Verified ranking · Updated June 2026
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 (4.9 across 250 Google reviews, June 2026, against 20 and 12 for the two specialists Google lists first). Locally owned in East Kingston, it installs a self-branded system, publishes a transferable guarantee, and handles 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, so it handles engineered piering too; for the deepest documented pier track record, weigh the Foundation Supportworks dealer under also serving.
The Google pack leader around Exeter and a focused foundation specialist in Hampstead since 1985 (4.8 across 20 Google reviews). 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. A structural-piering option for the Seacoast, with documented deep helical-pier installs.
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, 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 | 4.9 / 250 | 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 / 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.