Do I Need a Permit to Build a Deck in California?
Deck permit requirements. When you need a permit, footing depth, guard rail rules, and inspection stages.
Yes — unless it's a small ground-level platform under 200 sq ft.
When a Permit Is Required
Most jurisdictions require a deck permit for: decks over 200 square feet, decks more than 30 inches above grade, any deck attached to the house via a ledger board, and decks with structural modifications. A small freestanding platform under 200 sq ft and under 30 inches high may be exempt — but check with your city.
Footings and Frost Line
Deck footings must extend below the local frost line — the required depth varies by climate and elevation, so confirm the depth your city requires. This is one of the most common inspection points. Footings that are too shallow will fail inspection.
Guards and Railings
Guards are required when the deck surface is 30 inches or more above grade. Minimum guard height is 36 inches for residential decks (42 inches for commercial) under the IRC. Baluster spacing must be less than 4 inches — the classic 'sphere test' (a 4-inch sphere should not pass through).
Ledger Board Attachment
The ledger board (where the deck attaches to the house) is the #1 failure point for decks. Inspectors check that ledger boards are attached with lag screws or through-bolts — nails are never acceptable. Proper flashing above the ledger is also required to prevent water damage.
Most useful decks need a permit. Plan for three inspections (footings, framing, final) and confirm your local frost-line footing depth.
Permit fees by city in California
Verified from each city’s published fee schedule. Where a city has no separate fee listed for this project, open the city page for the current requirements and amount.
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| Permit fee | Source | |
|---|---|---|
| Fresno | Due at permit issuanceVerifiedvia Residential Building Permit | Residential Building Permit → |
| Long Beach | Per the City's published fee schedulesVerifiedvia Building Permit | Building Permit → |
| Oakland | NOT PUBLISHED on the pages readVerifiedvia Residential Building Combination Permit (RBC) | Residential Building Combination Permit (RBC) → |
| Sacramento | Published separately in the City's building fee pagesVerifiedvia Residential Building Permit | Residential Building Permit → |
| San Diego | $737.00Verifiedvia Residential Building Permit (Combination Building - Single Dwelling Units, ADUs and Duplexes) | Residential Building Permit (Combination Building - Single Dwelling Units, ADUs and Duplexes) → |
| San Jose | NOT PUBLISHED on the permit service pagesVerifiedvia Residential Building Permit (Standard Plan Review Service) | Residential Building Permit (Standard Plan Review Service) → |