Accessory dwelling unit companies

Looking for accessory dwelling unit companies 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

These companies provide comprehensive support for homeowners, often pairing design experts with construction crews to handle the entire project under one roof. They are helpful when you want to avoid hiring separate architects and builders. You should look into these companies when you want a streamlined experience and a single point of accountability for your backyard project from start to finish.

Frequently asked in Denver

What is the estimated ADU cost in Denver?

How do I find accessory dwelling unit contractors in Denver?

Finding accessory dwelling unit contractors in Denver involves seeking out local builders with specific ADU experience. Look for professionals familiar with Denver's zoning laws and building codes. Online directories and local referrals can be helpful. We can help you identify qualified contractors for your project.

What are the requirements for accessory dwelling unit permits in Denver?

What are the typical accessory dwelling unit construction costs in Denver?

Typical accessory dwelling unit construction costs in Denver are influenced by the chosen materials, square footage, and any necessary site preparation. Custom designs and high-end finishes will increase the overall expense. It's wise to get detailed quotes from experienced builders. We can help you secure those quotes.

Can I find an ADU builder in Denver?

Yes, you can find ADU builders in Denver who specialize in creating these secondary living spaces. These builders understand the Denver market and its specific building requirements. They can guide you through the entire process, from design to completion. We can help you locate reliable ADU builders.

What are the rules for accessory dwelling units in Denver?

Accessory dwelling units in Denver are governed by specific city ordinances regarding size, placement, and occupancy. These rules are designed to ensure ADUs integrate well with existing neighborhoods. You'll need to adhere to setback requirements and lot coverage limits. We can help you understand these regulations.

What financing options are available for accessory dwelling units in Denver?

Financing options for accessory dwelling units in Denver often include home equity loans, personal loans, or construction loans. Some homeowners also use cash savings. Consulting with a financial advisor or lender experienced in home improvements can help. We can provide initial advice on the process.

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, LoDo, Five Points, Highlands, Washington Park, Cherry Creek — and every surrounding area.