General building work permit checklist — Orange County, California
Assembled from Orange County’s own published permit rules. Every line below is quoted from a city document and linked to it. Nothing here is generated, estimated, or inferred from another jurisdiction.
Do you need a permit?
Orange County requires a permit for general building work.
OC Development Services adopts the California Building and Residential Codes for unincorporated county territory and does not publish a standalone exempt-work handout on its building and safety pages, so the State exemption list in CBC/CRC Section 105.2 governs by default: detached accessory structures to 120 square feet, fences to 7 feet, retaining walls to 4 feet where they do not support a surcharge, and decks up to 200 square feet that stay within 30 inches of grade and are not attached to a dwelling. The County does publish structural and zoning guidance for walls, noting that a wall treated as non-retaining should not exceed 6 feet in height, and that zoning caps wall and fence height at 3.5 feet within a required front setback and 6 feet within rear or side setbacks, which frequently binds before the building code exemption does. Because the exemption thresholds are not restated in a County handout, confirm your specific case with OC Development Services before relying on them.
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Sources
- building — permit rules ↗verified August 2026
Other permits Orange County publishes rules for
Listed because the city publishes a separate rule for each type — not because this project necessarily triggers one. Whether it does depends on your scope of work.
- Deck permit checklist
- Fence permit checklist
- Shed permit checklist
- Water heater permit checklist
- Re-roof permit checklist
- Retaining wall permit checklist
- Electrical work permit checklist
BuildSpec is a reference, not the authority having jurisdiction. Confirm requirements with Orange County before you build.