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.

Permit Fees

  • Behind walkways, paths, sidewalks - $123
  • For laterals and other services in the travel way - $369
  • For a main line less than or equal to 100 feet - $1845
  • For a main line greater than 100 feet - $1845 +0.50/foot of trench

Documents

Utility Trench Standard Drawings

... View moreView Utility Trench Standard Drawings

Encroachment Permit Checklist for Utility Trench

... View moreView Encroachment Permit Checklist for Utility Trench

Encroachment Permit with Special Provisions Application Form

... View moreView Encroachment Permit with Special Provisions Application Form