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

Building height limits in unincorporated Siskiyou County are established by zoning district in the dimensional standards table, Section 10-6.5501 (Article 55). The table sets a maximum dwelling height of 30 feet in the Res-1 district and 35 feet in the Rural Residential (R-R), Res-2, and agricultural (AG-1, AG-2, TPZ) districts, with accessory structures limited separately (for example, 20 feet in R-R). Other residential and commercial-industrial districts range higher in the table. Article 15 provides the mechanisms to exceed these limits. Under Section 10-6.1505, in any R district where a Use Permit is secured for an increased height limit, the front, side, and rear yards must each be increased by one foot for every one foot by which the building exceeds the specified height limit, so taller buildings require proportionally larger setbacks. Section 10-6.1504 allows certain structures such as commercial silos, monuments, commercial radio towers, water towers, and water tanks to exceed the district height limit with a Use Permit, while utility distribution poles are exempt. Section 10-6.1504.1 lets features such as non-residential chimneys, silos, windmills, flag poles, gas storage holders, and church steeples exceed the limit by Administrative Permit. Because the exact maximum and any permitted exceptions depend on the zoning district and the structure type, owners should verify the height limit for their specific parcel and confirm whether a Use Permit or Administrative Permit applies before designing a taller building.