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The 10 Best Foundation Repair Companies in Charleston (2026)
Charleston homeowners face unique foundation and crawlspace challenges driven by coastal humidity, salt air, high groundwater and a stock of older homes. This list ranks local firms based on Google reviews using a Bayesian-weighted score that balances average rating with review volume, updated for 2026. The aim is to highlight companies whose high scores reflect both strong feedback and enough customer experience to be meaningful. Use this as a starting point when researching contractors, then confirm licensing, warranties, and on-site assessments before hiring.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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South Carolina Water and Fire
South Carolina Water and Fire tops our list with a perfect 5.0 Google rating from 348 reviews, giving it a strong Bayesian score because of both high marks and substantial review volume. Listed as a Water damage restoration service, the company’s name and category indicate a focus on water-related structural issues that frequently affect foundations in the Lowcountry. Those combined factors push it ahead in our methodology.
The full ranking
Crawlspace Medic of Charleston
Crawlspace Medic of Charleston is rated 5.0 with 253 Google reviews and appears as a Waterproofing service; the listing shows an address in Mt Pleasant.
253 reviews
Charlestowne Crawlspace
Charlestowne Crawlspace has a 5.0 rating based on 50 reviews and is categorized as a Waterproofing service with an address in Charleston (29414).
50 reviews
Jackson Building LLC
Jackson Building LLC carries a 5.0 Google rating from 33 reviewers and is listed as a Custom home builder located in Charleston (29401).
33 reviews
Southeastern Foundation and Crawl Space Repair
Southeastern Foundation and Crawl Space Repair appears with a 5.0 rating from 27 Google reviews and is categorized simply as a Contractor; the address is in Camden, SC.
27 reviews
Palmetto Crawlspace
Palmetto Crawlspace is shown as a Waterproofing service with a 5.0 Google rating and 23 reviews, and the listing includes an Mt Pleasant address.
23 reviews
RhinoLift Foundation Solutions
RhinoLift Foundation Solutions holds a 5.0 rating from 20 Google reviewers and is categorized under Foundation services, with an address in Charleston (29407).
20 reviews
Carolina Construction of Charleston
Carolina Construction of Charleston has a 5.0 Google rating based on 20 reviews and is listed as a General contractor; no address is shown in the Google data provided here.
20 reviews
Holy City Heating & Air, LLC
Holy City Heating & Air, LLC carries a 4.9 rating from 1,202 Google reviews and is categorized as an HVAC contractor with an address in Charleston (29401).
1202 reviews
Lowcountry Foundation and Crawl Space Repair
Lowcountry Foundation and Crawl Space Repair holds a 4.9 Google rating from 1,172 reviews, is listed as a Waterproofing service, and the Google address is in Rincon, GA.
1172 reviews
Frequently asked questions
How should I choose a foundation repair company in Charleston?
Look for companies with strong local reviews, clear documentation of licensing and insurance, and references for similar local jobs. Prioritize firms that offer written estimates after an on-site inspection and can explain the proposed fixes in plain language.
What should I check before hiring a contractor for foundation or crawlspace work?
Verify the contractor’s license and insurance, ask for a written scope of work and timeline, and request details about warranties or guarantees. Also get multiple estimates so you can compare proposed methods, materials, and expected outcomes.
When should I call a foundation or crawlspace specialist?
Call a specialist if you notice signs like new or widening cracks in walls, doors and windows that stick, uneven floors, persistent moisture or musty odors in a crawlspace, or sudden changes after heavy rain. Early assessment can prevent more extensive damage.
How was this ranking built and why does review volume matter?
This list uses Google review ratings combined with a Bayesian-weighted score that balances average rating and the number of reviews; that helps surface businesses with both high scores and substantial customer feedback. A high rating with many reviews is more statistically reliable than the same rating based on only a few reviews.