Hours of Operation  Effective October 1, 2015

In an effort to provide all our customers with better service, the Department is modifying its hours as shown below.  Please help us to help you by adhering to these hours.

Counter Hours - Walk-ins 
  • Monday thru Friday 7:30 AM to 9:30 AM - Walk up Encroachment Permits only. 
  • Monday and Wednesday 7:30 AM to 9:30 AM – Storm drainage questions only.
By Appointment - Anytime

Questions about encroachment and drainage issues. 

Please send an email to DPWpermit@smcgov.org with your preferred times and we can schedule an appointment for the first available slot. 

Sewer and water please contact the service provider.

Expedited service by email - Anytime

Please send completed applications for encroachments and other permits to DPWpermit@smcgov.org.

Attach a completed application and attach plans for the proposed work, you may pay by credit card for a service charge and we will email you the permit, or drop off the check for the correct amount when you pick up the permit during counter hours as shown above.

TIP – We only handle permits for the unincorporated communities please see our map of San Mateo County unincorporated areasEnter the site address in the Map application. The Unincorporated Communities can be highlighted by clicking the appropriate box in the legend.