Adu company — Denver, CO | AccessoryDwellingUnit Services

Looking for adu company 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

A professional company handles the heavy lifting, including architecture, engineering, permit submittals, and the actual construction labor. You need an experienced team when you want to ensure your unit is built to code, structurally sound, and completed on a predictable schedule. We act as your single point of contact, coordinating every trade and inspection so you aren't managing subcontractors yourself. We provide professional oversight from start to finish. Exact pricing confirmed free on the call.

Frequently asked in Denver

What is the typical ADU construction process in Denver?

How do I find local ADU services in Denver?

What's the cost of an accessory dwelling unit in Denver?

The cost of an accessory dwelling unit in Denver can vary significantly based on size, design complexity, and chosen materials. Factors like foundation requirements, utility hookups, and finishes all contribute to the final price. We can't give exact figures here, but a quick call can get you a personalized estimate. We focus on getting you that quote.

What are detached accessory dwelling units?

Detached accessory dwelling units (ADUs) are separate structures built on the same property as the main house. These can range from small backyard cottages to larger guest homes. They offer maximum privacy and can be designed to complement the existing architecture of your Denver home. We can help you find pros to build these.

What are homes with in-law suites like in Denver?

Homes with in-law suites in Denver provide a private, self-contained living space for family members or long-term guests. These suites typically include a bedroom, bathroom, and often a small kitchen or kitchenette. They offer independence while keeping loved ones close. We can help you explore adding such a valuable space to your Denver property.

What does ADU construction involve in Denver?

Are prefab ADUs a good option in Denver?

Prefabricated ADUs (prefab ADUs) can be a good option in Denver, offering potential benefits like faster construction times and predictable costs. These units are built in a factory and then assembled on-site. They come in various designs and can be a cost-effective way to add living space. We can help you find local experts for these projects.

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: Capitol Hill, LoDo (Lower Downtown), Cherry Creek, Highlands, Congress Park, Uptown — and every surrounding area.