Fences & Retaining Walls

Fence Requirements
Fences three to six feet in height:
  • Do not require a building permit
  • Require a permit from the Planning Department
  • For more information contact the Planning Department at (406) 657-8246

Fences that exceed seven feet in height:
  • Require a building permit
  • Shall be designed for a 105 MPH wind load per the adopted codes
  • A site plan (four copies) is required as part of your submittal and will be reviewed by the Planning Department

Retaining Wall Requirements
Walls of any height that support a surcharge and walls four feet or more in height:
  • Require a building permit
  • Shall be designed in accordance with recognized engineering practices (a stamped design may be required)
  • A site plan (four copies) is required as part of your submittal and will be reviewed by the Planning Department
Walls three feet or more in height:
  • Should be reviewed by the Planning Department for conformance with zoning regulations
  • For more information contact the Planning Department at (406) 657-8246