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Welcome to the San Mateo County Online Permit Center

This portal provides public access to Planning and Building permits for unincorporated San Mateo County areas. Log in or register for your free account to apply for building permits and limited planning permits, or select from the search options below.

Please review the Permit Center User Guide for instructions on creating a user account, submitting permit applications, paying invoiced fees, uploading documents, and obtaining permit status updates.

Services available without registering for an account:

• Past permit search (available from 1990). Includes planning and building permits, stop work notices and violations.

Registered Users Only:

For assistance, view our permit application instructions or contact the Building Counter at (650) 599-7310.

Prior to applying for permits, verify property zoning and jurisdiction in the unincorporated County area.

You can now apply for the following Planning permits online:
• Density/Slope Analysis
• General Plan Conformity
• Planning Amendment
• Pre-Application
• Short-Term Rental
• Williamson Act/Ag Preservation