Cost of accessory dwelling unit — Ann Arbor, MI
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 Ann Arbor
How much does it cost to build an accessory dwelling unit in Ann Arbor?
Where can I find accessory dwelling unit builders in Ann Arbor?
What are the steps involved in ADU building in Ann Arbor?
Can I get an ADU quote for my Ann Arbor property?
What are the best accessory dwelling unit options in Ann Arbor?
What is the process for accessory dwelling unit construction cost in Ann Arbor?
What are accessory dwelling units (ADUs) 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: Burns Park, Kerrytown, South University, North Maple, Old West Side — and every surrounding area.
Areas we serve
Browse by state, then city.