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 in Denver?
Potential disadvantages include initial construction costs and the fact that it might impact your yard space. You'll also need to consider how it fits with your existing property's aesthetic. However, the benefits of added income and property value often outweigh these concerns for Denver homeowners.
How much does an ADU typically cost in Denver?
The cost varies significantly based on size, materials, and site conditions in Denver. Factors like foundation type, plumbing, and electrical work all influence the final price. A custom quote is the best way to get an accurate figure for your specific project.
What are the rules for ADUs in Denver?
Can I build an ADU in my Denver backyard?
Generally, yes, Denver allows ADUs in backyards, provided they meet all zoning and building requirements. Size limitations and placement rules are key considerations. We can help you determine if your backyard is suitable.
How long does it take to build an ADU in Denver?
The timeline can range from a few months to over a year, depending on design complexity, permitting, and construction. Weather in Denver can also play a role during certain building phases. We can give you a more precise estimate after a site assessment.
What permits are needed for a Denver ADU?
You'll need building permits from the City of Denver, and potentially others depending on your specific location and project scope. This includes zoning review and building inspections. We can guide you through the necessary permit process.
Also serving nearby: Aurora · Thornton · Centennial · Westminster · Lakewood
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
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: LoDo, Capitol Hill, Congress Park, Highlands, Cherry Creek — and every surrounding area.
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