California permit requirements
Each county and city in California runs its own permit office with its own thresholds, fees, and portals. Use the links below to find the office and requirements for your project.
Building code in California
California Residential Code (CRC), Title 24, Part 2.5. Based on the International Residential Code (IRC), with California amendments.
Administered by California Building Standards Commission (BSC). Official source
Cities and counties may adopt local amendments. Confirm the current edition with the jurisdiction.
Most local permit thresholds derive from this code. See our sources and standards.