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Building Inspection Section


Building Inspection Section

San Mateo County Planning and Building Department

Administers all building codes required for new construction, remodeling and termite work.


Administers all building codes such as the 2010 California Building, Electrical, Plumbing, Mechanical Energy, and Fire Code. Issues permits to those doing the above kind of work either in new construction, remodeling, additions or modifications and termite work. Inspections are made during the progress of the work to make sure it conforms to the applicable code. Permits for such works as furnace replacement, termite reports, electrical service change by a licensed electrical contractor and some gas, water or sewer line repair can be approved via mail-in or FAX communication. Phone the office for details. .


Public Transit:

SAMTRANS stops within 1 block. CALTRAIN stops within 2 blocks.
455 County Center, 2nd Floor, Redwood City, CA 94063 37.4889287 -122.2307333 Government

Service Options

Languages Spoken:

  • Cantonese
  • Spanish

Accessibility Options:

  • Disabled Parking
  • Disabled Restroom
  • Elevator
  • Ramp
  • Wheelchair



Fees for permits vary according to the work done. Cash, checks and credit cards accepted.


International Code Council (ICC) Certification for inspectors

How to Apply:

Walk in or apply by phone for appointment if project is complex. Mail in and fax is permitted for some projects. Legal document necessary for application (if not owner or contractor).

Service Wait Estimate:

1-2 months for plan check service for large project. Express service available for minor permits (24-48 hours). No wait for over the counter kit/bath remodel-permits with no structural changes.

Service Areas:

  • Unincorporated San Mateo County