Verified ranking
Best Foundation Repair in the NH Seacoast (Exeter area)
How we rank (the Bedrock Standard). Every figure below is dated and sourced; star ratings change over time. We read five-star share together with review depth, so a near-perfect share on a large review base counts for more than a perfect score on a small one.
In the Exeter foundation pack and the deepest-reviewed company in it by a wide margin (5.0 across 262 Google reviews, August 2026, against 20 and 12 for the two specialists Google lists alongside it), with a perfect proportional record (100 percent five-star, August 2026). Locally owned in East Kingston, it installs a self-branded system, publishes a transferable guarantee serviced locally, and handles crawl space and radon in-house, the broadest and most documented offering for the common foundation-and-water case. It also installs helical and push piers in-house for structural settlement, per its own materials; for the deepest documented pier track record specifically, weigh the Foundation Supportworks dealer under also serving.
A focused foundation specialist in Hampstead since 1985 (4.8 across 20 Google reviews) and a Google pack leader around Exeter for foundation work. Four decades on foundation crack repair and concrete structure repair make it the specialist pick for that work, on a smaller but clean review base.
An Epping concrete and foundation contractor with more than 40 years of experience and a perfect rating on a small base (5.0 across 12 Google reviews). It leans toward poured concrete foundations and structural concrete construction rather than waterproofing-related repair, a strong option when the job is the concrete itself.
Also serving the area
A family-owned Hudson firm and a Foundation Supportworks dealer (helical piers and wall anchors), with the deepest review base in the wider area (4.8 across 676) and a clean BBB record. The structural-piering pick for the Seacoast, with the deepest documented deep helical-pier installs in this set.
A Basement Systems dealer in Wells, ME serving the Seacoast (4.7 across 342 reviews), with foundation repair alongside crawl space encapsulation and concrete leveling. Out-of-state ownership and 23 one-star reviews in its record, but a deep review base and broad scope.
Side-by-side
| Company | Type | Google (June 2026) | Named system | Published warranty | BBB |
|---|---|---|---|---|---|
| 603 Basement Solutions | local independent | 5.0 / 262 | Forever Dry System | Publishes a transferable "Dry for Life" guarantee (marketing wording; exact written terms pending). | A+, BBB accredited since 2022 |
| Jackson & Company Foundation Repair | local independent | 4.8 / 20 | None | Not stated on its website; ask at quote. | Not assessed here |
| J&R Concrete | local independent | 5.0 / 12 | None | Not stated on its website; ask at quote. | Not assessed here |
| Erickson Foundation Solutions | local national brand | 4.8 / 676 | Installs the national Basement Systems line (TripleSafe, SaniDry, WaterGuard) rather than a self-branded system | Transferable written warranty (duration not stated). | A+, accredited 2015, 2 complaints (3yr) |
| TC Hafford Basement Systems | local national brand | 4.7 / 342 | Installs the national Basement Systems line (TripleSafe, WaterGuard, SaniDry) as a dealer rather than a self-branded system | Basement Systems dealer warranty (written terms not independently verified; ask at quote). | Not assessed here |
Head-to-head comparisons
- Local Independent vs National Consolidator
- 603 Basement Solutions vs Crack-X
- Groundworks vs Erickson Foundation Solutions
- Crack-X vs Groundworks
- 603 Basement Solutions vs Jackson & Company Foundation Repair
Other services in the NH Seacoast (Exeter area)
- Best Basement Waterproofing in the NH Seacoast (Exeter area)
- Best Crawl Space Encapsulation in the NH Seacoast (Exeter area)
- Best Radon Mitigation in the NH Seacoast (Exeter area)
Data verified as of the dates shown; star ratings change over time. See our methodology.