Los Angeles enforces 2025 CBC, T24 Pt 2 based on 2024 IBC with 8 local amendments on top. The amendments are the part that gets sets corrected. The state edition is only the floor. Los Angeles sits in Los Angeles County.
Current edition
2025 Title 24
Prior edition
2022 Title 24
Code authority
Los Angeles Department of Building & Safety (LADBS)
Edition changeover: Projects with a complete application on or before 2025-12-31 may still be reviewed under the 2022 Title 24.
Adopted code and local amendments by discipline
Adopted code editions and local amendments by discipline
Discipline
Adopted code
Local amendment
Building
2025 CBC, T24 Pt 2 based on 2024 IBC
LABC, LAMC Ch. IX, Art. 1Stricter of state or local governs
Residential
2025 CRC, T24 Pt 2.5 based on 2024 IRC
LARC, LAMC Ch. IX, Art. 1.5Stricter of state or local governs
Existing buildings
2025 CEBC, T24 Pt 10 based on 2024 IEBC
n/a
Fire
2025 CFC, T24 Pt 9 based on 2024 IFC
LAFC, LAMC Ch. V, Art. 7Stricter of state or local governs
Electrical
2025 CEC, T24 Pt 3 based on 2023 NEC
LAEC, LAMC Ch. IX, Art. 3Stricter of state or local governs
Mechanical
2025 CMC, T24 Pt 4 based on 2024 UMC
LA Mechanical, LAMC Ch. IX, Art. 5Stricter of state or local governs
Plumbing
2025 CPC, T24 Pt 5 based on 2024 UPC
LAPC, LAMC Ch. IX, Art. 4Stricter of state or local governs
Energy
2025 Energy Code, T24 Pt 6
n/a
Green / sustainability
2025 CALGreen, T24 Pt 11
LA Green Building Code, LAMC Ch. IX, Art. 9Stricter of state or local governs
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
LAMC Chapter I (Planning & Zoning)Local text supersedes the state code
What Los Angeles actually amended
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.
2304.10.2 · Wall sheathing shall not be attached to framing members by adhesives
2304.10.2. Wall sheathing shall not be attached to framing members by adhesives.
Staple fasteners in CBC Table 2304.10.2 shall not be used to resist or transfer
seismic forces in structures assigned to Seismic Design Category D, E, or F.
EXCEPTION: Staples may be used to resist or transfer seismic forces when
the allowable shear values are substantiated by cyclic testing and approved by
the Superintendent of Building.
Sec. 313. Subsection 91.2308.6.9 of Section 91.2308, Division 23, Article 1,
Chapter IX of the Los Angeles Municipal Code is renumbered as Subsection
91.2308.10.9 and amended in its entirety to read as follows:
2. […]
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.
Very High Fire Hazard Severity Zone
Hillside / slope overlay
Historic Preservation Overlay Zone (HPOZ)
Methane hazard zone
Liquefaction hazard zone
California Coastal Zone
FEMA mapped flood hazard area
State law that overrides local zoning here
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.
Gov. Code 66310 et seq.
State ADU law preempts local zoning that would preclude a conforming ADU/JADU.
Applies when: project includes an ADU or JADU
Gov. Code 65915
State Density Bonus Law concessions/waivers override local development standards.
Applies when: project requests a density bonus
Gov. Code 65852.21 / 66411.7
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
Los Angeles enforces 2025 CBC, T24 Pt 2 based on 2024 IBC, the edition adopted statewide in California, amended locally in 8 disciplines.
Does Los Angeles amend the California code?
Yes: building, residential, fire, electrical, mechanical, plumbing, green / sustainability, zoning. For building, the rule is: stricter of state or local governs.
Where do I confirm the code edition for a Los Angeles permit?
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.
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.