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
The total cost for an ADU depends on whether you are building a new detached structure, converting an existing garage, or adding an attached unit. Factors like plumbing installation, electrical panel upgrades, and custom interior finishes drive the final investment. Understanding these variables early helps you determine the feasibility of your project. Exact pricing confirmed free on the call.
Frequently asked in Denver
What are the disadvantages of ADUs in Denver?
Disadvantages can include the initial construction cost and potential impact on your current yard space. Permitting in Denver can also take time, depending on your specific location and the complexity of the build. However, the long-term benefits like increased property value and rental income often outweigh these concerns.
How much does an ADU cost in Denver?
The cost of an ADU in Denver depends heavily on its size, design, and the materials you choose. Factors like foundation work and utility connections also play a significant role. To get an accurate figure for your property, it's best to speak with a local pro who can assess your specific needs and provide a detailed quote.
What are the rules for ADUs in Denver?
Denver has specific zoning regulations for ADUs, including limits on size, setbacks, and owner-occupancy requirements. It's crucial to understand these rules before you start planning. A local expert can guide you through the permitting process and ensure your project meets all city ordinances.
Is an ADU allowed in Denver?
Yes, ADUs are permitted in Denver, but with specific regulations you'll need to follow. These rules are designed to ensure ADUs integrate well into existing neighborhoods. Understanding the current Denver zoning code for accessory dwelling units is the first step.
What's the process for building an ADU in Denver?
The process typically involves design, obtaining permits from the city of Denver, construction, and final inspections. Working with experienced local professionals simplifies this. They understand the Denver building codes and can help navigate the application process efficiently.
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, LoDo, Cherry Creek, Congress Park, Sloan's Lake, Uptown — and every surrounding area.
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