Adu Services in Denver, CO | AccessoryDwellingUnit Experts

Looking for adu services in Denver, CO? Call AccessoryDwellingUnit Experts 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 is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

ADU services are the professional steps required to transform your backyard or garage into a functional living space. This process involves design consultations, structural engineering, and utility connections. You should look into these services if you are ready to increase your property value or need extra living space for relatives. We focus on making sure your project meets all safety codes and neighborhood regulations while fitting the specific design style of your main home.

Frequently asked in Denver

What are the disadvantages of ADUs?

While ADUs offer benefits, potential downsides include increased utility costs and a longer construction timeline in Denver. You'll also need to consider how it impacts your property taxes. The pros can help you weigh these factors for your specific Denver location.

How much does an ADU cost in Colorado?

What are the rules for ADUs in Colorado?

Colorado's regulations for ADUs can differ by municipality. Denver has specific zoning ordinances you'll need to follow, covering things like lot coverage and setbacks. The specialists can walk you through Denver's current rules.

Is an ADU allowed in Denver?

Yes, Denver generally allows ADUs, but there are specific requirements and limitations. These often relate to lot size, existing structures, and how the ADU will be used. We can help you understand Denver's specific ADU allowances.

While there might be grants available for ADUs in certain areas, they often come with specific eligibility criteria and are not universally applicable in Denver. It's best to inquire about current funding opportunities when you call for your quote.

Can I build an ADU in any Denver neighborhood?

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, Uptown, Congress Park, Sloan's Lake, Cheesman Park — and every surrounding area.