[1]Instructions for requesting authorization to Perform work within a County Right-of-Way or County Road (including mailbox installations)
For Encroachment Permit Application and examples, see supporting documents below. When complete, you may mail or drop-off the form and deposit at the either of the Permit Counters located at the Mammoth or Bridgeport Administrative Offices of the county. Incomplete forms and submittals may result in a delay in processing. Please make your check(s) payable to "Mono County". Typically encroachment permits are required for residential driveway construction along county maintained roads.
The Mono County Encroachment Permit has a standard fee of $800. For mailbox installations the fee is $12.00 as of July, 2023.
In addition to the standard fee, a security deposit may be required per County Code. For minor permits, this security deposit covered by the fee, but can be higher depending upon the nature of work being completed. This security deposit is held to repair any damages that may happen to the road. If during final inspection it is determined by staff there are no damages to the county road, then the security deposit will be refunded.
Supporting Documents
Encroachment Permit General Provisions [2] (74 KB) Encroachment Permit Application [3] (86 KB) Example Application [4] (89 KB) Example Driveway Diagrams [5] (514 KB) Cattle Guard Diagram (2007) [6] (83 KB) Cattle Guard Details (2010) [7] (196 KB) Road Design Specifications [8] (7 MB) 