Questions Atlanta Homeowners Ask About Their Foundations
Short answers with their sources, starting with the question people ask most.
Answers lead, details follow. Typical price bands, with the guide behind each one, sit in the Atlanta foundation repair cost guide.
Answers
What does foundation repair cost on average?
About $5,200 in Fixr's January 2026 guide, with most projects between $2,200 and $8,200; This Old House reports $5,179. A sealed crack costs far less. At the top end, Fixr lists $4,500–$25,000 for a settling foundation and up to $40,000 for underpinning the whole house.
What makes brick houses in Atlanta crack?
Mostly small, repeated movement at corners that take roof water, plus age. About 43% of Atlanta's housing predates 1980 (U.S. Census ACS), and rain falls in every month of the year (NOAA). Hairline steps are common; widening cracks with sticking doors suggest settlement.
Is Atlanta's red clay bad for foundations?
Not in the way people assume. Most of it is low-activity clay that swells little, and the USDA soil survey for Fulton County cites shrink-swell on only a few hundred acres. Slope, loose fill and wet creek-bottom soil are the bigger problems for houses here.
Do creek floods affect foundations here?
For houses near creeks, yes. In September 2009, Peachtree Creek at Atlanta crested at 22.91 feet, above its 500-year flood level at the gage (USGS), and Fulton County fell under federal disaster declaration DR-1858 (FEMA). Saturated soil weakens support under footings and crawl space piers.
Why does my floor sag in the middle of the room?
In a crawl space house, a dip in mid-room usually traces to the girder: piers spaced too far apart, a pier that has sunk, or rot where the wood stays damp. Added posts on new footings, sistered joists or a replaced girder are the usual fixes.
Is radon a concern in Fulton County?
It is worth testing for. On the EPA's radon map Fulton County is Zone 1, where the predicted indoor average exceeds 4 pCi/L, and the agency recommends a test in every home. Sealing cracks or changing a crawl space alters how soil gas moves, so retest once the work is finished.
Who licenses contractors in Georgia?
The State Licensing Board for Residential and General Contractors, under the Secretary of State, licenses residential contractors (residential-basic and residential-light commercial) and general contractors. Ask which license a company holds and look it up before you sign.
Is the first visit free?
It depends on the company. Many local specialists don't charge for the first visit; ask when they call, before they come out.
Tell us what the house is doing
A sentence is enough: where the crack is, which floor dips, or what you saw under the house. One independent specialist who works on Atlanta foundations and crawl spaces will phone you to talk it through and, if it helps, arrange a visit.