CALGreen · California Green Building Standards Code (CALGreen)
Application checklists, CALGreen verification guidelines & voluntary tiers (Appendix A4/A5)
Appendices A4 and A5 provide the residential and nonresidential checklists and CALGreen verification guidelines, including the voluntary Tier 1 and Tier 2 frameworks for enhanced compliance.
Last reviewed: July 6, 2026
Overview
Appendices A4 (residential) and A5 (nonresidential) collect the CALGreen voluntary measures, the application checklists used at permit submission, and the CALGreen verification guidance used to document compliance — including the Tier 1 and Tier 2 voluntary frameworks for enhanced performance. The appendices are organized by topic (Planning & Design, Energy, Water, Materials, Environmental Quality) and include the Residential Occupancies Application Checklist at §A4.602 and the Nonresidential Mandatory and Tier checklists at §A5.602, §A5.602.1 and §A5.602.2, respectively .
This material matters because the checklists are the primary form used at plan check to show which mandatory measures apply and which voluntary tier measures have been selected; the code explains that mandatory vs. voluntary measures and how to use the checklists in Chapter 1 (see §§101.10–101.11) and in the effective-use guidance on voluntary tiers in §304.1 and §305.1 . For nonresidential projects the CALGreen Verification Guidelines provide step‑by‑step Tier 1 and Tier 2 checklists (including thresholds for when those checklists apply) and mandatory-measure checklists used by the enforcing agency to verify compliance (§A5.602, §A5.602.1, §A5.602.2) .
Key sections to watch when preparing permit submittals include §A4.601 (tier scope and prerequisites), §A4.602 (residential application checklist), §A5.601 (nonresidential tiers), and the verification/checklist sections §A5.602, §A5.602.1 and §A5.602.2 — each ties checklist items to the chapter/section where the measure is described and identifies the expected verification method (installer/designer, enforcing agency, or third‑party) .
In this section
Code references
Grounded in the retrieved California Green Building Standards Code (CALGreen) — click a citation to read the verbatim passage:
CALGreen § 8-40 High relevance — show source text
. . . . . . . . . . . . . 8-40
APPENDIX A4 RESIDENTIAL
VOLUNTARY MEASURES. . . . . . . . . . . . . . . . . APPENDIX A4-3
A4.1 Planning and Design . . . . . . . . . . . . . . . . . APPENDIX A4-3 A4.2 Energy Efficiency . . . . . . . . . . . . . . . . . . . . APPENDIX A4-9 A4.3 Water Efficiency and Conservation . . . APPENDIX A4-13 A4.4 Material Conservation and Resource Efficiency . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX A4-15 A4.5 Environmental Quality . . . . . . . . . . . . . . APPENDIX A4-19 A4.6 Tier 1 and Tier 2 . . . . . . . . . . . . . . . . . . . . APPENDIX A4-21
Division A4.6—Residential Occupancies Application Checklist . . . . . . . . . . . . . APPENDIX A4-23 A4.7 Residential Model Ordinance . . . . . . . . . APPENDIX A4-31
APPENDIX A5 NONRESIDENTIAL
VOLUNTARY MEASURES. . . . . . . . . . . . . . . . . APPENDIX A5-3
A5.1 Planning and Design . . . . . . . . . . . . . . . . . APPENDIX A5-3 A5.2 Energy Efficiency . . . . . . . . . . . . . . . . . . . APPENDIX A5-13 A5.3 Water Efficiency and Conservation . . . APPENDIX A5-19 A5.4 Material Conservation and Resource Efficiency . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX A5-25 A5.5 Environmental Quality . . . . . . . . . . . . . . APPENDIX A5-35 A5.6 Voluntary Tiers . . . . . . . . . . . . . . . . . . . . . APPENDIX A5-41 A5.601 CALGren Tier 1 and Tier 2. . . . . . . . . . APPENDIX A5-41
A5.602 CALGreen Verification Guidelines Mandatory Measures Checklist . . . . . . . . . . . . . . . APPENDIX A5-44
A5.602.1 CALGreen Verification Guidelines
Tier 1 Checklist . . . . . . . . . . . . . . . . . APPENDIX A5-48
A5.602.2 CALGreen Verification Guidelines
Tier 2 Checklist . . . . . . . . . . . . . . . . . APPENDIX A5-55
APPENDIX A6 VOLUNTARY STANDARDS FOR HEALTH
CALGreen § 7-104 High relevance — show source text
- Section 7-104 in the California Administrative Code for the Office of the Statewide Health Planning and Development.
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ADMINISTRATION
101.9 Effective date of this code. Only those standards approved by the California Building Standards Commission that are effective at the time an application for a building permit is submitted shall apply to the plans and specifications for, and to the construction performed under, that permit. For the effective dates of the provisions contained in this code, see the appropriate application checklist and the History Note page of this code.
101.10 Mandatory requirements. This code contains both mandatory and voluntary green building measures. Mandatory and voluntary measures are identified in the appropriate application checklist contained in this code.
101.11 Effective use of this code. The following steps shall be used to establish which provisions of this code are applicable to a specific occupancy:
- Establish the type of occupancy.
- Verify which state agency has authority for the established occupancy by reviewing the authorities list in Sections 103 through 106.
- Once the appropriate agency has been identified, find the chapter which covers the established occupancy.
- The Matrix Adoption Tables at the beginning of Chapters 4 and 5 identify the mandatory green building measures necessary to meet the minimum requirements of this code for the established occupancy.
- Voluntary tier measures are contained in Appendix Chapters A4 and A5. A checklist containing each green building measure, both required and voluntary, is provided at the end of each appendix chapter. Each measure listed in the application checklist has a section number which correlates to a section where more information about the specific measure is available.
- The application checklist identifies which measures are required by this code and allows users to check off which voluntary items have been selected to meet voluntary tier levels if desired or mandated by a city, county, or city and county.
SECTION 102—CONSTRUCTION DOCUMENTS AND INSTALLATION VERIFICATION
102.1 Submittal documents. Construction documents and other data shall be submitted in one or more sets with each application for a permit. Where special conditions exist, the enforcing agency is authorized to require additional construction documents to be prepared by a licensed design professional and may be submitted separately.
Exception: The enforcing agency is authorized to waive the submission of construction documents and other data not required to be prepared by a licensed design professional.
102.2 Information on construction documents. Construction documents shall be of sufficient clarity to indicate the location, nature and scope of the proposed green building feature and show that it will conform to the provisions of this code, the California Building Standards Code and other relevant laws, ordinances, rules and regulations as determined by the enforcing agency.
102.3 Verification. Documentation of conformance for applicable green building measures shall be provided to the enforcing agency. Alternate methods of documentation shall be acceptable when the enforcing agency finds that the proposed alternate documentation is satisfactory to demonstrate substantial conformance with the intent of the proposed green building measure.
[HCD] Documentation of conformance for applicable green building measures shall be provided to the enforcing agency. All projects shall submit a completed Residential Occupancies Application Checklist that includes Chapter 4 residential mandatory measures and Tier 1 or Tier 2, as applicable. References to the measure-specific documentation used to show compliance shall be included. Alternate methods of documentation shall be acceptable when the enforcing agency f
CALGreen § 1.2 High relevance — show source text
For questions on California state agency amendments, please refer to the contact list on page v.
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LEGEND FOR AGENCY ADOPTIONS
Unless otherwise noted, state agency adoptions are indicated by the following banners in the section leaders: Department of Housing and Community Development: [HCD]
California Building Standards Commission, CALGreen: [BSC-CG]
Division of the State Architect, Structural Safety: [DSA-SS]
Office of Statewide Hospital Planning and Development: [OSHPD 1, 2 & 4]
See Chapter 1, Sections 103–106 for applications regulated by the respective state agencies.
EFFECTIVE USE OF THIS CODE
The format of this code is common to other parts of the California Building Standards Code and contains building standards applicable to occupancies which fall under the authority of different state agencies. Occupancies and applications under the authority of a specific state agency are identified in Chapter 1, Sections 103 through 106. Sections of this code which are applicable and adopted by each state agency are identified in the Matrix Adoption Tables located at the beginning of each chapter. The following outline is provided as a guide to establish which provisions are applicable to a specific occupancy.
Establish the type of occupancy.
Verify which state agency has authority for the established occupancy by reviewing the authorities list in Sections 103 through
Once the appropriate agency has been identified, find the chapter which covers the established occupancy.
The Matrix Adoption Tables at the beginning of Chapters 4 and 5 identify the required green building measures necessary to meet the minimum requirements of this code for the established occupancy.
Voluntary tier measures are contained in Appendix Chapters A4 and A5. A Checklist containing each green building measure, both required and voluntary is provided at the end of each appendix chapter. Each measure listed in the application checklist has a section number which correlates to a section where more information about the specific measure is available.
The Application Checklist identifies which measures are required by this code and allows users to check-off which voluntary items have been selected to meet voluntary tier levels if desired or mandated by a city, county, or city and county.
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CALIFORNIA CODE OF REGULATIONS, TITLE 24
California State Agency Contact List
The following state agencies may propose building standards for buildings, structures and applications under their authority for publication in Title 24. Notice of such proposals may be requested from each agency. See Sections 1.2 through 1.14 of the California Building Code (Part 2, T24) for detailed information on the regulatory authority of most state agencies summarized below. Note [agency acronyms] shown in banners/Matrix Adoption Tables in T24.
Board of State and Community Corrections [BSCC] bscc.ca.gov BSCC-Mail@bscc.ca.gov
(916) 445-5073 Local Detention Facilities
Building Standards Commission [BSC, BSC-CG]
dgs.ca.gov/BSC cbsc@dgs.ca.gov
(916) 263-0916 State Buildings including UC & CSU Nonresidential Green Buildings Standards
Department of Consumer Affairs Boards/Bureaus:
Acupuncture Board [CA]
CALGreen § 303.3 High relevance — show source text
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
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
CALGreen § 601.5.2 High relevance — show source text
A4.601.5.2 Prerequisite and elective measures for Tier 2. In addition to the mandatory measures, compliance with the following prerequisite and elective measures from Appendix A4 is also required to achieve Tier 2 status.
- From Division A4.1, Planning and Design.
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APPENDIX A4 — RESIDENTIAL VOLUNTARY MEASURES
1.1. Comply with the topsoil protection requirements for Tier 1 and Tier 2 in Section A4.106.2.3. 1.2. Comply with the 30 percent permeable paving requirements in Section A4.106.4. 1.3. Comply with the cool roof requirements in Section A4.106.5. 1.4. Comply with the Tier 2 electric vehicle (EV) charging requirements in Section A4.106.8. 1.5. Comply with at least four elective measures selected from Division A4.1. 2. From Division A4.2, Energy Efficiency. 2.1. For newly constructed low-rise residential buildings, comply with the energy efficiency requirements in Sections A4.203.1, A4.203.1.1, Table A4.203.1.1, A4.203.1.2 and A4.203.1.3.
- From Division A4.3, Water Efficiency and Conservation. 3.1. Comply with at least three elective measures selected from Division A4.3.
- From Division A4.4, Material Conservation and Resource Efficiency. 4.1. Comply with the 25 percent cement reduction requirements in Section A4.403.2. 4.2. Comply with the 15 percent recycled content requirements in Section A4.405.3.1. 4.3. Comply with the 75 percent reduction in construction waste in Section A4.408.1. 4.4. Comply with at least four elective measures selected from Division A4.4.
- From Division A4.5, Environmental Quality. 5.1. Comply with the 100 percent resilient flooring systems requirements in Section A4.504.2. 5.2. Comply with the thermal insulation requirements for Tier 1 and Tier 2 in Section A4.504.3. 5.3. Comply with at least one elective measure selected from Division A4.5.
Note: The Residential Occupancies Application Checklist contained in Section A4.602 may be used to show which elective measures are selected.
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DIVISION A4.6 – TIER 1 AND TIER 2
SECTION A4.602 — RESIDENTIAL OCCUPANCIES APPLICATION CHECKLIST
CALGreen § 8-6 Medium relevance — show source text
. . . . . . . . . . . . . . . 8-6 Worksheet (WS-9) 5.409.2 and A5.409.2 Whole Building Life Cycle Assessment: . . . . . . . . . . . . . . . . 8-7 Construction Waste Management (CWM) Plan . . . . . . . . . . . 8-8 Construction Waste Management (CWM) Worksheet. . . . . . 8-9 Construction Waste Management (CWM) Acknowledgment. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10 Title 23, Waters, California Code of Regulations . . . . . . . . . 8-11 Commissioning Referenced Standards for Non-energy Systems. . . . . . . . . . . . . . . . . . . . . . . . . 8-13 IES TM-15-11 Table A-1, Table 130.2-A and Table 130.2-B Uplight and Glare Ratings Tables. . . . . . . . . . . . . . 8-40
APPENDIX A4 RESIDENTIAL
VOLUNTARY MEASURES. . . . . . . . . . . . . . . . . APPENDIX A4-3
A4.1 Planning and Design . . . . . . . . . . . . . . . . . APPENDIX A4-3 A4.2 Energy Efficiency . . . . . . . . . . . . . . . . . . . . APPENDIX A4-9 A4.3 Water Efficiency and Conservation . . . APPENDIX A4-13 A4.4 Material Conservation and Resource Efficiency . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX A4-15 A4.5 Environmental Quality . . . . . . . . . . . . . . APPENDIX A4-19 A4.6 Tier 1 and Tier 2 . . . . . . . . . . . . . . . . . . . . APPENDIX A4-21
Division A4.6—Residential Occupancies Application Checklist . . . . . . . . . . . . . APPENDIX A4-23 A4.7 Residential Model Ordinance . . . . . . . . . APPENDIX A4-31
APPENDIX A5 NONRESIDENTIAL
VOLUNTARY MEASURES. . . . . . . . . . . . . . . . . APPENDIX A5-3
CALGreen § 4.304.1 Medium relevance — show source text
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
CALGreen § 507.4.1.1 Medium relevance — show source text
507.4.1.1||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Performance method|5.507.4.2||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Site features|5.507.4.2.1||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Documentation of compliance|5.507.4.2.2||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Interior sound transmission (with note)|5.507.4.3||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Ozone depletion and greenhouse gas reductions|5.508.1||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Chlorofluorocarbons (CFCs)|5.508.1.1||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Halons|5.508.1.2||||| |(continued)
DIVISION 5.5
Environmental
Quality|Mandatory|Supermarket refrigerant leak reduction for retail food
stores 8,000 square feet or more|5.508.2
through
5.508.2.6.3||||| |||END OF MANDATORY PROVISIONS||||||Documentation Author's / Responsible Designer's Declaration Statement
□ Mandatory: I attest that this mandatory provisions checklist is accurate and complete.Col2 Signature: Signature: Company: Date: Address: License: City/State/Zip: Phone: 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A5-47
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APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES
A5.602.1
CALGreen VERIFICATION GUIDELINES
TIER 1 CHECKLIST
Application: This checklist shall be used for nonresidential projects that meet the following: new construction, or building additions of 1,000 square feet or greater, or building alterations with a permit valuation of $200,000 or more pursuant to Section 301.3, AND are adopting Tier 1 voluntary measures.
Note: All applicable mandatory requirements in Chapter 5 shall be met prior to applying Tier 1 voluntary measures.
Instructions:
Comply with all Tier 1 prerequisite measures from the various categories shown on the table below.
Add a “ Y ” to all mandatory and Tier 1 prerequisite measures in the appropriate columns.
Select the required number of additional electives from those categories shown on the table below and add a “ Y ” on the selected elective and add an “ N ” on the rest.
CALGreen § 602.1 Medium relevance — show source text
VOLUNTARY MEASURES. . . . . . . . . . . . . . . . . APPENDIX A5-3
A5.1 Planning and Design . . . . . . . . . . . . . . . . . APPENDIX A5-3 A5.2 Energy Efficiency . . . . . . . . . . . . . . . . . . . APPENDIX A5-13 A5.3 Water Efficiency and Conservation . . . APPENDIX A5-19 A5.4 Material Conservation and Resource Efficiency . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX A5-25 A5.5 Environmental Quality . . . . . . . . . . . . . . APPENDIX A5-35 A5.6 Voluntary Tiers . . . . . . . . . . . . . . . . . . . . . APPENDIX A5-41 A5.601 CALGren Tier 1 and Tier 2. . . . . . . . . . APPENDIX A5-41
A5.602 CALGreen Verification Guidelines Mandatory Measures Checklist . . . . . . . . . . . . . . . APPENDIX A5-44
A5.602.1 CALGreen Verification Guidelines
Tier 1 Checklist . . . . . . . . . . . . . . . . . APPENDIX A5-48
A5.602.2 CALGreen Verification Guidelines
Tier 2 Checklist . . . . . . . . . . . . . . . . . APPENDIX A5-55
APPENDIX A6 VOLUNTARY STANDARDS FOR HEALTH
FACILITIES [OSHPD 1, 2 & 4] . . . . . . . . . . . APPENDIX A6.1-3 A6.1 Site Planning and Design . . . . . . . . . . . APPENDIX A6.1-3 A6.2 Energy Efficiency . . . . . . . . . . . . . . . . . . APPENDIX A6.1-3 A6.4 Material Conservation and Resource Efficiency . . . . . . . . . . . . . APPENDIX A6.1-32 A6.5 Environmental Quality . . . . . . . . . . . . APPENDIX A6.1-33
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDEX-1
HISTORY NOTE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HIST-1
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CALIFORNIA GREEN BUILDING STANDARDS CODE – MATRIX ADOPTION TABLE
CHAPTER 1 – ADMINISTRATION
(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
CALGreen § 301.5 Medium relevance — show source text
301.5 Health Facilities. [OSHPD 1, 2 & 4] Health facilities under the jurisdiction of the Office of Statewide Health Planning and Development (OSHPD) are required to comply with the mandatory measures prescribed in Section 5.304, Outdoor Water Use. Compliance with Section 5.304, as adopted by the Building Standards Commission, is enforced by the local agency having jurisdiction. Evidence of local approval shall be submitted to OSHPD prior to issuance of plan approval or a building permit.
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GREEN BUILDING
SECTION 302—MIXED OCCUPANCY BUILDINGS
302.1 Mixed occupancy buildings. In mixed occupancy buildings, each portion of a building shall comply with the specific green building measures applicable to each specific occupancy.
Exceptions:
- [HCD] Accessory structures and accessory occupancies serving residential buildings shall comply with Chapter 4 and Appendix A4, as applicable.
- [HCD] For the purposes of CALGreen, live/work units, complying with Section 508.5 of the California Building Code, shall not be considered mixed occupancies. Live/work units shall comply with Chapter 4 and Appendix A4, as applicable.
SECTION 303—PHASED PROJECTS
303.1 Phased projects. For shell buildings and others constructed for future tenant improvements, only those code measures relevant to the building components and systems considered to be new construction (or newly constructed) shall apply.
303.1.1 Initial tenant improvements. The provisions of this code shall apply only to the initial tenant improvements to a project. Subsequent tenant improvements shall comply with the scoping provisions in Section 301.3 nonresidential additions and alterations.
SECTION 304—VOLUNTARY TIERS
304.1 Purpose. Voluntary tiers are intended to further encourage building practices that improve public health, safety and general welfare by promoting the use of building concepts which minimize the building’s impact on the environment and promote a more sustainable design.
304.1.1 Tiers. The provisions of Divisions A4.6 and A5.6 outline means, in the form of voluntary tiers, for achieving enhanced construction levels by incorporating additional measures for residential and nonresidential new construction. Voluntary tiers may be adopted by local governments and, when adopted, enforced by local enforcing agencies. Buildings complying with tiers specified for each occupancy contain additional prerequisite and elective green building measures necessary to meet the threshold of each tier. See Section 101.7 of this code for procedures and requirements related to local amendments, additions or deletions, including changes to energy standards.
[BSC & HCD] Where there are practical difficulties involved in complying with the threshold levels of a tier, the enforcing agency may grant modifications for individual cases. The enforcing agency shall first find that a special individual reason makes the strict letter of the tier impractical and that modification is in conformance with the intent and purpose of the measure. The details of any action granting modification shall be recorded and entered in the files of the enforcing agency.
SECTION 305 [OSHPD 1]— CALGreen TIER 1 AND CALGreen TIER 2
305.1 CALGreen Tier 1 and CALGreen Tier 2 buildings contain voluntary green building measures necessary to meet the threshold of each level.
CALGreen § 5.508.2 Medium relevance — show source text
000 square feet or more|5.508.2
through
5.508.2.6.3||||| |||END OF MANDATORY PROVISIONS||||||Documentation Author's / Responsible Designer's Declaration Statement
□ Mandatory: I attest that this mandatory provisions checklist is accurate and complete.Col2 Signature: Signature: Company: Date: Address: License: City/State/Zip: Phone: 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A5-47
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES
A5.602.1
CALGreen VERIFICATION GUIDELINES
TIER 1 CHECKLIST
Application: This checklist shall be used for nonresidential projects that meet the following: new construction, or building additions of 1,000 square feet or greater, or building alterations with a permit valuation of $200,000 or more pursuant to Section 301.3, AND are adopting Tier 1 voluntary measures.
Note: All applicable mandatory requirements in Chapter 5 shall be met prior to applying Tier 1 voluntary measures.
Instructions:
Comply with all Tier 1 prerequisite measures from the various categories shown on the table below.
Add a “ Y ” to all mandatory and Tier 1 prerequisite measures in the appropriate columns.
Select the required number of additional electives from those categories shown on the table below and add a “ Y ” on the selected elective and add an “ N ” on the rest.
Count the total number of Tier 1 prerequisite measures plus the additional electives and write down the total number at the end of the checklist. Determine if the required number of Tier 1 measures have been selected to achieve Tier 1 compliance.
Y = Yes (section has been selected and/or included) N = No (section has not been selected and/or included) O = Other (provide explanation)
[N] = New construction pursuant to Section 301.3
[A] = Additions and/or Alterations pursuant to Section 301.3
CHAPTER 5
DIVISIONSCol2 SECTION TITLE CODE
SECTIONY N O PLAN SHEET,
SPEC OR
ATTACHDIVISION 5.1
Planning and
Design
(continued)Mandatory Deconstruction and reuse of existing structures,
Scope with Exception5.105.1 DIVISION 5.1
Planning and
Design
(continued)Mandatory Reuse of existing building & Verification of compliance with note 5.105.2 and 5.105.2.1 DIVISION 5.1
Planning and
Design
(continued)Mandatory Storm water pollution prevention for projects that disturb
less than 1 acre of land5.106.1 through
5.106.2DIVISION 5.1
Planning and
Design
(continued)Mandatory Short-term bicycle parking 5.106.4.1. CALGreen § 3.1. Medium relevance — show source text
- From Division A4.3, Water Efficiency and Conservation. 3.1. Comply with at least two elective measures selected from Division A4.3.
- From Division A4.4, Material Conservation and Resource Efficiency. 4.1. Comply with the 20 percent cement reduction requirements in Section A4.403.2. 4.2. Comply with the 10 percent recycled content requirements in Section A4.405.3.1. 4.3. Comply with the 65 percent reduction in construction waste in Section A4.408.1. 4.4. Comply with at least two elective measures selected from Division A4.4.
- From Division A4.5, Environmental Quality. 5.1. Comply with the 90 percent resilient flooring systems requirements in Section A4.504.2. 5.2. Comply with the thermal insulation requirements for Tier 1 in Section A4.504.3. 5.3. Comply with at least one elective measure selected from Division A4.5.
Note: The Residential Occupancies Application Checklist contained in Section A4.602 may be used to show which elective measures are selected.
A4.601.5 Tier 2. To achieve Tier 2 status a project must comply with the following.
Note: The measures necessary to achieve Tier 2 status are very stringent. Cities, counties, and cities and counties considering adoption of Tier 2 as mandatory should carefully consider the stringency of each measure and ensure that the measures are achievable in their location.
A4.601.5.1 Mandatory measures for Tier 2. The project shall meet or exceed all of the mandatory measures in Chapter 4, Divisions 4.1 through 4.5 and Chapter 7 as applicable.
A4.601.5.2 Prerequisite and elective measures for Tier 2. In addition to the mandatory measures, compliance with the following prerequisite and elective measures from Appendix A4 is also required to achieve Tier 2 status.
- From Division A4.1, Planning and Design.
2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A4-21
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
APPENDIX A4 — RESIDENTIAL VOLUNTARY MEASURES
1.1. Comply with the topsoil protection requirements for Tier 1 and Tier 2 in Section A4.106.2.3. 1.2. Comply with the 30 percent permeable paving requirements in Section A4.106.4. 1.3. Comply with the cool roof requirements in Section A4.106.5. 1.4. Comply with the Tier 2 electric vehicle (EV) charging requirements in Section A4.106.8. 1.5. Comply with at least four elective measures selected from Division A4.1. 2. From Division A4.2, Energy Efficiency. 2.1. For newly constructed low-rise residential buildings, comply with the energy efficiency requirements in Sections A4.203.1, A4.203.1.1, Table A4.203.1.1, A4.203.1.2 and A4.203.1.3.
- From Division A4.3, Water Efficiency and Conservation. 3.1. Comply with at least three elective measures selected from Division A4.3.
- From Division A4.4, Material Conservation and Resource Efficiency. 4.1.
Frequently asked questions
Are the measures in Appendices A4 and A5 mandatory?
No — the appendix measures are voluntary unless a local jurisdiction adopts them. The appendices spell out Tier 1 and Tier 2 options that a city or county may adopt; mandatory baseline measures remain in Chapters 4 (residential) and 5 (nonresidential) and are identified on the application checklists .
Which checklist should I submit with permit documents?
Use §A4.602 for residential projects (Residential Occupancies Application Checklist). For nonresidential work submit the mandatory measures checklist at §A5.602; if you are pursuing a voluntary tier, use the Tier 1 checklist (§A5.602.1) or Tier 2 checklist (§A5.602.2) as applicable (the nonresidential checklists describe the project size/valuation thresholds) .
How is compliance verified and documented?
Verification documentation is required at plan check and as part of the project record; the CALGreen verification checklists define which items are proofed by the enforcing agency, installer/designer, or third‑party and reference Chapter 7 procedures for verification and recordkeeping (see A5.601.4 and the checklist instructions) .
More in California Green Building Standards Code (CALGreen)
- Administration (Chapter 1)
- Nonresidential Voluntary Measures (Appendix A5 — divisions A5.1–A5.6, electives & verification)
- Residential Mandatory Measures — Planning & Design; Energy; Water; Materials; Environmental Quality (Chapter 4)
- Definitions (Chapter 2)
- Voluntary Standards for Health Facilities (Appendix A6 / OSHPD guidance)
- Green Building – scope, mixed occupancies, phased projects (Chapter 3)
- Residential Voluntary Measures (Appendix A4 — divisions A4.1–A4.6, tiers & model ordinance)
- Nonresidential Mandatory Measures — Planning & Design; Energy; Water; Materials; Environmental Quality (Chapter 5)
- Compliance verification, construction documents & checklists (Section 102, Chapter 7, Appendix checklists)
- Referenced Organizations and Standards (Chapter 6)
- Voluntary Tiers and CALGreen Tier 1 / Tier 2 (performance tiers, thresholds)
- Installer and Special Inspector Qualifications (Chapter 7)
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California Green Building Standards Code (CALGreen)