Detached accessory dwelling unit — Atlanta, GA

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

A detached ADU is a standalone building separate from your main home, like a backyard cottage. These provide the most privacy for you or your tenants since there are no shared walls. You need this if you have a large enough yard to accommodate a separate structure.

Frequently asked in Atlanta

Also serving nearby: Sandy Springs · South Fulton · Roswell · Columbus · Chattanooga

All cities in Georgia →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

Serving all of Atlanta — population 510,823; about 3,776 residents per square mile across 135.3 sq mi. ZIP codes covered include 30301, 30302, 30303, 30304, 30305, 30306, 30307, 30308.

Neighborhoods served in Atlanta: Buckhead, Midtown, Virginia-Highland, Inman Park, West Midtown — and every surrounding area.