Accessory dwelling unit — 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.

About this service

An ADU is a self-contained living space that includes a kitchen, bathroom, and sleeping area, situated on the same lot as your primary home. You need one if you require more space but want to avoid moving. Costs fluctuate based on material choices, utility upgrades, and square footage. Exact pricing confirmed free on the call.

Frequently asked in St. Paul

Also serving nearby: Minneapolis · Bloomington · Rochester · Duluth · Sioux Falls

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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: Highland Park, Summit Hill, Como Park, Merriam Park, Macalester-Groveland — and every surrounding area.