Chapter 3 — GREEN BUILDING

Section 301 — GENERAL

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

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301.1 Scope.

301.1 Scope. Buildings shall be designed to include the green building measures specified as mandatory in the application checklists contained in this code. Voluntary green building measures are also included in the application checklists and may be included in the design and construction of structures covered by this code, but are not required unless adopted by a city, county, or city and county as specified in Section 101.7. 301.1.1 Additions and alterations. [HCD] The mandatory provisions of Chapter 4 shall be applied to additions or alterations of existing residential buildings where the…

301.2 Low-rise and high-rise residential buildings.

301.2 Low-rise and high-rise residential buildings. [HCD] The provisions of individual sections of CALGreen may apply to either low-rise residential buildings, high-rise residential buildings, or both. Individual sections will be designated by banners to indicate where the section applies specifically to low-rise only (LR) or high-rise only (HR). When the section applies to both low-rise and highrise buildings, no banner will be used.

301.3 Nonresidential additions and alterations.

301.3 Nonresidential additions and alterations. [BSC-CG] The provisions of individual sections of Chapter 5 apply to newly constructed buildings, building additions of 1,000 square feet or greater, and/or building alterations with a permit valuation of $200,000 or above (for occupancies within the authority of California Building Standards Commission). Code sections relevant to additions and alterations shall only apply to the portions of the building being added or altered within the scope of the permitted work. A code section will be designated by a banner to indicate where the code section…

301.4 Mandatory measures for public schools and community colleges.

301.4 Mandatory measures for public schools and community colleges. [DSA-SS] New building construction and site work on a new or existing site shall comply with Section 301.4. 301.4.1 Building and site construction on a new site shall comply with Chapter 5 as adopted by DSA-SS. 301.4.2 Work on an existing site shall comply with Section 301.4.2. 301.4.2.1 Newly constructed site work shall comply with Chapter 5 as adopted by DSA-SS. 301.4.2.2 Newly constructed buildings shall comply with Chapter 5 as adopted by DSA-SS and Section 301.4.3. 301.4.2.3 Additions to existing buildings shall comply…

301.5 Health Facilities.

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. on Jul 18, 2025 11:14 AM (CDT) THEREUNDER. GREEN BUILDING