About Us
We plan and regulate land use and development within the unincorporated areas of the County so that diverse and livable communities can thrive.
Contact Us
Planning Counter
(650) 363-1825
Building Inspection Section
(650) 599-7311
(Closed from 12pm–2pm)
Code Compliance
(650) 363-4825
M-F 7:30 am to 5:00 pm
Did you know? There are new penalty fees of $2,500 to $10,000 per tree for the unauthorized removal of Significant and Heritage Trees? LEARN MORE »
Permit Center
What's the status of my permit? What's the permit history (since 1999) of my property? Where can I apply for an Over-the-Counter permit (log-in required)?