Accessory Dwelling Unit Contractor in Denver, CO

Looking for accessory dwelling unit contractor in Denver, CO? Call AccessoryDwellingUnit Direct 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 variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.

About this service

A contractor oversees the physical construction, managing the subcontractors, materials, and daily site operations. You need a contractor when you have your designs finalized and are ready to transition into the building phase. They ensure the foundation is poured correctly, the framing is solid, and the utilities are hooked up safely. A good contractor acts as your primary point of contact, keeping the work on schedule while maintaining high standards of quality for your new dwelling.

Frequently asked in Denver

What are the disadvantages of ADUs in Denver?

Some disadvantages can include the upfront cost of construction and the permit process, which can sometimes be lengthy in Denver. You'll also need to consider potential impacts on your existing yard space. It's wise to discuss these aspects with the pros to see how they might affect your specific situation.

How much does an ADU cost in Colorado?

What are the rules for ADUs in Colorado?

Colorado's rules for ADUs often focus on lot coverage, setbacks, and owner occupancy requirements. Many municipalities, including Denver, have specific guidelines you'll need to follow. The pros can help you navigate these regulations for your project.

Is an ADU allowed in Colorado?

Yes, ADUs are generally allowed in Colorado, with many cities like Denver actively encouraging their development. Specific regulations and size limitations do apply and can vary by municipality. Consulting with local experts is key to understanding compliance.

What is the grant for ADUs in California?

While there are grants available for ADUs in California, these are specific to that state and its programs. For information on any potential incentives or grants in Colorado, it's best to ask the service provider when you call for your estimate.

What are the rules for ADU in California?

California has state-level laws that streamline ADU development, but local jurisdictions still have their own specific requirements. These often cover things like maximum size, parking, and utility connections. It's important to check with the city where you plan to build.

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: Uptown, LoDo, Capitol Hill, Cherry Creek, Highlands — and every surrounding area.