Mono County, CA Fence Regulations: Height Limits (2026)

Fence height in unincorporated Mono County is governed by the General Plan Land Use Element development standards, which function as the county's zoning rules for areas outside the Town of Mammoth Lakes. Section 04.160 provides that fences are permitted but not required and shall not exceed 7 feet in height. Where a fence, hedge, or wall is located in any required front yard, it shall not exceed 4 feet in height. The lower front-yard limit protects visibility and neighborhood character. Higher fences may be permitted subject to a use permit, provided they do not obstruct the line of sight from vehicles in roadways or driveways. The county also notes that fencing in sensitive wildlife areas warrants special consideration, and references best practices for wildlife-friendly fence design in the Conservation/Open Space Element. Because Mono County contains extensive wildlife corridors and migration routes, property owners building rural fencing should review those guidelines. These figures are county standards; the Town of Mammoth Lakes, the only incorporated municipality, has its own separate code that does not apply to unincorporated parcels. Always confirm current numbers with the Mono County Community Development Department before building.