The county handles building permits for all unincorporated areas, while incorporated cities like Visalia, Tulare, and Porterville operate their own independent building departments. Projects in the county may be subject to additional review for flood zones, wildland-urban interface fire hazard severity zones, and agricultural preserve zoning restrictions.
How this fits with the state
The state authority here is California Contractors State License Board. The county file does not replace that — it adds the permit office, local overlays, and the actual filing path.