Floor Joist and Sagging Floor Repair in Metro Atlanta
Floor joist repair restores the load-carrying capacity of a floor system from inside the crawl space by sistering, replacing or supplementing joists, repairing or replacing girders and sill plates, and re-establishing bearing at failed piers, which is what stops a floor from sagging or bouncing.
- Typical range
- $1,200 – $9,500
- Unit pricing
- $200–$700 per joist sistered, installed
- Time on site
- 1 to 4 days on site
- Permit
- Required
What floor joist repair costs
Sistering six to eight joists plus resetting two failed piers under a Metro Atlanta bungalow commonly runs $3,200 to $6,500.
| Line item | Low | High | Unit |
|---|---|---|---|
| Sister a floor joist, installed | $200 | $700 | per joist |
| Full joist replacement | $350 | $1,100 | per joist |
| Joist end repair where a leak rotted the bearing end | $250 | $600 | per joist |
| Temporary shoring and controlled lift | $400 | $1,500 | per project |
| Laser level elevation survey and documentation | n/a | n/a | included with inspection |
| Adjustable steel post and footing pad | $400 | $1,100 | each |
| Structural building permit and framing inspection | $120 | $450 | per project |
What drives the number
- Number of joists involved and whether sistering is sufficient or replacement is required
- Whether the girder or sill plate also failed, which is common and changes the scope substantially
- Access clearance, since low crawl spaces limit the lumber length that can be maneuvered in
- Whether ductwork, plumbing or wiring has to be temporarily relocated
- Adjustable steel support post and footing pad installation where a new bearing point is needed
These ranges are a planning model built for this site, not a survey of what other contractors charge. It has three inputs. Material quantities are taken off a reference 1,400 square foot crawl space with 150 linear feet of foundation wall, priced at Metro Atlanta supplier list rates. Labour hours are costed against Bureau of Labor Statistics wage data for the Atlanta metropolitan area, where the mean hourly wage was $34.57 in May 2025. Permit fees come from the published schedules of the jurisdictions listed on this site. See the detailed cost guide.
Signs you need floor joist repair
- Floors that bounce noticeably when you walk across them
- A visible dip or slope, often confirmed by a ball rolling on its own
- Gaps opening between the baseboard and the floor
- Interior doors that stopped latching properly
- Cracked tile or grout lines running in a consistent direction
Terms you will hear
sistering, girder, sill plate, bearing, shoring, adjustable steel post. These come up in every honest quote for this work. A quote that avoids all of them is describing a product rather than a repair.
When floor joist repair is the wrong purchase
If the sag is confined to one small area near a bathroom or exterior door, the cause is usually a localized leak that rotted a single joist end, and that is a much smaller repair than a whole-floor scope.
Transparent pricing, published first
Every service page shows line-item ranges and the local factors that move them, before you call. If a quote you receive falls outside them, you have something concrete to ask about.
A written scope before any work starts
Written scope and price before any work starts. Quotes are honored for 30 days.
Response time we hold ourselves to
A crawl space specialist calls back within 60 minutes during posted hours, and by 9:00 AM the next morning for after-hours calls.
Licensing you can verify yourself
Georgia requires contractor licensing above $2,500 in project value. Ask for the number, then check it against the state register yourself. Georgia Secretary of State licence lookup
How floor joist repair is done
- 1Map the sag with a laser level and record floor elevations across the affected area
- 2Identify whether the failure is the joist, the girder, the sill plate or the pier
- 3Pull the structural building permit for the jurisdiction
- 4Set temporary shoring and lift slowly, typically an eighth of an inch per day on older framing
- 5Sister or replace the failed members with properly sized, treated or kiln-dried lumber
- 6Install new footing pads and adjustable steel posts where a new bearing point is required
- 7Re-check elevations, pass the framing inspection, and document the final readings
Floor Joist and Sagging Floor Repair by city
Dedicated pages, each with that city’s permit office, housing stock and local price factors:
We also cover floor joist repair in these cities. Each city hub carries its local conditions and permit path:
Floor Joist and Sagging Floor Repair: common questions
What is floor joist and sagging floor repair?
Floor joist repair restores the load-carrying capacity of a floor system from inside the crawl space by sistering, replacing or supplementing joists, repairing or replacing girders and sill plates, and re-establishing bearing at failed piers, which is what stops a floor from sagging or bouncing.
How much does floor joist repair cost in Metro Atlanta?
Sistering six to eight joists plus resetting two failed piers under a Metro Atlanta bungalow commonly runs $3,200 to $6,500. These ranges are a planning model built for this site, not a survey of what other contractors charge.
How long does floor joist repair take?
1 to 4 days on site. The schedule extends when a permit and inspection are involved, or when water has to be intercepted before the main work can start.
Do I need a permit for floor joist repair in Georgia?
This is structural work. Every jurisdiction on this site requires a residential building permit and a framing inspection for joist, girder, sill and pier repair.
When is floor joist repair the wrong purchase?
If the sag is confined to one small area near a bathroom or exterior door, the cause is usually a localized leak that rotted a single joist end, and that is a much smaller repair than a whole-floor scope.
More reading: Crawl Space Encapsulation Problems · Crawl Space Smells Like Cat Pee (And You Have No Cat) · Crawl Space Vents: Open or Closed in Georgia?