What does accessory dwelling unit mean

Looking for what does accessory dwelling unit mean in Denver, CO? Call AccessoryDwellingUnit Services for a contact a provider — no obligation. Licensed adu builders serve Denver and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

An accessory dwelling unit is simply a secondary, self-contained living space located on the same lot as a primary house. It includes its own kitchen, bathroom, and sleeping area. People build them to increase property value, house family members, or create a source of passive income. If you are looking to maximize your land use, this is the definition you need.

Frequently asked in Denver

What are the best ADU housing options for Denver residents?

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What's involved in getting an ADU permit in Denver?

What are the benefits of homes with in-law suites in Denver?

Homes with in-law suites in Denver offer incredible flexibility and value. They provide comfortable, private living spaces for aging parents, adult children, or guests. This can enhance family harmony and offer a solution for multi-generational living. Plus, an well-designed in-law suite can increase your property's resale value. The pros can help you create the perfect space.

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What does 'accessory dwelling unit' mean?

An 'accessory dwelling unit' (ADU) is a secondary, independent living space on a single-family residential lot. It's a smaller, complete dwelling unit that is either attached to the main house or a separate structure on the same property. ADUs can be used for various purposes, such as housing family members, providing rental income, or accommodating guests, while adhering to local zoning laws.

What are the costs associated with ADU construction in Denver?

Also serving nearby: Aurora · Thornton · Centennial · Westminster · Lakewood

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More on this: HUD ADU resources — ADU policy and financing research.

Service area details

716,577residents

4,681per sq mile

8ZIP codes served

Serving all of Denver — population 716,577; about 4,681 residents per square mile across 153.1 sq mi. ZIP codes covered include 80201, 80202, 80203, 80204, 80205, 80206, 80207, 80208.

Neighborhoods served in Denver: Capitol Hill, LoDo, Highlands, Cherry Creek, Congress Park, Sloan's Lake — and every surrounding area.