Mono County, CA Building Setbacks & Zoning: Setback Rules (2026)

Minimum yard setbacks in unincorporated Mono County are not a single number; they depend on the land use designation assigned to the parcel, with standards set in the General Plan Land Use Element (Chapter 04 and the per-designation summary sheets). Larger-lot rural designations require deeper yards. Rural Residential (RR), a minimum 1-acre designation, requires a 50-foot front yard and 30-foot side and rear yards. Estate Residential (ER), also minimum 1 acre, likewise requires a 50-foot front and 30-foot side and rear yards. By contrast, the Rural Mobile Home (RMH) designation requires a 20-foot front yard and 10-foot side and rear yards. Some side and rear standards are noted as reflecting state-law minimums. Additional placement rules apply: any proposed structure, including associated impervious surfaces, must be located a minimum of 30 feet from the top of the bank of any lake or major or minor stream (Section 04.120). Because each designation differs, owners must confirm their parcel's specific designation and its required yards rather than assume a default. These are county standards for unincorporated land; the Town of Mammoth Lakes applies its own setbacks within town limits.