Accessory dwelling unit contractor

Looking for accessory dwelling unit contractor in Denver, CO? Call AccessoryDwellingUnit Experts 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 is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

A dedicated contractor manages the heavy lifting of your ADU project. This involves hiring skilled tradespeople, ordering materials, and ensuring that every phase of construction passes municipal inspections. You need a contractor when you want a single point of contact to oversee the transition from a vacant backyard area to a fully finished, livable home. They bridge the gap between initial architectural designs and the final move-in date for your new space.

Frequently asked in Denver

What are the disadvantages of ADUs?

While ADUs offer many benefits, potential disadvantages include the impact on your property's yard space and potentially increased utility usage. You might also consider the effect on your property taxes and the ongoing maintenance. Discussing these aspects with a local expert is key to a balanced decision.

How much does an ADU cost in Colorado?

The cost for an ADU in Colorado can range significantly, depending on size, materials, and site preparation needed. Factors like foundation type, plumbing, and electrical work all play a role in the final price. Get a personalized quote to understand the investment for your Denver property.

What are the rules for ADUs in Colorado?

Colorado has state-level guidelines, but Denver also has its own specific zoning ordinances for Accessory Dwelling Units. These often cover things like maximum size, setbacks, and parking requirements. A local specialist can navigate these regulations for your specific Denver location.

Is an ADU allowed in Denver?

Yes, ADUs are permitted in Denver, and the city has been actively encouraging their development to address housing needs. Specific rules apply regarding lot size, setbacks, and how they integrate with the main house. We can help you understand if your property meets Denver's ADU requirements.

What are the rules for ADU in California?

California's ADU laws are designed to streamline approvals and encourage development, often setting statewide minimum standards. These rules dictate things like minimum unit sizes and owner occupancy requirements. It's important to remember these are California-specific and differ from Denver's regulations.

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: Congress Park, Platt Park, Uptown, LoHi, Cheesman Park — and every surrounding area.