Verified ranking · Updated June 2026
Best Foundation Repair in Nashua, NH
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.
A family-owned firm next door in Hudson and a Foundation Supportworks dealer (helical piers, wall anchors), carrying the deepest verified review base here (4.8 across 676 Google reviews, June 2026), a clean BBB record (A+, accredited 2015, 2 complaints in three years), and direct local accountability. The strongest blend of structural capability and local ownership for Nashua.
Serves Nashua with a patented national structural product line (IntelliJack piers, wall stabilization) and a high rating (4.9 across 567 Google reviews). It ranks second on our methodology because it is a national consolidator (HQ Virginia Beach, VA) whose warranty service runs through the national company, and its corporate BBB profile shows 741 complaints closed in three years, about 69 percent service or repair.
A Londonderry foundation repair and concrete contractor (4.8 across 52 Google reviews) that serves the Nashua area, handling foundation repair, crack repair, and concrete leveling. Review themes of reasonable pricing and knowledgeable staff make it a solid local option for repair and leveling.
Also serving the area
The Manchester-area foundation crack-injection specialist (epoxy and urethane), multi-region and within reach of Nashua. The right call for a single cracked or leaking foundation wall rather than structural piering (4.8 across 51 reviews).
Side-by-side
| Company | Type | Google (June 2026) | Named system | Published warranty | BBB |
|---|---|---|---|---|---|
| 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) |
| Groundworks | national consolidator | 4.9 / 567 | Patented national product line (IntelliJack, AquaStop) | Lifetime, transferable, nationally backed (verbatim terms not verified). | A+ (corporate); 741 complaints closed in 3 years, 514 Service/Repair (~69%), per BBB national profile, accessed June 2026 |
| Arta Foundation Repair | local independent | 4.8 / 52 | None | Not stated on its website; ask at quote. | Not assessed here |
| Crack-X | local national brand | 4.8 / 51 | The Crack-X process (epoxy/urethane crack injection; not full perimeter drainage) | 10-year transferable warranty on most wall cracks. | A+ but not accredited (Manchester profile) |
Head-to-head comparisons
- Local Independent vs National Consolidator
- 603 Basement Solutions vs Crack-X
- Groundworks vs Erickson Foundation Solutions
- Crack-X vs Groundworks
- Crack-X vs Arta Foundation Repair
Other services in Nashua, NH
- Best Basement Waterproofing in Nashua, NH
- Best Crawl Space Encapsulation in Nashua, NH
- Best Radon Mitigation in Nashua, NH
Data verified as of the dates shown; star ratings change over time. See our methodology.