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.
Frequently asked in Ann Arbor
What are the costs for accessory dwelling unit construction in Ann Arbor?
How can I find an ADU builder in Ann Arbor?
What are the best ADU options for Ann Arbor homeowners?
What are the rules for accessory dwelling unit homes in Ann Arbor?
Can I get an accessory dwelling unit near me in Ann Arbor?
What are the advantages of accessory dwelling unit companies in Ann Arbor?
What is the process for ADU construction in Ann Arbor?
Also serving nearby: Livonia · Dearborn · Detroit · Warren · Sterling Heights
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Ann Arbor — population 119,381; about 4,213 residents per square mile across 28.3 sq mi. ZIP codes covered include 48103, 48104, 48105, 48106, 48107, 48108, 48109, 48113.
Neighborhoods served in Ann Arbor: Downtown Ann Arbor, Kerrytown, Old West Side, Geddes Heights, University of Michigan Campus Area — and every surrounding area.
Areas we serve
Browse by state, then city.
