Looking for accessory dwelling unit services 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

These services cover the end-to-end process of adding a secondary home to your property. This includes initial zoning checks, architectural design, permit filing, and final construction. You need these services when you want to create a separate living space for family, guests, or as a rental unit, but don’t want to manage the complex legal and structural requirements on your own.

Frequently asked in Scottsdale

What are the disadvantages of ADUs?

Potential drawbacks of adding an ADU include impacts on your existing yard space and possibly increased water usage. Some homeowners also consider the effect on privacy and the added responsibility of managing a rental unit. It's wise to think through these aspects for your Scottsdale home. We can help you explore these points.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Arizona?

Arizona has state laws encouraging ADUs, but local cities like Scottsdale have their own specific ordinances. These typically cover lot size requirements, setbacks from property lines, and parking regulations. It’s vital to understand these local rules to ensure your ADU project complies. We can help you find the right guidance.

Is ADU allowed in Arizona?

This program is not available in Arizona. However, exploring financing options and potential local incentives for your Scottsdale ADU project is still a good idea. We can discuss available avenues.

What are the rules for ADU in California?

California has implemented laws to streamline the ADU process, often setting statewide standards for aspects like minimum lot size and parking. While local governments maintain some authority, state legislation generally makes ADU construction more accessible. Understanding these statewide guidelines is beneficial. Our local pros are aware of these developments.

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 Scottsdale, McCormick Ranch, Kierland, Gainey Ranch, Silverleaf — and every surrounding area.