Accessory dwelling unit companies — Tucson, 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.

About this service

Frequently asked in Tucson

Also serving nearby: Gilbert · Chandler · Mesa · Tempe · Goodyear

All cities in Arizona →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

Serving all of Tucson — population 547,239; about 2,259 residents per square mile across 242.2 sq mi. ZIP codes covered include 85701, 85702, 85703, 85704, 85705, 85706, 85707, 85708.

Neighborhoods served in Tucson: Sam Hughes, Blenman-Elm, Downton Tucson, Catalina Foothills, Rillito, South Tucson — and every surrounding area.