Duarte enforces 2025 CBC, T24 Pt 2 based on 2024 IBC with 2 local amendments on top (Ord. 25-05). The amendments are the part that gets sets corrected. The state edition is only the floor. Duarte sits in Los Angeles County.
Current edition
2025 Title 24
Prior edition
2022 Title 24
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
Duarte local amendments, Ord. 25-05Local 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
What Duarte 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.
16.04.180 · California Plumbing Code
16.04.180 California Plumbing Code.
(a)
ADOPTION OF THE CALIFORNIA PLUMBING CODE, 2025 EDITION. The
2025 Edition of the California Plumbing Code (Part 5 of Title 24 of the California
Code of Regulations), based on the 2024 Uniform Plumbing Code as published by
the International Association of Plumbing and Mechanical Officials, is hereby
adopted by reference. A copy of the plumbing code as adopted is on file in the
office of community development and is open to public inspection.”
(b)
16.04.190 · California Residential Code
16.04.190 California Residential Code.
(a)
ADOPTION OF THE CALIFORNIA RESIDENTIAL CODE, 2025 EDITION.
The 2025 Edition of the California Residential Code (Part 2.5 of Title 24 of the
California Code of Regulations) is hereby adopted by reference. A copy of the
residential code as adopted is on file in the office of community development and
is open for public inspection.
(b)
SECTION R403 FOOTINGS. Section R403.1.2, R 403.1.3, R403.1.4, R403.1.5
and R403.1.61 of the CRC are amended to read as follows:
(1) R403.1.2 Continuous Footings in Seismic Design Categories D0, D1 D2,
and E. […]
109.7 · Reinspection Fees. A reinspection fee may be imposed for each inspection
109.7 Reinspection Fees. A reinspection fee may be imposed for each inspection
or reinspection, when such portion of work for which inspection is called is not
complete or when required corrections are not made. This section is not to be
interpreted as requiring reinspection fees the first time a job is rejected for failure
to comply with the requirements of the technical codes, but as a method of
controlling the practice of calling inspections before the job is ready for such
inspection or reinspection. […]
690.13 · Photovoltaic System Disconnecting Means
690.13 Photovoltaic System Disconnecting Means.
Means Shall be provided to disconnect the PV system from all systems
including power systems, energy storage systems, and utilization
equipment and its association premises wiring.
(A) Location
(1) Readily Accessible
Photovoltaic
System
Disconnecting
Means.
Location.
The
PV
disconnecting means shall be installed at a readily accessible location
outside of a building or structure nearest the point of entrance of the system
conductors. A single visible, lockable AC disconnect shall be within 3 feet
of the meter on the exterior of the building. […]
1109.13 · Where release mechanisms of the self-latching device are located
1109.13. Where release mechanisms of the self-latching device are located
less than 60 inches above grade measured on the side of the barrier that faces
away from the swimming pool, the release mechanism must be located on the
pool side of the gate at least three inches below the top of the gate and the gate
barrier may have no opening greater than one-half inch within 18 inches of the
release mechanism.
11. 3109.3.1.8 Dwelling wall as a barrier. Where a wall of a dwelling serves as
part of the barrier, two safety devices must be provided in accordance with
Section 115922 of the California Health and Safety Code. […]
R608.5.4.5 · A minimum of one No. 4 horizontal bar must be installed
R608.5.4.5. A minimum of one No. 4 horizontal bar must be installed
within 12 inches of the top of the stem wall and one No. 4 horizontal bar
must be located 3 to 4 inches from the bottom of the footing.
(5)
Section R403.1.3.2 Masonry stem walls with concrete footings. In Seismic
Design Categories D0, D1, D2, and E, where a masonry stem wall is
supported on a concrete footing, a minimum of one No. 4 vertical bar must
be installed at not more than four feet (4') on center. The vertical bar must
have a standard hook and extend to the bottom of the footing and must
have support and cover as specified in Section R403.1.3.5.3 and extend a
minimum of 14 inches into the stem wall. […]
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
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
Duarte enforces 2025 CBC, T24 Pt 2 based on 2024 IBC, the edition adopted statewide in California, amended locally in 2 disciplines (Ord. 25-05).
Does Duarte amend the California code?
Yes: building, zoning. For building, the rule is: local text supersedes the state code.
Where do I confirm the code edition for a Duarte 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.