Use this directory to reach official city and county services. It separates government administration from project-specific permit assistance.
Which office should you contact?
Have the street address and parcel number ready. Ask whether the property falls under city or county building jurisdiction and whether planning review is needed for the proposed work. Do not assume a county office issues permits for every city inside the county.
State building standards
California Building Standards Commission: code publications provides access to state code resources. Confirm the applicable edition and local amendments with the authority reviewing your project.