Cost to build accessory dwelling unit

Looking for cost to build accessory dwelling unit in Aurora, CO? Call AccessoryDwellingUnit Services for a contact a provider — no obligation. Licensed adu builders serve Aurora 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

When estimating the cost to build, consider the difference between a prefab unit and custom construction, as well as site preparation requirements like clearing trees or grading land. Labor and material prices also play a significant role. We provide an exact pricing confirmed free on the call.

Frequently asked in Aurora

What are the disadvantages of ADUs?

Building an ADU in Aurora involves significant upfront costs for utility connections and site preparation. You will also deal with strict building codes that limit the size and placement of your unit. Proper planning is essential to ensure your investment adds value rather than creating a maintenance burden. Call us to discuss the specific considerations for your Aurora home today.

How much does an ADU cost in Massachusetts?

What are the rules for ADUs in California?

Rules in California do not apply to your home in Aurora. You must follow the specific municipal codes and zoning ordinances of Aurora for all secondary structures. Building without local approval can lead to severe penalties or required teardowns. Speak with a local specialist to get the correct information regarding the regulations for your specific property in Aurora.

Is ADU allowed in Maryland?

What are the rules for ADU in California?

You are located in Aurora, so California rules do not govern your project. You must comply with local Aurora building standards to ensure your accessory dwelling unit is safe and legal. Don't waste time researching rules from other states that don't apply to your lot. Call a local specialist now to get the accurate rules for your Aurora home.

Also serving nearby: Denver · Centennial · Thornton · Lakewood · Westminster

All cities in Colorado →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

395,052residents

2,423per sq mile

8ZIP codes served

Serving all of Aurora — population 395,052; about 2,423 residents per square mile across 163.0 sq mi. ZIP codes covered include 80010, 80011, 80012, 80013, 80014, 80015, 80016, 80017.

Neighborhoods served in Aurora: Meadow Hills, Stapleton, Seven Hills, Tallyn's Reach, Mission Viejo, Saddle Rock — and every surrounding area.