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Welcome to the San Mateo County Planning and Building Department Online Permit Center

Check the status of pending projects or past permits for your property. For pending projects, you can find the status of your application, track staff and review agency comments, and track review agency approvals. For past permits, you can find a listing and description of all permit applications since 1999, permit status, and violations.

Searching for Projects and Permits.  No login required.
Permit Number: Use ALL CAPS with no spaces (e.g., PLNXXXX-XXXXX). Do not fill out any other fields.
Address: Use only street number and name.  Leave out road, avenue, etc.
Parcel Number: Leave out the hyphens (e.g., 0XX-XXX-XX0).

When reading case notes, click on arrows to expand entries under headers.
For questions regarding permits that aren't available online call the Building Inspection Section, (650) 599-7311, or go to 455 County Center, 2nd Floor, Redwood City.

Applying for Permits.  Login required.
To apply for an over-the-counter Building Permit, please login or register for a free account in the box to the right.

The following Building Permits are offered online: electrical service, gas line, HVAC, reroof, sewer line, siding or stucco, water heater, water line, and windows or doors (size for size), photovoltaic, solar pool heating, solar water heating.  Please note that some permits may require additional review by the Planning Department prior to issuance.

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