Fees
Estimated city fees
Baseline for a simple permitted deck: $400–$900 estimated city fees (plan check + permit) for a typical permitted deck
| Fee | Amount | Notes |
|---|---|---|
| Plan check fee | $250–$600 (estimated) | LADBS calculates plan check fees on the estimated project valuation using the current fee schedule. A deck valued at $12,000–$30,000 typically falls in this range. Verify at ladbs.org/permit-fee-calculator. |
| Building permit / issuance fee | $150–$350 (estimated) | Issued separately after plan check approval. Combined plan check plus permit for a typical residential deck runs $400–$900. |
| SMIP surcharge | 0.013% of permit valuation | California Strong Motion Instrumentation Program surcharge is assessed on all building permits statewide. |
| CalGreen inspections | Included in permit | California Green Building Standards Code (Part 11 of CBC) inspections are bundled into the standard inspection sequence. |
Documents
Required documents
- Completed LADBS building permit application, submitted through the LA Express Permit or Standard Plan Check portal at ladbs.org.
- Site plan drawn to scale showing property lines, setbacks, existing structures, and proposed deck footprint and location.
- Floor plan and elevations of the proposed deck with dimensions, height above grade, and railing details.
- Structural drawings including footing design (size, depth, and reinforcement), post and beam schedule, joist layout, ledger connection details, and guardrail/stair design.
- Seismic design calculations or prescriptive compliance worksheet for SDC D per CRC Chapter 3 / CBC Chapter 16.
- Soils report if the project is on a hillside lot or in a designated landslide or liquefaction zone.
- Zoning clearance confirming the deck meets required yard setbacks for the applicable zoning district.
- Proof of workers' compensation insurance if a licensed contractor is performing the work.
Timeline
Typical timing
- Plan review
- 15–25 business days (standard); same-day for qualifying LA Express Permit submissions
- Total cycle
- 5–8 weeks from application to final inspection for standard submittals
Hillside projects, soils reports, and correction rounds extend the timeline. LADBS workload fluctuates; check current wait times at ladbs.org.
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Process
How the permit process works
- Verify zoning and seismic zone before designing Use LADBS Zoning Information and Map Access System (ZIMAS) at zimas.lacity.org to confirm setbacks, zoning district, and any special overlay conditions (hillside, fault zone, liquefaction). Los Angeles is uniformly in Seismic Design Category D, so all deck designs must include seismic load provisions.
- Prepare plans with a licensed designer or use standard plans LADBS offers pre-approved Standard Plan Sets for common wood-frame decks. If your deck qualifies, using a Standard Plan significantly reduces plan check time. Otherwise, prepare site plan, floor plan, elevations, structural drawings, and seismic details per CBC requirements.
- Submit through LADBS online or in person Apply through the LADBS online portal at ladbs.org/permits. For projects meeting LA Express Permit criteria (simple, prescriptive-compliant decks), same-day over-the-counter approval may be available. Standard plan check applications are submitted and queued for review.
- Complete plan check and address corrections LADBS plan checkers review for CBC structural compliance, seismic load path, setbacks, and CalGreen requirements. Correction letters (PCCs) identify items to revise. Resubmit corrected plans through the portal.
- Pay fees and receive the permit After plan check approval, pay the remaining permit and issuance fees. Print and keep a copy of the permit on-site throughout construction.
- Schedule inspections with LADBS Request inspections through the LADBS inspection scheduling system at ladbs.org. Standard deck inspections include: footing (before pour), framing (before decking), and final. Seismic hold-down hardware is verified at the framing inspection.
- Pass final inspection and close the permit After LADBS signs off on the final inspection, the permit is closed. The approved, inspected deck is on record with the City of Los Angeles, which matters for homeowners insurance, refinancing, and future sales.
Code basis
What Los Angeles reviews against
2022 California Residential Code (CRC) / California Building Code (CBC) Title 24, as adopted under Los Angeles Municipal Code (LAMC) Title 91.
If you skip the permit
What can go wrong
- LADBS can issue a stop-work order (red-tag) the moment unpermitted construction is discovered, halting all work immediately.
- Code enforcement can require you to demolish or significantly modify an unpermitted deck to achieve compliance.
- Los Angeles requires a Certificate of Compliance (Code Enforcement) before a non-permitted structure can be brought into compliance — a process that can cost more than the original permit would have.
- Seismic and structural deficiencies in an unpermitted deck pose life-safety risk that goes undetected without LADBS inspections.
- Unpermitted work can void homeowners insurance coverage and must be disclosed in any real estate transaction under California law.
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FAQ
Common Los Angeles deck permit questions
Do I need a permit to build a deck in Los Angeles?
Yes, in virtually all cases. Any deck attached to the house requires a permit. Freestanding decks more than 30 inches above grade also require a permit. Unlike some jurisdictions, Los Angeles does not have a meaningful freestanding-deck exemption for typical backyard projects. LAMC Title 91 and the California Residential Code govern residential deck construction in LA.
What makes Los Angeles deck permits different from other cities?
Los Angeles is in Seismic Design Category D, the highest residential seismic hazard classification. Every permitted deck must be designed for lateral seismic forces, including proper hold-down hardware at ledger-to-house connections and engineered footings. This makes LA deck design more technically demanding than jurisdictions using the base IRC without seismic amendments.
How much does an LA deck permit cost?
LADBS charges plan check fees plus a building permit/issuance fee, both based on the estimated project valuation. For a typical residential deck valued at $15,000–$25,000, expect $400–$900 in combined city fees. Use the LADBS fee calculator at ladbs.org to estimate your specific project. A SMIP seismic surcharge (0.013% of valuation) also applies statewide.
What is an LA Express Permit?
LADBS offers a same-day over-the-counter review for simple projects that comply prescriptively with CRC provisions, including certain wood-frame decks. If your deck uses standard span tables and does not require a soils report or variance, ask LADBS if it qualifies for Express Permit processing — it can save weeks on plan check time.
Do I need a soils report for a deck in LA?
A soils report is typically required for hillside lots, properties in designated liquefaction or landslide zones, or projects with deep or complex foundations. Check your property's geotechnical hazard designation in ZIMAS before submitting to determine whether a soils investigation is required.
What happens if I build a deck without a permit in LA?
LADBS can issue a stop-work order and require corrections or demolition. Obtaining a retroactive permit for unpermitted work in LA is possible through the LADBS Code Correction process, but it is more expensive, slower, and requires invasive inspections to verify structural compliance. California real estate law also requires disclosure of unpermitted work.
Sources
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Disclaimer: This page is informational, not legal advice. Permit rules, fees, and processes change. Verify your project with Los Angeles permitting staff before building.