Accessory dwelling unit permit cost

Looking for accessory dwelling unit permit cost in Denver, CO? Call AccessoryDwellingUnit Direct 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 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

Securing permits is a mandatory step that covers city review fees, impact fees, and inspections to ensure your build meets safety codes. These costs vary significantly by city and the scope of your specific project. Because local jurisdictions set their own fee structures, we assist you in estimating these expenses during our initial consultation. We ensure you have a clear picture of all regulatory requirements before you begin. Exact pricing confirmed free on the call.

Frequently asked in Denver

What are the disadvantages of ADUs in Denver?

Some disadvantages of ADUs in Denver can include the upfront construction costs and the time it takes to get permits approved by the city. You'll also need to consider how an ADU might impact your property taxes and insurance. It's also important to research any local neighborhood covenants that might apply before you begin.

How much does an ADU cost in Colorado?

The cost of an ADU in Colorado can vary significantly based on size, materials, and site specifics. Factors like foundation type, utility hookups, and finishes all play a role. To get an accurate idea for your Denver property, it's best to get a personalized quote from a local expert.

What are the rules for ADUs in Denver?

Denver has specific zoning regulations for ADUs, including lot size, setback requirements, and the number of ADUs allowed per property. There are also rules about owner-occupancy and rental restrictions. Understanding these local ordinances is crucial before starting any project.

Is an ADU allowed in Denver?

Yes, ADUs are allowed in Denver, but they must comply with the city's zoning ordinances. These rules dictate things like the maximum size of the ADU, how close it can be to property lines, and the types of ADUs permitted. Our local pros are well-versed in these regulations.

What is the accessory dwelling unit permit cost in Denver?

Can I build an ADU on my property in Denver?

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

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