Accessory dwelling unit builders — Scottsdale, AZ
Last updated: September 24, 2026
What affects the price
Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.
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Frequently asked in Scottsdale
What are the rules for building a detached ADU in Scottsdale?
How do I find an ADU builder in Scottsdale?
What factors influence the cost of an accessory dwelling unit in Scottsdale?
Can I build an ADU on my property in Scottsdale?
What are the benefits of adding an in-law suite to my Scottsdale home?
Are modular ADUs a viable option in Scottsdale?
Modular accessory dwelling units are often a viable and efficient option in Scottsdale, offering a controlled construction environment. These units can be prefabricated off-site and then assembled on your property. The pros can advise on the suitability of modular construction for your specific project. They'll explain the benefits in terms of speed and cost-effectiveness. This provides an alternative construction method.
What services are available for accessory dwelling units in Scottsdale?
Also serving nearby: Phoenix · Glendale · Tempe · Mesa · Peoria
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
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, Kierland, Gainey Ranch, McCormick Ranch, South Scottsdale — and every surrounding area.
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