Services Hub
Foundation repair, by method.
Each method below has its own page with a real cost range, project examples from Chattanooga homes, and a comparison against the next-best alternative. Pick the symptom you're seeing or start with a free quote and we'll tell you which fix you need.
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Foundation repair methods we use
Basement Waterproofing
Typical range
$2,300 – $7,600
Basement waterproofing combines interior drainage, exterior membrane application, sump pump systems, and crack injection to keep water out of basement spaces. The right combination depends on whether moisture enters through walls (hydrostatic pressure), through the wall-floor joint (saturated soil), or through specific cracks. Cost is $2,300 to $7,600 per Bob Vila's May 2024 guide. Most installations take 2 to 7 days depending on exterior vs interior approach.
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Crawl Space Repair / Encapsulation
Typical range
$700 – $25,000
Crawl space encapsulation seals the under-floor space with a heavy polyethylene vapor barrier across the floor and walls, sealed penetrations and vents, and a dedicated dehumidifier to maintain target humidity. The result is a conditioned, sealed crawl that protects pier-and-beam structure from moisture damage and prevents humid crawl air from entering the home above. Cost runs $700 to $25,000 per project per Bob Vila's May 2024 guide depending on scope.
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Helical Piers
Typical range
$1,000 – $3,000
Helical piers are steel shafts with helix-shaped bearing plates that are rotated into stable soil using a hydraulic torque motor. Once installed, brackets transfer the foundation load from settled surface soils onto the pier shaft. Cost is $1,000 to $3,000 per pier per Bob Vila's May 2024 cost guide, with most residential jobs requiring 6 to 12 piers. Installation typically takes 2 to 3 days.
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Mudjacking
Typical range
$500 – $1,300
Mudjacking lifts settled concrete slabs by pumping a cement-based slurry through small holes drilled in the slab. The slurry fills voids beneath the concrete and raises the slab back to its original elevation. Best for exterior concrete: driveways, sidewalks, patios. Cost is $500 to $1,300 per area per Bob Vila's May 2024 cost guide. Installation is a single-day job with 24 to 48 hours of cure time before vehicle traffic.
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Pier and Beam Repair
Typical range
$700 – $25,000
Pier and beam repair fixes crawlspace foundations where the home sits on masonry piers and wood beams above a ventilated crawl. Work includes replacing rotted beams, sister-ing sagging joists, shimming or rebuilding piers that have settled, and adding new piers where original supports are too widely spaced. Cost ranges $700 to $25,000 per Bob Vila's May 2024 guide, with crawlspace access and scope driving project length of 2 to 5 days.
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Polyurethane Foam Leveling
Polyurethane foam leveling lifts settled concrete by injecting a two-part expanding foam through 5/8-inch holes drilled in the slab. The foam combines at the injection point, expands about 25 times its liquid volume to fill voids and raise the slab, then cures rigid within roughly 15 minutes. Lightweight (2 to 4 lb per cubic foot), precise (1/8 inch lift accuracy), and best suited to soft soils, interior lifts, and applications where weight matters.
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Slab Foundation Repair
Typical range
$350 – $20,000
Slab foundation repair stabilizes slab-on-grade homes whose concrete pads have settled, heaved, or cracked. The right method depends on the cause: pier underpinning halts further settlement, slabjacking lifts slabs by injecting cement slurry, polyurethane foam injection lifts lightweight sections, and crack injection seals cosmetic fractures. Project cost runs $350 to $20,000 per Bob Vila's May 2024 cost guide. Typical timeline is 3 to 7 days.
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Steel Push Piers
Typical range
$1,000 – $3,000
Steel push piers are hydraulically driven sections of galvanized steel tubing that reach stable bearing soil or bedrock beneath a settling foundation. The hydraulic ram uses the building's own weight as the reaction force to push each pier section to refusal. Cost is $1,000 to $3,000 per pier per Bob Vila's May 2024 cost guide. Installation takes 2 to 4 days on a typical 6 to 12 pier residential project.
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