Looking for cost to build accessory dwelling unit 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.

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When calculating the budget for a secondary unit, consider the costs for architectural design, permits, materials, and labor. Custom designs and high-end interior finishes will push your budget higher, while standardized layouts can keep costs more predictable. Exact pricing confirmed free on the call.

Frequently asked in Scottsdale

What are the disadvantages of ADUs in Scottsdale?

Potential downsides include the initial construction expenses and navigating local building codes in Scottsdale. You'll also need to consider how an ADU might impact your yard space and privacy. It's wise to research these factors thoroughly. A quick call can clarify these points for your specific situation.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Arizona?

Is ADU allowed in Maryland?

This question pertains to Maryland, and our services are focused on Arizona. For information regarding ADU regulations in Maryland, you should consult local authorities and resources within that state. We assist homeowners in Scottsdale.

What are the rules for ADU in California?

California has its own ADU laws, but our expertise is focused on Arizona regulations. If you're in Scottsdale, we can help you understand the local requirements. It's important to distinguish between state and city rules for any ADU project. Call us for local guidance.

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, Silverleaf — and every surrounding area.