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 - $113
  • For laterals and other services in the travel way - $338
  • For a main line less than or equal to 100 feet - $1688
  • For a main line greater than 100 feet - $1688 +0.50/foot of trench

Documents

Utility Trench Standard Drawings

... ViewView Utility Trench Standard Drawings

Encroachment Permit Checklist for Utility Trench

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Encroachment Permit with Special Provisions Application Form

... ViewView Encroachment Permit with Special Provisions Application Form