Oakland, CA Accessory Structures: Shed & Carport Rules (2026)

18 of the Oakland Fire Code amendments targets the accessory structures most homeowners build without thinking about fire protection: carports and attached garages serving a Group R-3 house or duplex. Where the base California Fire Code carries an exception that can excuse small private garages from sprinkler coverage, Oakland's local amendment deletes that exception outright, the text ends with "Deleted: Exception", so there is no size or use carve-out left for a carport or attached garage once one is built accessory to a house. The sprinkler system protecting that carport or garage must be a genuine automatic residential system, either built to § R313 of the California Residential Code or to the NFPA 13-D standard, using residential or quick-response heads.

05 gallons per minute per square foot across the garage or carport area, though the calculation only has to assume two sprinkler heads operating at once no matter how large the space is. The section also settles a common design dispute by declaring that garage doors are not obstructions for sprinkler-placement purposes, so a contractor can't argue a roll-up door blocks proper head coverage. 05 gpm/ft², two-head calculation) those garage and carport heads must meet.