Lassen County, CA Building Setbacks & Zoning: Structure Height Limits (2026)

Lassen County sets structure height limits by zoning district in its Title 18 zoning ordinance. In the R-1 single-family residential district, the main building height limit is twenty-five feet, but upon securing design review approval the main building may be constructed up to thirty-five feet. Accessory buildings in R-1 are limited to twenty feet, or the height of the main building, whichever is lower, unless approved by the architectural review committee, in which case accessory buildings up to thirty-five feet may be allowed. These ceilings are separate from the fence-height limits in the General Provisions (three feet in required front yards, six feet in side and rear yards, up to eight feet between side or rear yards with air circulation). Height limits in agricultural and other districts can differ, and special provisions or exceptions in Title 18 may allow certain features to exceed the base height. Because the exact ceiling depends on the zoning district and on whether design review or architectural review approval is obtained, owners should confirm the limit for their parcel with Lassen County Planning and Building Services (221 S. Roop St., Susanville, 530-251-8333) before designing a tall structure. These standards govern unincorporated areas; the City of Susanville applies its own height limits.