Los Angeles is the second-largest city in the United States at about three point nine million residents, and its Department of Building and Safety is one of the largest municipal building departments in the country. Permits are issued under the Los Angeles Building Code — Title 24 as amended by the city — through counter, online and electronic-plan-check paths keyed to project complexity.
This guide covers LADBS, the permit and plan-check paths, the Los Angeles Building Code, and the hillside, grading and seismic layers that shape many city projects.
This guide covers work inside the City of Los Angeles limits. Unincorporated LA County and neighbouring cities are separate authorities.
The City of Los Angeles runs its own Department of Building and Safety, distinct from LA County. Work inside the city files with LADBS under the Los Angeles Building Code, not with the county. LADBS offers express permits for simpler work and full plan check for the rest — matching the path to the scope up front saves the most time.
What requires a building permit in Los Angeles?
California builds on a single statewide code — the California Building Standards Code, known as Title 24 — adopted on a three-year cycle by the California Building Standards Commission. The 2025 edition took effect on January 1, 2026 and governs statewide. Cities and counties enforce Title 24 and may adopt local amendments, but an amendment must be filed with the state and may only be equal to or more restrictive than the state code, justified by local climatic, geologic or topographic conditions. So the first question in Los Angeles is which authority has jurisdiction — the city on incorporated parcels, the county in unincorporated territory — and what local amendments sit on top of Title 24.
Permit required
- New commercial, multi-family and residential construction, additions and change of occupancy
- Structural alterations, load-bearing changes, foundations, decks and retaining walls
- Electrical work — services, panels, circuits, solar and EV charging — under the California Electrical Code
- Plumbing under the California Plumbing Code, tied to a licensed contractor
- Mechanical and HVAC change-outs, and work affecting the Title 24 energy envelope
- Re-roofing above the exempt scope, pools, signs, and demolition
Often exempt
- Minor repairs and maintenance replacing materials in kind
- Small accessory structures below the local threshold, where zoning allows
- Painting, flooring, cabinetry and other finish work
- Like-for-like fixture or appliance swaps with no alteration to wiring or piping
Local amendments and thresholds differ from one jurisdiction to the next, so an exempt list from a neighbouring city is not reliable — a project waved through in one place needs a full permit set in the next. An exemption from a building permit is never an exemption from zoning, the statewide energy or green-building codes, or an electrical or plumbing permit. Confirm scope with LADBS before work starts.
The statewide layers that apply everywhere
Several parts of Title 24 apply on top of the base building code and routinely catch projects owners assume are exempt: the California Energy Code (Part 6), among the strictest in the nation; CALGreen (Part 11), California’s mandatory statewide green-building code; and the accessibility provisions in Chapters 11A and 11B. Seismic design is built into the code statewide, and in fire-prone areas the wildland-urban-interface rules of Chapter 7A and Cal Fire defensible-space requirements add a further layer. In the City of Los Angeles, LADBS administers the Los Angeles Building Code — Title 24 with city amendments — and layers grading, hillside and mandatory seismic-retrofit rules onto many older and hillside properties.
Who handles permitting in Los Angeles?
The Department of Building and Safety handles plan check, permit issuance and inspections for the City of Los Angeles under the Los Angeles Building Code.
| Detail | Information |
|---|---|
| Authority | Los Angeles Department of Building and Safety (LADBS) |
| Serves | The City of Los Angeles limits |
| Phone | 213-473-3231 |
| Paths | Express permits, online, and full plan check |
| Code | Los Angeles Building Code (Title 24 amended) |
| Licensing | State CSLB license; no local registration |
| Layers | Grading, hillside and seismic-retrofit review |
| Records | LADBS holds city permit and inspection records |
LADBS runs plan check, permit issuance and inspections for the City of Los Angeles through its development-services offices and online systems. Simpler residential and trade work often qualifies for an express or online permit, while additions, new construction and commercial work go through full plan check.
Confirm the parcel is inside the city first; the surrounding unincorporated areas and neighbouring cities file with different authorities under their own codes.
Permit types
Residential permits
Residential work inside the city is permitted and inspected by LADBS under the Los Angeles Building Code. Additions, decks, pools, solar and EV chargers need permits, and hillside and grading rules apply across much of the city. A CSLB-licensed contractor in the right classification pulls the trade permits.
How California contractor credentials work
California licenses contractors statewide through the Contractors State License Board, not locally. The CSLB issues three license types — Class A for general engineering, Class B for general building, and the Class C specialty classifications for individual trades — and a contractor must hold the classification that matches the work. A license is required for any project valued at one thousand dollars or more in combined labour and materials, and, in practice, for any work that requires a permit regardless of value.
In California the license lives with the state, not the city. The same CSLB license is recognised in every jurisdiction, so there is no separate local contractor registration to secure before pulling a permit. What the permitting authority does check is that the license number is active and carries the right classification for the scope, along with workers’ compensation coverage. Confirm the classification matches before filing.
Commercial permits
Commercial and multi-family work goes through LADBS plan check against the California Building Code, the Energy Code and CALGreen, with city amendments. It requires CSLB-licensed contractors and drawings stamped by a California-licensed architect or engineer, and larger projects trigger additional city review.
Licenses, trade classifications and design professionals
Practically, three credential layers appear on California projects: a CSLB license in the correct classification for the contractor pulling the permit; the specialty C-classifications for the electrical, plumbing and mechanical trades; and, on commercial and larger residential work, drawings stamped by a California-licensed architect or engineer. Confirm what LADBS requires for the specific building before filing.
Los Angeles permit costs and fees
Budget the LADBS permit and plan-check fees, separate trade permits, the state Building Standards and seismic surcharges, and any grading or development fees. Fees are valuation-based and set by the city; confirm the schedule in force on your filing date.
| Fee component | How it works |
|---|---|
| Building permit | Based on project valuation or square footage; set by the local schedule |
| Plan check | A percentage of the permit fee or a flat charge, at submittal |
| Trade permits | Separate electrical, plumbing and mechanical fees |
| State surcharges | Building Standards and seismic (SMIP) fees collected with the permit |
| Impact and school fees | Development impact and school-district fees in growth areas |
| Re-inspections and revisions | Additional fees for failed inspections, revisions and expired permits |
California layers two uniform state surcharges — the Building Standards Administration fee and the Strong Motion Instrumentation seismic fee — on top of the local charges, so they appear on permits everywhere. The building and plan-check fees themselves are local and change, and California law limits them to the reasonable cost of providing the service, so a figure from a neighbouring city is not reliable — ask LADBS for the schedule in force on your filing date.
Need a real number for a specific Los Angeles project? Send us the scope, address and valuation and we will identify the authority having jurisdiction, the code edition in force and the fee categories that will apply.
Trade permits and who may pull them
Trade permits are separate from the building permit and, on projects that require one, generally cannot be issued until the building permit is in place. Each trade follows its own part of Title 24 — the California Electrical, Plumbing and Mechanical Codes — and is tied to a contractor holding the matching CSLB specialty classification, the same license statewide.
California runs the trades on one statewide license. Electrical work is tied to a C-10 contractor, plumbing to a C-36, and heating and air to a C-20, each licensed by the CSLB rather than the city, so the credential travels with the contractor from one jurisdiction to the next. What changes locally is the permit itself and any local amendments — confirm both with the authority that issues it.
- Electrical work follows the California Electrical Code and a C-10 electrical contractor.
- Plumbing work follows the California Plumbing Code and a C-36 plumbing contractor.
- Mechanical work follows the California Mechanical and Energy codes and a C-20 HVAC contractor.
Permit required
- Service installations, panel upgrades, new circuits, solar PV and EV chargers
- New plumbing, repipes, water heater change-outs, fixtures, backflow and gas piping
- HVAC installation and change-out, ductwork, venting and commercial kitchen exhaust
- Sprinkler, standpipe and fire alarm work on commercial and multi-family structures
Typically exempt
- Replacing a fixture, switch, receptacle or light with no alteration to wiring or piping
- Clearing a stoppage without replacing or rearranging concealed piping
- Filter, thermostat and routine component service
- Like-for-like appliance repair that does not alter the connection
How to apply for a Los Angeles building permit
Only work within the City of Los Angeles limits files with LADBS.
Express and online permits fit simpler work; the rest goes to full plan check.
California licenses contractors statewide; match the classification to the scope.
Many city parcels carry grading, hillside or retrofit requirements.
File the plan set with LADBS and pay the review fees.
Issue the permit and book inspections through LADBS.
Review, corrections and what actually causes delay
In California, the first cause of delay is uncertainty over jurisdiction — filing with the county when a city should have it, or missing a local amendment on top of Title 24. After that come Title 24 energy and CALGreen documentation, a CSLB classification that does not match the scope, and, in fire or coastal areas, defensible-space or coastal-zone requirements that were not addressed up front. Build the plan-check time into the schedule and confirm the checklist with LADBS before filing.
Approvals do not stay live indefinitely. A California building permit carries a validity period and can expire if work does not start or stalls between inspections. On phased or financed work, keep the permit active with periodic progress inspections and confirm the expiry window before it passes.
Inspections in Los Angeles
Where a permit is required, standard checkpoints include footing and foundation, framing, rough-in electrical, plumbing and mechanical, insulation and Title 24 energy, CALGreen measures, fire systems on commercial work, and final, with a certificate of occupancy before use. LADBS assigns the inspector and the construction stages that must be inspected when the permit issues.
California inspections are keyed to the code editions in force when the permit issued, so the approved plans and any energy and green-building documentation need to be on site for the inspector to check against. Confirm the notice LADBS needs and schedule around its inspection windows.
Do not cover work before the required inspection has been approved. Keep the issued permit, the approved plans, product listings, Title 24 energy documentation and your correction responses available on site.
Los Angeles permit search and official resources
Permit records in California sit with the local authority that issued them. Where the Los Angeles Department of Building and Safety is the authority for the City of Los Angeles limits, it holds the building permit, the inspection history and the certificate of occupancy. If you are buying, refinancing or renovating, confirm that past work was permitted rather than assuming it was — and confirm the code edition that was in force.
Confirm the authority having jurisdiction and the local amendments first. California enforces one statewide code, Title 24, but each city and county adds its own amendments and fee schedule, so the requirements that apply vary by parcel. Confirm current requirements, fees and review turnaround for your filing date.
These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.
- Los Angeles Department of Building and Safety
- California Building Standards Commission (Title 24)
- Contractors State License Board (CSLB)
- California Energy Commission (Energy Code)
- California Department of Housing and Community Development
Frequently asked questions
Who issues building permits in the City of Los Angeles?
The Los Angeles Department of Building and Safety (LADBS) issues permits for work inside the city under the Los Angeles Building Code; the county and neighbouring cities are separate authorities.
Can I get a permit without full plan check?
Often yes for simpler residential and trade work, through an express or online permit; additions, new construction and commercial work go through full plan check.
Do I need a local contractor registration?
No. California licenses contractors statewide through the CSLB; there is no separate city registration, but the license must be active and correctly classified.
Does my project need hillside or grading review?
Many Los Angeles parcels do, especially in the hills; confirm grading and hillside requirements with LADBS before you file.
Are there seismic-retrofit requirements?
Yes for certain older building types under the city’s mandatory retrofit programs; confirm whether your building is on a retrofit list.
How do I run a Los Angeles permit search?
LADBS holds the city’s permit and inspection records; confirm past work was permitted before buying, refinancing or renovating.
Simplify Los Angeles permitting with Alliance Permitting
The City of Los Angeles rewards matching the permit path to the scope and clearing the hillside, grading and seismic layers early. On one of the busiest counters in the country, a complete package is the difference between weeks and months.
Trusted by leading builders, developers, and national contractors — 22 years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Los Angeles because the work is done by people who have stood at the counter:
- We confirm the parcel is inside the city and route it to LADBS.
- We match the work to the express, online or plan-check path.
- We confirm the CSLB classification matches the scope.
- We address hillside, grading and seismic requirements up front.
- We submit complete plans and track issuance and inspections.
Alliance Permitting is a permit documentation and submission company. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.
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Let Alliance prepare, file, and track your Los Angeles permits while your crew stays on the job.
More California permitting guides
This guide is provided by Alliance Permitting for general information about Los Angeles permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.