Cost to build accessory dwelling unit

Looking for cost to build accessory dwelling unit in Aurora, CO? Call AccessoryDwellingUnit Direct 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 variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.

About this service

The expense of building an ADU varies based on site preparation, whether you need to run new sewer or electrical lines, and the level of interior customization you choose. Larger custom builds naturally require more materials and labor than simpler conversions. We provide exact pricing confirmed free on the call.

Frequently asked in Aurora

What are the disadvantages of ADUs in Colorado?

Potential disadvantages of ADUs in Colorado might include the initial construction costs and the impact on your existing yard space. You may also see an increase in your utility bills depending on usage. It's wise to consider how these factors align with your long-term plans. We can help you discuss them.

How much does an ADU cost in Colorado?

The cost to build an ADU in Colorado varies widely. Factors like the size of the unit, the chosen architectural style, and the quality of finishes are major cost drivers. Permit fees and any necessary site work can also add to the total. A personalized quote will clarify costs for your Aurora project.

What are the rules for ADUs in Colorado?

ADU rules in Colorado are largely determined by individual municipalities. Aurora has specific zoning ordinances and building codes that govern ADU construction. These often address requirements like minimum lot size, setbacks, and parking. Understanding these local guidelines is crucial.

Is an ADU allowed in Colorado?

Yes, ADUs are permitted in Colorado, with many cities actively encouraging their development. Aurora has specific regulations in place to allow for ADUs. It's always best to confirm the exact requirements with the city's planning department. We can help you start the process.

What affects ADU costs in Aurora?

In Aurora, the cost of an ADU is influenced by its size, design complexity, and the quality of materials selected. Foundation work, plumbing, and electrical installations are also significant expenses. Permit costs and any necessary landscaping or grading should be factored in. Get a quote for a clear breakdown.

Can I get advice on ADU designs for my Aurora property?

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

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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: Hampden South, Southlands, Seven Hills, Aurora Highlands, Aurora Hills — and every surrounding area.