County administration and Planning and Building resources. The application guide distinguishes planning applications from building permits and provides contacts for permit questions.
County of San Mateo
Official administration website: department directories, government services and public information.
Planning and Building
Start here for the relevant building department or permit-service information.
Permit applications
Use this service page for the next step in preparing or managing a project.
Before contacting the department
- Prepare the property address and parcel number.
- Describe the proposed work and the existing use of the property.
- Have any existing permit number, drawings and relevant photographs available.
- Ask which applications, reviews and inspections apply to your scope.
Confirm the correct jurisdiction
City and county departments have different service areas. Confirm that the linked office handles your property before submitting plans or paying fees.