Above-ground pools over 18 inches deep in unincorporated San Mateo County require a building permit. All permanent pools must comply with California Pool Safety Act fencing requirements. Consult County Building for specific situations.
San Mateo County requires building permits for above-ground pools deeper than 18 inches. All permanent above-ground pools must comply with California Swimming Pool Safety Act fencing requirements (60-inch barrier). Temporary inflatable pools under 18 inches deep are generally exempt from permit requirements. Contact County Planning & Building at (650) 363-4161 for guidance on specific pool installations.
Unpermitted pools: removal or retroactive permit with double fees. Safety violations: immediate correction required. Fines $100 to $500.
San Mateo County, CA
Amplified music in unincorporated San Mateo County is regulated by County Code Chapter 4.88 Noise Control, which caps exterior noise at 55-75 dBA daytime and...
San Mateo County, CA
Unincorporated San Mateo County enforces CVC §22651(k) for vehicles on public streets (72 hours) and Ordinance Code Chapter 4.48 for inoperable vehicles on p...
San Mateo County, CA
Unincorporated San Mateo County has no general overnight parking ban on most streets. Specific residential neighborhoods may have permit parking. California ...
San Mateo County, CA
Unincorporated San Mateo County enforces California Swimming Pool Safety Act (H&S Code §115920-115929) and CBC Chapter 31B. Minimum 60-inch barrier, self-clo...
San Mateo County, CA
Unincorporated San Mateo County requires building permits for retaining walls over 4 feet measured from bottom of footing to top of wall, per California Buil...
San Mateo County, CA
Unincorporated San Mateo County allows backyard chickens on residential parcels of at least 2,500 sq ft under the County Zoning Regulations. 2,500 to 7,500 s...
See how San Mateo County's above-ground pools rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.