Colorado ADU Pro

ADU Area Guides: Denver Metro

Local ADU expertise in every Denver metro city — zoning rules, permits, and rental income data.

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Denver

Citywide ADU allowance across all residential zones. Specific form standards and rear-35% lot placement rule.

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Aurora

Colorado’s third-largest city updating zoning to comply with HB 24-1152 and expanding eligible ADU zones.

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Arvada

Large population, older homes with big lots. One of the easiest suburban markets to get ADU approval.

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Lakewood

Jefferson County’s largest city. Hilly terrain creates strong walk-out basement ADU opportunities.

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Westminster

Growing Adams/Jefferson County suburb with strong demand for flexible and multigenerational housing.

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Thornton

North Denver metro with rapid growth and increasing demand for multigenerational housing options.

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Broomfield

Unique city-county hybrid with virtually zero ADU competition. Tech corridor drives strong rental demand.

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Golden

Mountain-adjacent with higher home values. Walk-out basements and foothill terrain create unique ADU options.

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Highlands Ranch

HOA-heavy community transformed by HB 24-1152. Walk-out basements and generous lots. Douglas County.

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Centennial

Affluent Arapahoe County suburb. Older homes with large lots are prime candidates for detached ADUs.

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Littleton

Walkable historic downtown, affluent neighborhoods, established lots. Premium ADU market.

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Parker

Family-oriented Douglas County suburb. Strong demand for mother-in-law suites. Average home value $560K+.

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Englewood

Compact, established community with accessible price points and straightforward permitting.

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Castle Rock

Rapidly growing, affluent community. Rolling terrain ideal for walk-out basement ADUs.