Backyard 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

This is a standalone structure built on your property, separate from your main house. People usually build these when they have extra yard space and want to create a private living area for family members or a home office. Factors like site accessibility, utility connections, and foundation type move the price up or down. Exact pricing confirmed free on the call.

Frequently asked in St. Paul

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

All cities in Minnesota →

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, Cathedral Hill, Highland Park, Macalester-Groveland, West 7th — and every surrounding area.