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.
About this service
A San Diego-based contractor understands the specific seismic requirements, coastal commission rules, and local ordinances that govern backyard units in the region. You need a local specialist when your property is located within San Diego city or county limits to ensure your project complies with specific regional density mandates. These contractors are experts in navigating the unique permit process required by local authorities to get your project approved and completed correctly. Exact pricing confirmed free on the call.
Frequently asked in Denver
What are the disadvantages of ADUs in Denver?
Disadvantages in Denver can include the upfront cost of construction and potential impacts on your existing yard space. You'll also need to navigate Denver's specific zoning laws, which can sometimes be complex. The pros can help you understand these trade-offs and how they might affect your project.
How much does an ADU cost in Colorado?
What are the rules for ADUs in Denver?
Is an ADU allowed in Colorado?
Yes, Colorado law generally permits ADUs, though local municipalities like Denver have their own specific regulations. It's essential to check with the city planning department and consult with experienced ADU builders. They know the ins and outs.
What is the process for building an ADU in Denver?
Can I build an ADU on a small lot in Denver?
Denver's zoning codes dictate minimum lot sizes and setback requirements for ADUs. The feasibility depends on your specific property dimensions and location within the city. A site assessment by a pro will tell you for sure.
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: Capitol Hill, Highlands, Congress Park, Sunnyside, LoDo, Uptown — and every surrounding area.
Areas we serve
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