Accessory dwelling unit permit cost — St. Paul, MN
Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
Frequently asked in St. Paul
What makes a 'best' accessory dwelling unit in St. Paul?
Who are accessory dwelling unit companies in St. Paul?
What's involved in accessory dwelling unit contractor services in St. Paul?
What are the options for accessory dwelling unit rental in St. Paul?
What is ADU building in St. Paul?
What is a detached accessory dwelling unit (DADU) in St. Paul?
What does 'ADU unit' mean in St. Paul?
Also serving nearby: Minneapolis · Bloomington · Rochester · Duluth · Sioux Falls
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of St. Paul — population 303,820; about 5,845 residents per square mile across 52.0 sq mi.
Neighborhoods served in St. Paul: Summit Hill, Mac-Groveland, Highland Park, Cathedral Hill, Como — and every surrounding area.
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