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Zoning & building permits

Look up a property’s zoning and find the right permit office.

Apply for a building permitLook up zoning maps

Before you start

  • Start with the jurisdiction of the property. County permit offices may serve only unincorporated areas.
  • Use the official map and confirm project requirements with the planning or building office.

1 guide with reviewed service links · San Mateo

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County government · San Mateo

Planning & Building

Building & Safety

County building permit information (opens in a new tab)Official instructions

Official county building permit guidance. Service boundaries and project requirements must be confirmed with the department.

Source checked October 14, 2026

San Mateo County · San Mateo — building permit department (opens in a new tab)

Official page text containing: Planning and Building

ment of Housing) Human Resources Department Human Services Agency Libraries (San Mateo County Library) Parks Department Planning and Building Probation Public Safety Communications Public Works Revenue Services SamCERA (Retirement) San Mateo County Fire Sheriff's Office Sustainability Department Tax Collector Technology Services Department Treasurer About SMC Fast Facts Finding County Center Contact Us Department Directory Maps & Data County Budget County GIS & Maps Open Data Emergency Services E

Saved evidence: 99e6105a669d05d3 · Agent source review

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