Anaheim, CA Permit Requirements: Deck & Patio Permits (2026)

Under the California Residential Code adopted by Anaheim, a deck that is 30 inches or less above grade measured at any point within 36 inches horizontally and serves a single detached dwelling is exempt from a building permit, provided it does not support a roof. Decks higher than 30 inches, or any deck attached to the house regardless of height, require a building permit with engineered plans showing footing depth (typically 12 to 18 inches for Anaheim soils), ledger attachment detail, joist sizing, and guardrail design. Guardrails are required for surfaces more than 30 inches above grade, must be at least 36 inches tall for residential decks (42 inches for commercial), and spindles must be spaced to reject a 4-inch sphere. Attached patio covers, solid or open lattice, require permits and must meet California Residential Code Appendix H including minimum 7-foot clearance, approved roofing materials, and attachment to structure with flashing. Freestanding patio covers under 120 square feet and not mechanically anchored may be permit-exempt but must still meet setback and lot coverage zoning rules. Concrete slab patios at grade without drainage impact generally do not need a permit, but adding a hot tub, outdoor kitchen with gas or plumbing, or enclosing a patio with walls all trigger permits. Inspections typically include footing, framing, and final.