Building Setbacks & Zoning in Adams County, CO (2026)

3 county-level rules, plus city-specific rules for 1 city in Adams County, Colorado.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Adams County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Setback Rules

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 CO Building Setback Rules

Some Restrictions

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.

Full ordinance details →Official source ↗

Structure Height Limits

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 CO Building Height Limits

Some Restrictions

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.

Full ordinance details →Official source ↗

Lot Coverage Limits

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 CO Lot & Accessory Building Coverage

Some Restrictions

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.

Full ordinance details →Official source ↗

Building Setbacks & Zoning by City in Adams County

1 cities in Adams County have their own building setbacks & zoning rules. Each link goes to that city's dedicated page with code citations.

WestminsterPop. 116,317

3 verified rules • Lot Coverage Limits, Setback Rules

All Adams County ordinances

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