3 county-level rules, plus city-specific rules for 2 cities in Adams County, Colorado.
Verified from official government sources
In the R-1-C residential district of unincorporated Adams County, principal structures need a 20-foot front setback, 17/5-foot side setbacks, and a 15-foot rear setback. Agricultural (A-1) districts require a 30-foot front setback.
Adams County DSR 3-13 (R-1-C Minimum Front Setback)
The minimum front setback for a principal structure in a Residential-1-C District shall be twenty (20) feet.
In unincorporated Adams County, dwellings in the R-1-C and R-2 districts are capped at 25 feet, and accessory structures at 16 feet. Agricultural (A-1/A-2) dwellings may reach 35 feet, with farm structures up to 70 feet.
Adams County DSR 3-13 (R-1-C Maximum Height, Dwellings)
The maximum height of dwellings in a Residential-1-C District shall be twenty-five (25) feet.
Instead of a flat percentage cap, Adams County limits accessory building coverage: 900 square feet in the R-1-C district (single-family), 450 square feet per unit in R-2, and 80 square feet per unit in R-3/R-4. Accessory buildings can't precede the main dwelling.
Adams County DSR 3-13 (R-1-C Maximum Accessory Building Coverage)
The maximum accessory building coverage in a Residential-1-C District shall be nine hundred (900) square feet. Accessory buildings shall not be constructed prior to the principal dwelling on a lot.
2 cities in Adams County have their own building setbacks & zoning rules. Each link goes to that city's dedicated page with code citations.
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