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Poured or block, thin or wide: sorting out basement wall cracks

Foundation Crack Repair in Atlanta, GA

A crack in a basement wall in Atlanta, GA is usually a water problem before it is anything else. This city of about 529,000 people sits on a ridge south of the Chattahoochee River, astride the Eastern Continental Divide, and plenty of its lots slope. The short form asks one independent contractor to get in touch.

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How Wall Cracks Get Repaired

Poured concrete shrinks slightly while it cures, so thin vertical or gently slanted cracks show up even in walls a few years old, and many never leak. When one does, the usual fix is injection: a row of small ports is set over the crack, and resin, either epoxy or polyurethane, goes in under pressure until it reaches the soil side.

Block walls tend to split along mortar in a stair-step line, and resin in a block joint can run off into the hollow cores, so repointing is more common there: loose mortar comes out and fresh mortar goes in, sometimes with an interior drain at the base. Older brick and block foundations can wear away at the joints rather than crack, so they too often need mortar work.

Census survey data dates about a quarter of homes in Atlanta, GA before 1960. Red clay subsoil, common across the Georgia Piedmont, can stay saturated for days after a long rain and keep water against a wall, and backfill and footings on a sloped lot can settle unevenly. Many homes in the region have no basement wall to crack.

Have someone look soon at a long sideways crack, one that keeps widening or has one face pushed past the other, or any wall that bows inward. A dated pencil tick at each end shows later whether it grew.

The Secretary of State's list of traditional specialty trades includes "Damp proofing and Waterproofing", as the list now reads, but piers, wall bracing and rebuilt walls are not on it. Before structural work, ask what Georgia license, if any, applies and confirm it on the Secretary of State's online license search. Any engineer works for the contractor or for you, never for this site.

A stair-step crack through the mortar joints of a concrete block basement wall

The Usual Scenarios

  • Thin poured-wall cracks. Usually injected from inside, with no outdoor digging.
  • Stair-step block joints. Repointed, sometimes with a drain along the base.
  • Crumbling old mortar. Cleaned out and repacked with mortar suited to older brick or block.
  • A crack that weeps after rain. Sealed; pointing downspout water away from that side is a homeowner step that helps.
  • A sideways crack or bowing wall. Have it looked at soon; structural repair brings license and permit questions before any work.

Budgeting for Foundation Crack Repair

Cost rowFigureSource (year)
Typical basement waterproofing projectabout $3,000 to $10,000 (average about $5,000)Fixr national (2026)
Interior perimeter drain, per linear foot$40 to $120Fixr national (2026)
Sump pump installation$600 to $2,500Fixr national (2026)
Epoxy crack injection, per crack$250 to $1,000Fixr national (2026)
Waterproof paint or sealant, per sq ft$1 to $8Fixr national (2026)

Most single leaking cracks land on the injection row. Repointing, bracing, piers, engineering and permits have no sourced figure on this page, so ask for each as its own line. All rows are Fixr's 2026 national ranges, not Atlanta, GA figures or prices from this site. The cost calculator includes a crack step.

The Typical Job, in Order

  1. Visit and estimate. After a visit it sets up itself, the contractor writes up the method, the material and the price, and then both sides sign a written contract.
  2. Permits checked before work. Whether injection alone needs a permit isn't published, so ask. In the City of Atlanta, structural repair generally runs through the Office of Buildings, and the contractor checks the job there, (404) 330-6150, first.
  3. Town addresses. Druid Hills and Candler-McAfee, GA: DeKalb's permit desk, 404-371-2155 (option 3). Avondale Estates, GA: the City's office, 404-294-5400; repairs of $300 or more need a permit there. East Point, GA: Building Inspections, 2757 East Point Street. Hapeville, GA: ask City Hall, 404-669-2100.
  4. Payments in stages. Pay as the job moves along rather than up front or in cash, and get written lien waivers ahead of the final check.
A crack in a block basement wall sealed with gray paste and a row of injection ports

Why One Contact Is Enough

A single request means a single contractor's call or email instead of a string of strangers, and its estimate is its own. This site never sees or judges a crack, hires no engineer, and hands out no prices, gifts, discounts or inspections. It refers and advertises, is not a contractor, and carries no plumbing license and no residential or general contractor license. Contractors may buy flat-fee advertising here; homeowners pay nothing and get nothing.

You can always ask other contractors on your own. From whoever gets in touch, confirm the license answer on the Secretary of State's search and ask for a city or county business license, liability and workers' compensation certificates, and a few recent local customers.

White powdery deposits and damp staining on the lower courses of an old red brick basement wall

Frequently Asked Questions

Does foundation crack repair need a permit in Atlanta, GA?

It depends on the work and the address, and no published answer covers injection alone. Inside City of Atlanta limits, structural repair generally goes through the Office of Buildings; elsewhere, DeKalb or the town's office decides. The contractor confirms which permits apply before work starts; never let anyone skip one on say-so.

Is a thin crack in a newer house a worry?

Usually not on its own. Shrinkage cracks are common in young poured walls, and many never leak. Mark the ends, look again after the next long rain, and mention any water, widening or offset to the contractor if you send a request.

See Also

A crack is often one symptom among several; see basement leak repair, basement drainage and full basement waterproofing.

Talk to a Contractor About Cracks

That conversation begins after the form. Note the crack's length, the wall material and whether water comes through. One independent contractor gets the request to be contacted; if the job suits it, it reaches out, sees the wall on a visit it sets up itself and writes its own estimate. Whether to go ahead stays with you. The short form is where it starts.

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Look Up Your Town

Enter a town or ZIP code, Hapeville or 30354 for example, to see straight away whether a local contractor covers it.

Atlanta · Druid Hills, GA · Avondale Estates, GA · Candler-McAfee, GA · Hapeville, GA · East Point, GA

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