Decks not more than 30 inches above grade are exempt from building permits in Orange County. Elevated decks, covered patios, and attached patio covers require permits. At-grade patios generally do not require permits.
Under the California Building Code adopted by Orange County, decks not more than 30 inches above adjacent grade and not over a basement are exempt from building permits. Elevated decks require permits with structural plans, guardrails (42 inches per California code), and inspections. Covered patios and patio covers attached to the house require building permits as they are considered room additions. Freestanding shade structures under 120 sq ft with no utilities may be exempt. All outdoor structures must comply with setback requirements. At-grade patios (concrete, pavers) do not typically require permits unless they affect drainage. The county's ePermit system accepts applications online for many project types.
Unpermitted elevated decks or patio covers may result in stop-work orders, double permit fees, and required engineering review.
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