Utility Trench Permit
To dig a utility trench in the right-of-way of San Mateo County's unincorporated districts requires an encroachment permit from the Department of Public Works.
- Behind walkways, paths, sidewalks - $119
- For laterals and other services in the travel way - $358
- For a main line less than or equal to 100 feet - $1791
- For a main line greater than 100 feet - $1791 +0.50/foot of trench