Adu builder — Denver, CO | AccessoryDwellingUnit Services

Looking for adu builder 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 adu builder is a professional partner who specializes in the specific requirements of secondary housing units. You need one if you want to avoid the headache of managing subcontractors and complex permit applications yourself. We bring the expertise to keep your project on track and within code.

Frequently asked in Denver

What are the rules for an accessory dwelling unit rental in Denver?

Accessory dwelling unit rental rules in Denver involve specific regulations. ADUs must meet safety and occupancy standards set by the city. You'll need to ensure your ADU complies with zoning laws regarding size and placement. Obtaining the proper permits is essential before renting out your Denver ADU. Understanding these guidelines ensures legal and successful rentals.

How can I find affordable ADUs in Denver?

What about backyard accessory dwelling units in Denver?

Can I get an ADU permit in Denver?

Who are accessory dwelling unit contractors in Denver?

What's involved in accessory dwelling unit construction in Denver?

How much does local ADU construction cost?

The cost of local ADU construction in Denver varies greatly. Factors like the size of the unit, the materials chosen, and site complexity all play a role. Permits and utility hookups add to the expense. For an accurate estimate specific to your Denver property, it's best to get a personalized quote from a licensed, insured pro.

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

All cities in Colorado →

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: Highland, LoDo, Capitol Hill, Congress Park, Uptown, Washington Park — and every surrounding area.