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Best accessory dwelling unit — Scottsdale, AZ

Looking for best accessory dwelling unit in Scottsdale, AZ? Call AccessoryDwellingUnit Services for a contact a provider — no obligation. Licensed adu builders serve Scottsdale 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

Frequently asked in Scottsdale

What are the disadvantages of ADUs?

Some potential drawbacks include the initial construction expense, possible reduction in yard space, and the need to comply with local regulations. You may also see an increase in property taxes. It’s important to consider these aspects beforehand. Speaking with a professional is highly recommended.

How much does an ADU cost in Arizona?
What are the rules for ADUs in Arizona?

Arizona has statewide guidelines for ADUs, but Scottsdale has its own particular ordinances regarding setbacks, lot coverage, and parking. It is crucial to be aware of both state and city rules. A local specialist can explain these regulations clearly for your project.

Is an ADU allowed in my neighborhood?
What is the process for building an ADU?
Can I build an ADU on my existing property?

Most existing residential properties in Scottsdale are candidates for ADU construction, provided they meet the city's zoning requirements. Your lot size and existing structures will be taken into consideration. A professional assessment will provide a definitive answer.

Also serving nearby: Phoenix · Glendale · Tempe · Mesa · Peoria

All cities in Arizona →

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

Service area details

244,394residents
1,328per sq mile
8ZIP codes served

Serving all of Scottsdale — population 244,394; about 1,328 residents per square mile across 184.0 sq mi. ZIP codes covered include 85250, 85251, 85252, 85254, 85255, 85256, 85257, 85258.

Neighborhoods served in Scottsdale: Old Town, McCormick Ranch, Gainey Ranch, Kierland, North Scottsdale, South Scottsdale — and every surrounding area.

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