Accessory dwelling unit companies — Denver, CO

Looking for accessory dwelling unit companies in Denver, CO? Call AccessoryDwellingUnit Pros 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 custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

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Frequently asked in Denver

What are the disadvantages of ADUs?

Potential downsides can include increased property taxes, though this is usually offset by rental income. You'll also want to consider the impact on your yard space and any potential neighbor concerns. Discussing these with a local pro can help you make an informed decision for your Denver property.

How much does an ADU cost in Colorado?

The cost varies widely based on size, materials, and site complexity. Factors like foundation work and utility connections in Denver can significantly affect the price. Getting a personalized quote is the best way to understand the investment for your specific project.

What are the rules for ADUs in Colorado?

Colorado has state-level ADU legislation, but Denver also has its own specific zoning ordinances. These often dictate setbacks, lot coverage, and parking requirements. A local specialist can explain how these rules apply to your property.

Is ADU allowed in Colorado?

Yes, ADUs are generally allowed in Colorado, with specific regulations varying by city. Denver has clear guidelines in place to encourage ADU development. We can help you navigate these regulations for your Denver build.

That specific grant is for California residents and doesn't apply here. While there aren't federal grants for ADUs in Colorado currently, exploring financing options with a local expert is still a good idea. Let's discuss your Denver project's financial outlook.

What are the rules for ADU in Colorado?

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, Cherry Creek, Uptown, Highlands, Congress Park — and every surrounding area.