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

The Colusa County Zoning Code (Article 44-2) sets maximum structure heights in its development-standards tables, which vary by zoning classification. In the residential zones, the maximum structure height is 30 feet in Rural Residential (R-R), Single-Family (R-1), and Two-Family (R-2) zones, and 40 feet in Multiple-Family (R-3) and Apartment-Professional (R-4) zones (Table 44-2.30-2). In the agricultural zones, the maximum height for agricultural structures is 50 feet, with separate accessory agricultural-structure limits. Commercial and industrial zones have their own height limits - several commercial zones allow up to 40 feet, and certain industrial zones allow taller primary structures (for example up to 50 feet, and up to 100 feet in a heavy-industrial classification), with even higher limits for specific accessory structures. Height is measured under the Zoning Code's definition as the vertical distance from the structure's average finished grade - the midpoint between the highest and lowest points where the structure contacts the ground - to the highest point of the structure. Because limits differ by zone and certain features may be exempt, owners should confirm their parcel's classification and the applicable height limit with the Colusa County Planning Division before designing a tall structure.