Looking for accessory dwelling unit construction cost in Scottsdale, AZ? Call AccessoryDwellingUnit Solutions 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 budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

The cost of building an ADU depends on your choice of materials, the square footage, and whether you are doing a garage conversion or a new detached build. Site access and utility upgrades also play a big role in the final bill. Exact pricing confirmed free on the call.

Frequently asked in Scottsdale

What are the disadvantages of ADUs in Scottsdale?

Potential disadvantages in Scottsdale could include strict zoning regulations and HOA rules, depending on the specific area. Water usage and desert landscaping integration are also important considerations. Thorough research and planning can overcome these hurdles.

How much does an ADU cost in Arizona?

The cost of an ADU in Arizona varies considerably based on its size, design complexity, and the finishes you select. Site preparation, utility connections, and any necessary landscaping will also impact the total price. A personalized quote provides the most accurate estimate.

What are the rules for ADUs in Arizona?

ADU regulations in Arizona are primarily governed by individual cities and counties. Scottsdale has specific zoning ordinances that dictate requirements for ADUs, including size limits and placement. It’s essential to work with professionals familiar with these local rules.

Is an ADU allowed in Arizona?

Yes, ADUs are permitted in Arizona, but each municipality enforces its own set of rules and guidelines. Scottsdale has provisions for ADUs, and understanding these specific requirements is the first step to planning your project.

While this specific grant isn't an option, exploring local financing or potential property tax benefits related to ADUs might be worthwhile. We can discuss financial planning during your consultation.

What affects ADU construction costs in Scottsdale?

Factors influencing ADU costs in Scottsdale include the chosen square footage, architectural style, and the quality of interior and exterior finishes. The condition of your lot and the complexity of utility connections are also significant cost drivers. A detailed quote will outline these specifics.

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, Gainey Ranch, Kierland, DC Ranch, Scottsdale Ranch — and every surrounding area.