Verified ranking
Best Concrete Leveling 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.
The deepest verified review base in this set (4.8 across 676 Google reviews, June 2026) and the clearest current concrete-specific record. Erickson publishes a dedicated PolyLevel page for driveways, walkways, patios, pool decks, and slabs in southern New Hampshire and parts of Massachusetts, with project examples and a named system. Its small Yelp sample is lower at 3.3 across 19 reviews, so the Google depth should not be read alone. Confirm the address and the written concrete-repair warranty.
The strongest proportional Google record in the set (5.0 across 262 reviews, all five-star in the August 2026 distribution) with a current concrete-leveling page for New Hampshire, Maine, and Massachusetts. The page makes a useful condition distinction: repairable settled concrete may be leveled, while badly broken concrete may require replacement, and basement-floor work is limited when the concrete acts as the building structural slab. 603 does not publish one required leveling material for every job, so Bedrock does not infer one. Confirm the proposed method and concrete-specific warranty in writing.
A deep local Google record (4.9 across 567 reviews, June 2026) and a current national concrete-lifting service page with a named polyurethane system. The nearest New Hampshire branch is the former Rescon operation in Hooksett. It ranks behind the two local firms because the corporate BBB profile carried 741 complaints closed in three years as of June 2026, with service or repair the largest category. Confirm local availability, the contracting entity, and warranty service before signing.
Also serving the area
A Londonderry local independent with a current concrete-leveling page for New Hampshire and surrounding areas and a 4.8 rating across 52 Google reviews as of May 2026. The review base is materially smaller than the ranked firms, and published warranty language is general rather than a retrieved concrete-specific term, so it remains an additional quote rather than a ranked entry.
A Wells, Maine Foundation Supportworks dealer with a current PolyLevel FAQ and a published list of eastern New Hampshire towns. Its 4.7 rating across 342 Google reviews as of April 2026 provides useful depth, but the service area is not statewide and its written concrete-specific warranty terms were not independently retrieved. Check the address and proposal terms.
Side-by-side
| Company | Type | Google (dated) | Named system | Published warranty | BBB |
|---|---|---|---|---|---|
| Erickson Foundation Solutions | local national brand | 4.8 / 676 | PolyLevel (company-published) | Concrete-specific terms not independently verified. | A+, accredited 2015, 2 complaints (3yr) |
| 603 Basement Solutions | local independent | 5.0 / 262 | None published | Concrete-specific terms not verified. | A+, BBB accredited since 2022 |
| Groundworks | national consolidator | 4.9 / 567 | PolyRenewal (company-published) | Concrete-specific terms not independently 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 published | General warranty availability published; concrete-specific terms not retrieved. | Not assessed here |
| TC Hafford Basement Systems | local national brand | 4.7 / 342 | PolyLevel (company-published) | Concrete-specific terms not independently verified. | Not assessed here |
Other services in New Hampshire
- Best Bowing Wall Repair in New Hampshire
- Best Helical Pier Installation in New Hampshire
- Best Foundation Settlement Repair in New Hampshire
- Best Foundation Crack Repair in New Hampshire
- Best Sagging Floor Repair in New Hampshire
- Best Fieldstone Foundation Repair in New Hampshire
Data verified as of the dates shown; star ratings change over time. See our methodology.