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Cost of accessory dwelling unit — Denver, CO

Looking for cost of accessory dwelling unit in Denver, CO? Call AccessoryDwellingUnit Pros for a free estimate — no obligation. Licensed adu builders serve Denver and the surrounding area, and you'll get straight answers on timing and what affects the price.

Thinking about adding an accessory dwelling unit to your Denver property? It's a smart way to boost your home's value and create flexible living space. Whether you're in a historic bungalow or a newer build, ADUs can work. We're talking about adding a separate unit, like a detached garage conversion or a basement apartment, that can bring in rental income or house extended family. Many Denver homeowners wonder about the specifics, like how much it might cost or what permits are needed. The size and complexity of the ADU, plus site conditions on your Denver lot, will impact the final quote. The pros we work with understand the local building codes and can guide you through the process. This can significantly help you navigate the planning and construction. Call us to discuss your Denver ADU project and get a clear picture of what's involved. Call now for a free estimate. Licensed, insured pros serve every neighborhood in Denver. Same-day appointments are often available in Denver. One quick call gets you a free quote — no obligation.

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.

About this service

The total investment for an ADU depends on several moving parts, including your property’s site conditions, the complexity of your site plan, and the high-end finishes you select. Whether you are building a detached cottage or converting a garage, costs vary based on utility connections and local labor rates. Exact pricing confirmed free on the call.

Frequently asked in Denver

What are the disadvantages of ADUs?

Disadvantages can include upfront construction costs and potential zoning restrictions specific to your Denver neighborhood. You'll also need to consider ongoing maintenance for the new unit. It's important to weigh these against the benefits of added space or income.

How much does an ADU cost in Colorado?

Costs vary widely depending on size, materials, and site prep in the Denver metro area. Factors like foundation work, plumbing, and electrical can add to the overall price. A free quote will give you a precise figure for your specific project.

What are the rules for ADUs in Colorado?

Colorado has state-level ADU laws, but Denver also has its own specific zoning ordinances. These dictate things like lot coverage, setbacks, and parking requirements. Pros can explain how these apply to your Denver property.

Is ADU allowed in Colorado?

Yes, ADUs are generally allowed in Colorado, with local municipalities like Denver having their own regulations. Many cities encourage ADUs to address housing needs. We can help you understand the specific rules for your Denver location.

What is the $40,000 grant in California for ADU?

That specific grant is for California and doesn't apply here. However, there may be local incentives or financing options available in Denver. We can discuss potential funding avenues when you call for your free quote.

What are the rules for ADU in Colorado?

Colorado ADU rules are supplemented by local Denver ordinances. These cover everything from the maximum size of the unit to how it integrates with your existing home. Understanding these details upfront is key to a smooth build.

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

All cities in Colorado →

More on this: HUD ADU resources — ADU policy and financing research.

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

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