Monday, December 21, 2020
The Public Works Department will be closed Monday, Dec 28 and Tuesday, Dec 29.
Monday, March 16, 2020
The Public Works Department front counter is currently closed. Please use other means of contact. Learn more »
Our Services
The Department of Public Works serves the unincorporated areas of San Mateo County, providing public services and operating facilities that benefit the community as well as County employees and clients of County agencies.
Our Projects
The Department of Public Works is involved in the planning, design, and construction of infrastructure projects within the unincorporated areas of San Mateo County. Our mission is to provide the public with safe, accessible roads and structures that make their communities more livable.
Contact Us 
Phone
(650) 363-4100
Fax
(650) 361-8220
Main Office
555 County Center
5th Floor
Redwood City, CA 94063
Storm Preparedness
Be prepared for the next storm with tips and emergency phone numbers, and find out where to pick up sandbags.