Best adu — Denver, CO | AccessoryDwellingUnit Services

Looking for best adu in Denver, CO? Call AccessoryDwellingUnit Services 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 involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

Defining the best unit for your property depends on your specific goals, such as maximizing rental yield or creating a versatile multi-generational living space. A great build features high-quality insulation, smart storage solutions, and an aesthetic that complements your main house. We emphasize durable construction and efficient design to ensure your unit remains a valuable asset for your property over the long term. Let us help you plan the right layout. Exact pricing confirmed free on the call.

Frequently asked in Denver

What are affordable ADU options in Denver?

What is the typical accessory dwelling unit cost in Denver?

The accessory dwelling unit cost in Denver can vary widely depending on the size, design complexity, and chosen materials. Factors like foundation type, site preparation, and specific Denver permit fees also influence the overall price. For an accurate understanding of costs for your specific project, it's best to get a personalized quote. We can help you arrange that.

Can I get a modular accessory dwelling unit in Denver?

Are there accessory dwelling units for rent in Denver?

Many homeowners in Denver build accessory dwelling units with the intention of renting them out. These units provide a valuable source of passive income. They can be rented to tenants, family members, or used as short-term rentals, depending on local Denver regulations. If you're interested in creating a rental unit, we can help you find builders who specialize in this.

What does 'accessory dwelling unit' mean in Denver?

In Denver, an accessory dwelling unit (ADU) is a secondary housing unit on a single-family residential lot. It's separate from the main home and includes its own basic living facilities like a kitchen and bathroom. This could be a detached structure in the backyard or an addition to the existing house. They are often called 'casitas' or 'in-law suites'. We can help you build one.

Where can I find local ADU services in Denver?

What is the process for an accessory dwelling unit permit in Denver?

Obtaining an accessory dwelling unit permit in Denver involves submitting detailed plans to the city's planning and building departments. These plans must comply with local zoning ordinances and building codes. The process includes plan review, inspections, and final approval. We can help you find builders who are experienced in navigating the Denver permit process for ADUs.

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, Highlands, LoDo, Cherry Creek, City Park, Wash Park — and every surrounding area.