ADU guides · Updated October 2026

ADU guides for Atlanta-area homeowners.

Each guide answers one question in its first paragraph, then covers the cases where the answer changes. Rules and figures carry a date and a source, because Atlanta's ADU rules are under active review.

Costs and income

How much does an ADU cost in Atlanta?Published 2026 ranges by ADU type, cost per square foot, and what quotes leave out.Read the guide How much rent can an ADU make in Atlanta?Current rent reports, what sets ADU rent, and the occupancy and short-term rental rules.Read the guide

Rules and approvals

Can I build an ADU on my Atlanta lot?Eligible districts, the 750 sq ft and 20 ft limits, and what the city is proposing.Read the guide Does Georgia have a statewide ADU law?Why there is no state mandate, what HB 1166 would have done, and what state rules still apply.Read the guide

Special situations

Can an HOA block an ADU in Georgia?Why covenants can be stricter than zoning and how to read yours.Read the guide Can I turn my basement into an ADU in Atlanta?Attached units in the City of Atlanta, the proposal to allow them, and nearby alternatives.Read the guide

Find out what your lot allows.

Give us the property address and the kind of unit you have in mind. We read the zoning for that parcel, flag anything that could stop the project, and reply before any design work starts. Serving Atlanta, Decatur, Sandy Springs, Marietta and East Point.