Contact Us

Email Us

We are highly interested in your feedback and in answering any questions you might have. Please email us at plngbldg@co.sanmateo.ca.us

Or, if you'd rather speak to someone in our office in person, you can phone (650) 363-4161. More numbers to various Planning and Building Department can be found on our General Information page. Or, if you'd rather write a letter, you can mail our office at San Mateo County Department of San Mateo County Planning & Building Department, 455 County Center, 2'nd Floor, Redwood City, CA 94063.