Gardena enforces 2025 CBC, T24 Pt 2 based on 2024 IBC with 2 local amendments on top (Ord. 1888 (findings: Resolution 6729)). The amendments are the part that gets sets corrected. The state edition is only the floor. Gardena sits in Los Angeles County.
Edition changeover: Projects with a complete application on or before 2025-12-31 may still be reviewed under the 2022 Title 24.
| Discipline | Adopted code | Local amendment |
|---|---|---|
| Building | 2025 CBC, T24 Pt 2 based on 2024 IBC | Gardena local amendments: Ord. 1888 (findings: Resolution 6729)Local text supersedes the state code |
| Residential | 2025 CRC, T24 Pt 2.5 based on 2024 IRC | n/a |
| Existing buildings | 2025 CEBC, T24 Pt 10 based on 2024 IEBC | n/a |
| Fire | 2025 CFC, T24 Pt 9 based on 2024 IFC | n/a |
| Electrical | 2025 CEC, T24 Pt 3 based on 2023 NEC | n/a |
| Mechanical | 2025 CMC, T24 Pt 4 based on 2024 UMC | n/a |
| Plumbing | 2025 CPC, T24 Pt 5 based on 2024 UPC | n/a |
| Energy | 2025 Energy Code, T24 Pt 6 | n/a |
| Green / sustainability | 2025 CALGreen, T24 Pt 11 | n/a |
| Accessibility | 2025 CBC Ch 11A/11B, T24 Pt 2 | n/a |
| Wildland-urban interface | 2025 CA-WUIC, T24 Pt 7 based on 2024 IWUIC | n/a |
| Historical buildings | 2025 CHBC, T24 Pt 8 | n/a |
| Administrative | 2025 CAC, T24 Pt 1 | n/a |
| Zoning | No state-adopted code | Local zoning ordinance (city or county), subject to state preemptionLocal text supersedes the state code |
Quoted from the adopted ordinance. These are the provisions that differ from the state code, which is where most correction lists come from. Excerpts, not the whole ordinance. Follow the source link for the full text.
15.06.050 Violations. Section 114 of the 2025 California Building Code shall be amended to read as follows in its entirety: 114. VIOLATIONS. A. Unlawful acts. It shall be unlawful for any person, firm or corporation to erect, construct, enlarge, alter, extend, repair, move, improve, remove, convert or demolish, equip, use, occupy or maintain any building or structure or cause or permit the same to be done in violation of this Code. B. Notice of violation. […]
15.06.090 Appendix J, Grading Appendix J is hereby amended to add the following sections to read as follows: Section J112.1 Sediment control. Docusign Envelope ID: 25FD48F8-BFB5-46EE-A7C3-6C0CE079F6C8 A. Sediment caused by the grading project shall be retained on the site to the greatest extent feasible. The maximum permanent rate of sediment loss after completion of the project should not exceed the natural erosion rate which occurred prior to the grading project. If, in the opinion of the building official, excessive erosion occurs from the project, erosion and sediment control measures shall be immediately implemented to reduce erosion to allowable levels. B. […]
105.5 EXPIRATION OF PERMITS. Every permit issued shall become invalid unless the work on the site authorized by such permit is commenced within 12 months after its issuance, or if the work authorized on the site by such permit is suspended or abandoned for a period of 12 months after the time the work is commenced. The building official is authorized to grant, in writing, one or more extensions of time, for periods not more than 180 days each. The extension shall be requested in writing and justifiable cause demonstrated. Docusign Envelope ID: 25FD48F8-BFB5-46EE-A7C3-6C0CE079F6C8
902.1 ROOF COVERING MATERIALS. Roofs shall be covered with materials as set forth in Sections R904 and R905. A minimum Class A or B roofing shall be installed in areas designated by this section. Classes A or B roofing required by this section to be listed shall be tested in accordance with UL 790 or ASTM E 108. Minimum Roof Covering Classification for different types of construction for new buildings, re roofs or additions except for the construction of roofs in Very High Fire Hazard Zones. Table 902.1
903.2 WHERE REQUIRED. Approved automatic sprinkler systems in new buildings and structures shall be provided in the locations described in Sections 903.2.1 through 903.2.21. 903.2.13 EXPANSION OF EXISTING BUILDINGS. An automatic sprinkler system is required in any existing building subject to alteration or expansion if (1) the expansion exceeds 50 percent of the existing gross floor area; or (2) the cost of remodeling, expansion or improvement exceeds 50 percent of the value of the existing structure as determined by the Building Official. The size or valuation of an existing building shall be deemed to exceed fifty (50) percent if: 1. […]
3306.10 Fencing and Pedestrian Protection. Fencing and pedestrian protection shall be required at all building and demolition sites as follows: 1. Prior to issuance of a demolition or building permit, a pre-demolition site inspection shall be performed verifying sewer cap and temporary toilet location and the capping of electrical, water and gas service to the property. 2. […]
R113.2 Notice of violation. The building official is authorized to serve a notice of violation or order on the person responsible for the erection, construction, alteration, extension, repair, moving, removal, demolition or occupancy of a building or structure in violation of the provisions of this Code, or in violation of a permit or certificate issued under the provisions of this Code. Such order shall direct the discontinuance of the illegal action or condition and the abatement of the violation.
P103.2.1 New additions, alterations, and change of occupancy. New additions, alterations, and change of occupancy to existing buildings shall comply with the requirements of the California Building Standards Code effective at the time of addition, alteration, or change of occupancy. The requirements shall apply only to and/or within the specific area of the addition, alteration, or change of occupancy. Exceptions: 1. Existing buildings and structures used for emergency housing and emergency housing facilities may not be required to comply with the California Energy Code, as determined by the enforcing agency. 2. […]
R113.3 Prosecution of violation. If the notice of violation is not complied with promptly, the building official is authorized to request the legal counsel of the jurisdiction to institute the appropriate proceeding at law or in equity to restrain, correct or abate such violation, or to require the removal or termination of the unlawful occupancy of the building or structure in violation of the provisions of this Code or of the order or direction made pursuant thereto.
R105.5 Expiration. Every permit issued shall become invalid unless the work on the site authorized by such permit is commenced within 12 months after its issuance, or if the work authorized on the site by such permit is suspended or abandoned for a period of 12 months after the time the work is commenced. The building official is authorized to grant, in writing, one or more extensions of time, for periods not more than 180 days each. The extension shall be requested in writing and justifiable cause demonstrated.
Source: cityofgardena.org
Mapped hazard and district overlays stack on top of the adopted code. These are the overlays recorded for Los Angeles County. They apply by parcel, not jurisdiction-wide, so confirm the parcel before assuming one is in play. Check CAL FIRE's fire hazard severity viewer and FEMA's flood map service.
When one of these applies, the state statute governs over a conflicting local standard. This is the most common reason a local rule someone quotes you turns out not to be enforceable against a project.
State ADU law preempts local zoning that would preclude a conforming ADU/JADU.
Applies when: project includes an ADU or JADU
State Density Bonus Law concessions/waivers override local development standards.
Applies when: project requests a density bonus
SB 9 urban lot split / two-unit ministerial approval preempts conflicting local standards.
Applies when: project is an SB 9 lot split or two-unit development
Gardena enforces 2025 CBC, T24 Pt 2 based on 2024 IBC, the edition adopted statewide in California, amended locally in 2 disciplines (Ord. 1888 (findings: Resolution 6729)).
Yes: building, zoning. For building, the rule is: local text supersedes the state code.
With the city building department that will review the permit. Adoption ordinances are amended on a local schedule, and a set submitted days apart can fall under different editions during a changeover.
Knowing the adopted edition is the easy half. Architechtura reads your drawings, resolves which of these provisions actually apply to the project, and returns the corrections a plan checker would write up, each one cited to the section it came from.
Your first check is free, no card required.
Compiled from published state and municipal adoption ordinances. Local governments amend their codes on their own schedule, and a pending ordinance can change what applies to your permit. Confirm the governing edition with the building department before you submit. This page is reference information, not a code determination.