Accessory dwelling unit builders — Phoenix, AZ
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
These are specialized contractors who focus specifically on the design and assembly of secondary housing units. Unlike general contractors who take on all home renovations, these specialists understand the unique constraints of building in backyards or converting existing structures. You need them when you want someone who manages the entire process—including permits and site management—specifically to ensure your ADU is built efficiently, correctly, and according to the specific regulations governing secondary structures on residential lots.
Frequently asked in Phoenix
What's involved in building an ADU in Phoenix?
How much does it typically cost to build an ADU in Phoenix?
What's the permit process for an ADU in Phoenix?
What does 'accessory dwelling unit' mean for Phoenix homeowners?
An accessory dwelling unit means a secondary, smaller housing unit on a single-family lot in Phoenix. It's a separate living space with its own kitchen, bathroom, and entrance. This offers flexibility for homeowners. It can be used for rental income or family. This is a key zoning allowance in Phoenix.
Can I get an ADU quote for Phoenix quickly?
Are there contractors specializing in ADUs in Phoenix?
What are the key considerations for an ADU unit in Phoenix?
Also serving nearby: Glendale · Scottsdale · Tempe · Peoria · Surprise
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Phoenix — population 1,650,070; about 3,183 residents per square mile across 518.3 sq mi. ZIP codes covered include 85001, 85002, 85003, 85004, 85005, 85006, 85007, 85008.
Neighborhoods served in Phoenix: Arcadia, Biltmore, Camelback East, Downtown Phoenix, North Phoenix, South Phoenix — and every surrounding area.
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