Cost of accessory dwelling unit

Looking for cost of 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.

About this service

The total price for an ADU depends on several moving parts, including the square footage, your foundation type, and local labor rates. Choosing high-end finishes or complex site prep will naturally increase the budget, while standard layouts help keep things manageable. Exact pricing confirmed free on the call.

Frequently asked in Scottsdale

What are the disadvantages of ADUs in Scottsdale?

Disadvantages can include managing increased utility usage and ensuring adequate parking for both the main home and the ADU. Scottsdale's specific zoning laws might also have restrictions on size and placement that need careful attention. The pros can help you navigate these potential challenges. They'll provide a clear picture of what to expect.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Scottsdale?

Scottsdale has specific zoning ordinances and building codes that govern accessory dwelling units. These regulations often cover aspects like minimum lot size, maximum square footage, and design compatibility with the neighborhood. The pros are familiar with these rules and can explain them for your property. This ensures your project meets all requirements.

Is an ADU allowed in Arizona?

What are the rules for ADU in Arizona?

The rules for ADUs in Arizona are determined by individual cities and counties, with Scottsdale having its own set of ordinances. These typically address lot size requirements, maximum ADU size, setback distances, and parking provisions. A professional assessment will ensure your ADU adheres to all local mandates.

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