Verified ranking · Updated June 2026
Best Helical Pier Installation in New Hampshire
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 Foundation Supportworks dealer with the deepest documented structural helical-pier track record in this set, including piers installed up to 60 feet deep under footings in Manchester, plus the deepest verified review base of any firm here (4.8 across 676 Google reviews, June 2026), family-owned local accountability, and a clean BBB record. The structural-helical leader for a settling or sinking home.
Installs helical and push piers in-house to stabilize and lift settling homes across NH, ME, and MA, per its own materials, alongside waterproofing, foundation, and radon work. Locally owned in East Kingston with the second-deepest review base here (4.9 across 250 Google reviews) and a published guarantee. A genuine in-house structural-pier option, strongest on the Seacoast and southern NH.
Installs a patented national pier product line (IntelliJack) for foundation settlement, with national scale and financing (4.9 across 567 Google reviews). It ranks third on our methodology as a national consolidator whose warranty service runs through the national company, with 741 BBB complaints closed in three years, about 69 percent service or repair.
Also serving the area
A certified GoliathTech helical (screw) pile installer in Salem serving the whole state (5.0 across 18 Google reviews), with a patented screw-pile system. Strongest for deck footings and new-construction support rather than settling-home foundation repair, a different use of the same technology.
www.goliathtechpiles.com/installer/helical-screw-piles-new-hampshire
A Basement Systems dealer in Wells, ME serving the Seacoast that also installs commercial and residential helical piles (4.7 across 342 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) |
| 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 |
| 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 |
| GoliathTech | local national brand | 5 / 18 | GoliathTech patented helical (screw) pile system | Not independently verified; ask at quote. | Not assessed here |
| 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 |
Data verified as of the dates shown; star ratings change over time. See our methodology.