems meets the OPR shall be completed at the design phase of the building project and updated periodically to cover the systems listed in Section A6.204.4.2. A6.204.4.3 Commissioning plan.A commissioning plan describing how the project will be commissioned shall be started during the design phase of the building project and shall include as a minimum items listed in Section A6.204.4.3. A6.204.4.4 Functional performance testingshall demonstrate the correct installation and operation of each component, system and system-to-system interface in accordance with the approved plans and specifications. A6.204.4.5 Post construction documentation and training.A systems manual and systems operations training are required. A6.204.4.5.1 Systems manual.The systems manual shall be delivered to the building owner and facilities operator and shall include the items listed in Section A6.204.4.5.1. A6.204.4.5.2 Systems operations training. The training of the appropriate maintenance staff for each equipment type and/or system shall include as a minimum items listed in Section A6.204.4.5.2. A6.204.4.6 Commissioning report.A complete report of commissioning process activities undertaken through the design, construction and postconstruction phases of the building project shall be completed and provided to the owner.
A6.204.6 Building orientation and shading.Locate orient and shade the building as required in Section A6.106.11.
SECTION A6.205 Building Envelope
A6.205.1 Fenestration products and exterior doors. A6.205.1.1 Certification of fenestration products and exterior door other than field- fabricated.
A6.205.1.2 Installation of field-fabricated fenestration and exterior doors.
A6.205.2 Joints and other openings.
A6.205.3 Installation and roofing products.

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APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

NONRESIDENTIAL OCCUPANCIES APPLICATION CHECKLIST [OSHPD 1, 2 and 4] — continued

FEATURE OR MEASURE	COMPLIANCE LEVELS			NOTES
FEATURE OR MEASURE	Mandatory *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*
FEATURE OR MEASURE	Mandatory *CALGreen*	Tier 1	Tier 2	Tier 2
SECTION A6.207 HVAC Design, Equipment and Installation
A6.207.1 Space-conditioning equipment certification by manufacturers. A6.207.1.1 Efficiency. A6.207.1.2 Controls for heat pumps with supplementary electric resistance heaters. A6.207.1.3 Thermostats. A6.207.1.4 Gas-and oil-fired furnace standby loss controls.
A6.207.2 Space conditioning systems. A6.207.2.1 Supply air temperature reset controls. A6.207.2.2 Electric resistance heating. A6.207.2.3 Heat rejection systems. A6.207.2.4 Hydronic system measures. A6.207.2.5 Air distribution system duct leakage sealing. A6.207.2.6 Variable air volume control for single zone systems.
A6.207.3 Service water-heating systems and equipment. A6.207.3.1 Certification by manufacturers. A6.207.3.2 Efficiency. A6.207.3.3 Installation.
A6.207.4 Natural gas central furnaces, cooking equipment and pool and spa heaters. Pilot lights prohibited.
A6.207.5 Controls for space-conditioning systems. A6.207.5.1 Thermostatic controls for each zone. A6.207.5.2 Criteria for zonal thermostatic controls. A6.207.5.3 Heat pump controls. A6.207.5.4 Dampers for air supply and exhaust equipment. A6.207.5.5 Automatic demand shed controls.
A6.207.6 Pipe insulation.
SECTION A6.209 Lighting
A6.209.1 Lighting control devices, ballasts and luminaires. A6.209.1.1 All devices: Instructions and calibration. A6.209.1.2 Indicator lights. A6.209.1.3 Automatic time switch control devices. A6.209.1.4 Occupant sensors, motion sensors and vacancy sensors. A6.209.1.5 Multilevel occupant sensor. A6.209.1.6 Automatic daylighting control devices. A6.209.1.7 Interior Photosensors. A6.209.1.8 Multilevel astronomical time-switch controls. A6.209.1.9 Outdoor astronomical time-switch controls. A6.209.1.10 Dimmers.
A6.209.2 Indoor lighting controls. A6.209.2.1 Area controls. A6.209.2.2 Multilevel lighting controls. A6.209.2.3 Daylight areas. A6.209.2.3.1 Daylight area. A6.209.2.3.1.2 Daylight area, primary sidelit. A6.209.2.3.1.3 Daylight area, secondary sidelit. A6.209.2.3.1.4 Daylight area, skylit. A6.209.2.3.2 Controls for luminaires providing general lighting that are in or are partially in the skylit daylight area and or the primary sidelit daylight area. A6.209.2.4 Shut-off controls.
A6.209.3 Outdoor lighting controls and equipment. A6.209.3.1 Outdoor lighting. A6.209.3.2 Luminaire cutoff requirements. A6.209.3.3 Controls for outdoor lighting.

APPENDIX A6.1-38 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

NONRESIDENTIAL OCCUPANCIES APPLICATION CHECKLIST [OSHPD 1, 2 and 4] — continued

FEATURE OR MEASURE	COMPLIANCE LEVELS			NOTES
FEATURE OR MEASURE	Mandatory *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*
FEATURE OR MEASURE	Mandatory *CALGreen*	Tier 1	Tier 2	Tier 2
A6.209.4 Outdoor lighting. A6.209.4.1 Outdoor lighting power trade-offs. A6.209.4.2 Outdoor lighting power. A6.209.4.3 Calculation of actual lighting power. A6.209.4.4 Calculation of allowed lighting power. A6.209.4.4.1 General hardscape lighting allowance. A6.209.4.4.2 Additional lighting power allowance for specific applications. A6.209.4.4.3 Additional lighting power allowance for local ordinance requirements.
A6.209.5 Signs. A6.209.5.1 Maximum allowed lighting power. A6.209.5.2 Alternate lighting sources.
A6.209.6 Sign lighting controls.
A6.209.7 Nonresidential lighting control acceptance.
SECTION A6.210 Appliances
A6.210.1 Appliances regulated by the appliance efficiency regulations.
DIVISION A6.4 – MATERIAL CONSERVATION AND RESOURCE EFFICIENCY
SECTION A6.407 Water Resistance and Moisture Management
A6.407.3 Weather Protection. A6.407.4.1 Moisture control. A6.407.4.2 Sprinklers. A6.407.4.3 Entries and openings.
SECTION A6.408 Construction Waste Reduction, Disposal and Recycling
A6.408.5 Construction waste diversion.Establish a construction waste management plan or meet local ordinance, whichever is more stringent.
A6.408.6 Construction waste.Recycle and/or salvage for reuse a minimum of 50 percent of nonhazardous construction and demolition debris or meet local ordinance, whichever is more stringent. Exceptions: 1. Excavated soil and land-clearing debris. 2. Alternate waste reduction methods developed by working with local agencies if diversion or recycle facilities capable of compliance with this item do not exist.
A6.408.7 Excavated soil and land clearing debris.100 percent of trees, stumps, rocks and associated vegetation and soils resulting primarily from land clearing shall be reused or recycled.
SECTION A6.410 Building Maintenance and Operation
A6.410.6 Recycling by occupants.Provide readily accessible areas that serve the entire building and are identified for the depositing, storage and collection of nonhazardous materials for recycling.
DIVISION A6.5 – ENVIRONMENTAL QUALITY
SECTION A6.504 Pollutant Control	SECTION A6.504 Pollutant Control	SECTION A6.504 Pollutant Control	SECTION A6.504 Pollutant Control	SECTION A6.504 Pollutant Control
A6.504.4.5.1 No-added formaldehyde.Use composite wood products approved by the California Air Resources Board (ARB) as no-added formaldehyde (NAF) based resins or ultra- low-emitting formaldehyde (ULEF) resins. Notes: 1. See Title 17, Section93120.3(c) and (d), respectively. 2. Documentation must be provided verifying that materials are certified to meet the pollutant emission limits. A list of manufacturers and theirNAF and ULEF certified materials is provided at http://www.arb.ca.gov/toxics/compwood/naf_ulef/listofnaf_ulef.htm. A6.504.8 Finish material pollutant control.Finish materials shall comply with Sections A6.504.8.1 through A6.504.8.4. A6.504.8.1 Adhesives, sealants and caulks. Adhesives, sealants and caulks used on the project shall meet the requirements of the following standards. 1. Adhesives, adhesive bonding primers and adhesive primers, sealants and sealant primers shall comply with Table A6.504.8.1. 2. Aerosol adhesives shall meet the requirements of_California Code of Regulations,_ Title 17, commencing with Section 94507, http://ccr.oal.ca.gov/.

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APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

NONRESIDENTIAL OCCUPANCIES APPLICATION CHECKLIST [OSHPD 1, 2 and 4] — continued

FEATURE OR MEASURE	COMPLIANCE LEVELS			NOTES
FEATURE OR MEASURE	Mandatory *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*	VOLUNTARY *CALGreen*
FEATURE OR MEASURE	Mandatory *CALGreen*	Tier 1	Tier 2	Tier 2
A6.504.8.3 Paints and coatings.Architectural paints and coatings shall comply with Table A6.504.8.3. A6.504.8.3.2 Verification. A6.504.8.4 Carpet systems.All carpet installed in the building interior shall meet the testing and product requirements of one of the standards listed in Section A6.504.8.3. A6.504.8.4.1 Carpet cushion.All carpet cushion installed in the building interior shall meet the requirements of the Carpet and Rug Institute Green Label program. A6.504.8.4.2 Carpet adhesive.All carpet adhesive shall meet the requirements of Table A6.504.8.1. A6.504.8.5 Composite wood products.Hardwood plywood, particleboard and medium density fiberboard composite wood products used on the interior or exterior of the building shall meet the requirements for formaldehyde as specified in Table A6.504.8. A6.504.8.5.2 Documentation.Verification of compliance with this section shall be provided as requested by the enforcing agency. Documentation shall include at least one of the following. 1. Product certifications and specifications 2. Chain of custody certifications 3. Other methods acceptable to the enforcing agency
A6.504.4.9 Acoustical ceilings and wall panels.Comply with Chapter 8 in Title 24, Part 2 and with the VOC-emission limits defined in the CHPS Low-emitting Materials List.
A6.504.5 Hazardous particulates and chemical pollutants.Minimize and control pollutant entry into buildings and cross-contamination of regularly occupied areas. A6.504.5.1 Entryway systems.Install permanent entryway systems measuring at least six feet in the primary direction of travel to capture dirt and particulates at entryways directly connected to the outdoors as listed in Items 1 through 3 in Section A6.504.5.1.
A6.504.9 Environmental tobacco smoke (ETS) control.Prohibit smoking within 25 feet of building entries, outdoor air intakes and operable windows and in buildings; or as enforced by ordinances, regulations or policies of any city, county, city and county, California Community College, campus of the California State University or campus of the University of California, whichever are more stringent.
SECTION A6.505 Indoor Moisture Control
A6.505.2 Indoor moisture control.Buildings shall meet or exceed the provisions of California Building Code, CCR, Title 24, Part 2, Section 1203 and Chapter 14.
SECTION A6.507 Environmental Comfort Reserved

APPENDIX A6.1-40 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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Moisture content of building materials 4.505.3

Indoor Water Use – see Water Use, Indoor Innovative Concepts And Local Environmental Conditions A4.107, A4.108, A4.306, A4.411, A4.509 Installer and Special Inspector Qualifications Chapter 7

Life Cycle Assessment 5.409, A5.409 Materials and system assemblies A5.409.3

Product GWP compliance—prescriptive path 5.409.3, (WS-5), (WS-8), A5.409.3, Table 5.409.3, Table

A5.409.3 Whole building life cycle assessment 5.409.2, (WS-4), (WS7), (WS-9), A5.409.2 of additional impacts A5.409.4 Lighting Appendix A6.1(OSHPD) A5.209.1

Maintenance, Reduced and Enhanced Durability 4.406, A4.406, A5.406

Material Sources A4.405, A5.405 Bio-based materials (from renewable sources) A4.405.4, A5.405.2 Cement and concrete A5.405.5 Certified wood components A5.405.2.1 Concrete floors A4.405.2 Prefinished building materials A4.405.1 Recycled content A4.405.3, A5.405.4 Regional Materials A5.405.1 Reused materials A5.405.3

Model Water-Efficient Landscape Ordinance (MWELO) 4.304.1 Moisture Control, Indoor – see Indoor Moisture Control

Nonresidential Additions

and Alterations 301.3

Outdoor Air Quality 5.508, A5.508 Ozone depletion and greenhouse gas reductions 5.508.1, A5.508.1.3,

A5.508.1.4

Outdoor Water Use – see Water Use, Outdoor

Pollutant Control 4.504, 5.504, A4.504,

A5.504 Acoustical ceilings and wall panels 5.504.4.8

Adhesives, sealants and caulks Tables 4.504.1 & 4.504.2, 4.504.2.1, 5.504.4.1, Tables 5.504.4.1 & 5.504.4.2, Appendix A6.1 (OSHPD) Tables A5.504.8.1 & A5.504.8.2 Aerosol paints and coatings 4.504.2.3, 5.504.4.3.1, Appendix A6.1 (OSHPD), A5.504.8.3.1

Carpet systems 4.504.3, 5.504.4.4, Appendix A6.1 (OSHPD), A5.504.8.4 Composite wood products 4.504.5, Table 4.504.5, 5.504.4.5, Table 5.504.4.5, A4.504.1, Appendix A6.1 (OSHPD)A5.504.4.5.1, A5.504.8.5,

Additions and Alterations See Non-

residential Additions and Alterations Administration Chapter 1 Air Quality and Exhaust, Indoor – see Indoor Air Quality and Exhaust Appliances A4.303.3, A5.303.3, Appendix A6.1 (OSHPD) A5.207 Application Checklists A4.602, A5.602, Appendix A6.1 (OSHPD)

Bird Friendly Building Design A5.107 Building Envelope A4.204, Appendix A6.1 (OSHPD) A5.205 Building orientation Appendix A6.1(OSHPD), A5.204.6 Fenestration products and exterior doors Appendix A6.1(OSHPD), A5.205.1 Insulation and roofing products Appendix A6.1(OSHPD), A5.205.3 Life cycle assessment 5.409, A5.409 Building Maintenance and Operation 4.410, 5.410 Commissioning 5.410.2, A5.410.3 Sample compliance forms and templates Chapter 8 Operation and maintenance manual 4.410.1, 5.410.4.5 Recycling by occupants Appendix A6.1(OSHPD), A5.410, 5.410.1 Testing and adjusting 5.410.4

A6.1(OSHPD), A5.205.1 Insulation and roofing products Appendix A6.1(OSHPD), A5.205.3 Life cycle assessment 5.409, A5.409 Building Maintenance and Operation 4.410, 5.410 Commissioning 5.410.2, A5.410.3 Sample compliance forms and templates Chapter 8 Operation and maintenance manual 4.410.1, 5.410.4.5 Recycling by occupants Appendix A6.1(OSHPD), A5.410, 5.410.1 Testing and adjusting 5.410.4

Commissioning Commissioning Appendix A6.1 (OSHPD) A5.204, 5.410.2 Commissioning plan 5.410.2.3 Commissioning report 5.410.2.6 Construction Waste Reduction, Disposal and Recycling Appendix A6.1 (OSHPD) A5.408, 4.408, 5.408 Construction waste management 4.408.1, 5.408.1 Construction waste management plan 4.408.2, 5.408.1.1 Enhanced construction waste reduction

A4.408.1, A5.408.3.1 Excavated soil and land clearing debris 5.408.3

Deconstruction and Reuse of Existing Materials 4.105, A4.105 Reuse of materials A4.105.2

Deconstruction and Reuse of Existing Structures 5.105, A5.105 (Reserved) 4.105 Reuse of existing building 5.105.2, Chapter 8 (WS-3), A5.105.2, Chapter 8 (WS-6) Definitions Chapter 2 Durability, Enhanced and Reduced Maintenance 4.406, A4.406, A5.406 Choice of materials A5.406.1

Electric Vehicle (EV) Charging 4.106.4, 5.106.5.3, 5.106.5.5, 5.106.5.6, A4.106.8,

A5.106.5.3

INDEX

Alterations and additions 4.106.4.3, 5.106.5.4, 5.106.5.6.4 Electric vehicle charging stations (EVCS) 5.106.5.3.2, 5.106.5.6.2 EVCS alternative compliance 5.106.5.6.3 EVCS signage 5.106.5.3.5 Power allocation method 5.106.5.3.6, Table 5.106.5.3.6, A5.106.5.3.2 Tier 1, Table 5.106.5.3.2 Tier 1, A5.106.5.3.4 Tier 2, Table 5.106.5.3.4 Tier 2 Elevators, Escalators and Other Equipment A5.212 Energy Efficiency 4.201.1, A4.203.1, A4.204.1 Commissioning Appendix A6.1 (OSHPD) A5.204.4

ENERGY STAR equipment and appliances Appendix A6.1(OSHPD), A4.403.3, A5.204.1 General 4.201, 5.201, A5.201 Performance approach A4.203, A5.203 Outdoor lighting A5.203.1.1.1 Prescriptive approach Appendix A6.1(OSHPD), 203.3.1.2 Alterations to existing buildings A4.204.1, A4.204.1.2, A5.204.1,

A5.204.1.1 Energy Efficient Steel Framing A5.213 Environmental Comfort 4.507, 5.507,

A5.507

Acoustical control A4.507, A5.507.5 Daylight A5.507.2 Lighting and thermal comfort controls A5.507.1

Views A5.507.3

Fireplaces 4.503, 5.503 Foundation Systems A4.403 Frost protected foundation systems A4.403.1

Reduction in cement use A4.403.2 Framing, Energy Efficient Steel A5.213 Framing Techniques, Efficient A4.404, A5.404 Building systems A4.404.3 Lumber size A4.404.1

Pre-cut materials and details A4.404.4 Wood framing A5.404.1

Green Building Chapter 3 Mixed occupancy buildings 302 Phased projects 303 Voluntary tiers 304, 305 Voluntary measures 306

HVAC Design, Equipment and Installation Appendix A6.1 (OSHPD), A5.207

Indoor Air Quality And Exhaust 4.506, 5.506 Bathroom exhaust fans 4.506.1 Carbon dioxide monitoring 5.506.2 Carbon dioxide (CO 2 ) monitoring in classrooms 5.506.3

Filters 5.504.5, A4.506.1 Outside air delivery 5.506.1 Indoor Moisture Control 4.505, 5.505.1 Concrete slab foundations 4.505.2

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INDEX

Appendix A6.1 (OSHPD), Table A5.504.8.5 Covering of duct openings and protection of mechanical equipment during construction 4.504.1, 5.504.3 Environmental tobacco smoke control 5.504.7, Appendix A6.1 (OSHPD), A5.504.9 Finish material pollutant control 4.504.2, 5.504.4 Hazardous particulates and chemical pollutants A5.504.5 Indoor air quality (IAQ) during construction 5.504.1, A5.504.1 IAQ Post-construction A5.504.2 Paints and coatings 4.504.2.2, 5.504.4.3 Resilient flooring systems 4.504.4, 5.504.4.6, A4.504.2, A5.504.4.7 Thermal insulation 5.504.4.7, A4.504.3,

A5.504.4.8

Product GWP Limits Table 5.409.3

Referenced Organizations and Standards Chapter 6 Renewable Energy A5.211

Site Development 4.106, 5.106, A4,106, A5.106 Bicycle parking and changing rooms 5.106.4, A5.106.4.3, Table A5.106.4.3 Bird friendly building design A5.107 Building orientation Appendix A6.1 (OSHPD), A5.106.9 Designated parking for clean air vehicles A5.106.5.1 Exterior wall shading A5.106.7 Grading and paving 4.106.3, 5.106.10 Heat island effect – cool roof Tables A4.106.5(1) – (4), A5.106.11.2, Table

A5.106.11.2 Heat island effect – hardscape alternatives A5.106.11, A5.106.11.1 Landscape design A4.106.3 Light pollution reduction 5.106.8 Low impact development A5.106.3 Reduce parking capacity A5.106.6 Shade trees 5.106.12, A5.106.11.3 Soil analysis and protection A4.106.2 Storm water management A5.106.2 Water permeable surfaces A4.106.4 Site Preservation A4.104, A5.104 Reduce development footprint and optimize open space A5.104.1 Site Selection A4.103, A5.103 Brownfield, greyfield or infill site development A5.103.2 Community connectivity A4.103.2, A5.103.1

Voluntary Measures 301.1, 306 Voluntary Tiers 304, 305, 306, A4.601, A5.601

Water Resistance and Moisture Management 5.407, 5.505, A4.407, Appendix A6.1 (OSHPD) A5.407 Moisture control 4.505, 5.407.2, 5.505, Appendix A6.1 (OSHPD) A5.407.9, Appendix A6.1 (OSHPD) A5.505.2 Weather protection 5.407.1, A5.407.3

Water Reuse Systems A4.305 Graywater A4.305.1, A5.304.8 Recycled water for landscape irrigation A4.305.3 Recycled water piping A4.305.2 Water Use, Indoor 4.303, 5.303, A4.303, A5.203

Appliances A4.303.3, A5.303.3, Appendix A6.1 (OSHPD) A5.210 Dual plumbing A5.303.5 Fixture flow rates 4.303.1, Table A5.303.2.3.1, 5.303.2.3.1, A4.303 Kitchen faucets and dishwashers

A4.303.1

Meters 4.303.2, 5.303.1 Multiple showerheads serving one shower 4.303.1.3.2, 5.303.3.3.2 Nonwater urinals and waterless toilets

A4.303.4, A5.303.4.1 Plumbing fixtures and fittings 4.303.1, 4.303.2, 5.303.3, 5.303.6 Tier 1, 12% savings; Tier 2, 20% savings; and 25% savings A5.303.2.1, A5.303.2.3.1, A5.303.2.3.2,

A5.303.2.3.3

Wastewater reduction 5.303.4

Water Use Baseline Table A5.303.2.2

Water Use, Outdoor 4.304, 5.304, A4.304, A5.304

Graywater irrigation system A5.304.8 Low-water consumption irrigation system A4.304.1 Outdoor potable water meters A4.304.3, A5.304.2 Potable water elimination A4.304.2 Previously developed sites A5.304.7 Rainwater or stormwater collection systems A4.304.1 Restoration of areas disturbed by construction A5.304.6 Worksheet Baseline Water Use Chapter 8, (WS-1) 12%, 20% or 25% Reduction Water Use Calculation Table Chapter 8, (WS-2) Building Reuse Chapter 8, (WS-3) Whole Building Life Cycle Assessment 5.409.2, Chapter 8, (WS-4) Product GWP Compliance— Prescriptive Path 5.409.3, Chapter 8, (WS-5) Building Reuse Tier 1 and Tier 2 Chapter 8, (WS-6) Whole Building Life Cycle Assessment A5.409.2, Chapter 8, (WS-7) Product GWP Compliance— Prescriptive Path A5.409.3, Chapter 8, (WS-8) Whole Building Life Cycle Assessment 5.409.2, A5.409.2, Chapter 8, (WS-9)

INDEX-2 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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HISTORY NOTE APPENDIX

California Code of Regulations, Title 24, Part 11

HISTORY:

For prior history, see the History Note Appendix to the California Green Building Standards Code, 2022 Edition, effective January 1, 2023.

(BSC 03/24, HCD 04/24, DSA-SS 03/24, CEC 02/24)—Repeal the 2022 adoption of the California Green Building Standards Code, CCR Title 24, Part 11 and adopt the 2025 California Green Building Standards Code . Approved by the California Building Standards Commission on December 17, 2024, filed with the Secretary of State on January 10, 2025, and effective on January 1, 2026.

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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)