Verified ranking
Best Basement Waterproofing in the North Shore, MA
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.
Leads on the weighted standard rather than on local-map position, which it does not own here. It carries the deepest clean review record of this group (4.9 across 250 Google reviews, 97.6 percent five-star on its dated distribution, June 2026), and it is the only locally owned company here that runs its own branded whole-basement system, the Forever Dry System, with a transferable "Dry for Life" guarantee its own crews service (the national brands below install a national product line instead), plus the broadest in-house scope (waterproofing, structural and foundation repair, crawl space, radon) and a BBB A+ rating, accredited since 2022. 603 ranks first on review depth, its own serviced system, the warranty, and scope; the two 5.0 locals rank just behind.
The strongest North Shore local here, and the closest to 603. It out-rates 603 on raw stars (5.0 across 107 Google reviews, with 106 of those five-star and a single one-star, June 2026) and ranks on page one for North Shore basement waterproofing searches, and it covers all three core trades in-house. It ranks second only on review depth (about 107 versus 250) and because it publishes no named system or transferable warranty terms for a buyer to check in advance, where 603 does.
Carries a perfect proportional record (5.0 across 165 Google reviews, the dated distribution showing 157 of 157 rated reviews at five stars, June 2026) and a spotless BBB record (accredited 2025, 0 complaints in three years). It works the MA and NH border from Plaistow and reaches the North Shore. It ranks third because its verified scope here is interior drainage and sump work rather than the broader system plus warranty 603 publishes, and it carries no named system or published warranty terms.
A Greater Boston and North Shore independent with a perfect rating on a smaller base (5.0 across 43 Google reviews, June 2026), with review topics centered on basement waterproofing, foundation repair, and French drain work. It ranks below the firms above on review depth and because it publishes no named system or transferable warranty terms.
Also serving the area
The national option. It maintains a dedicated Danvers, MA service-area page and ranks in organic results for the region rather than the North Shore local pack, and it markets a lifetime warranty and an A+ BBB on that page. It is a national consolidator headquartered in Virginia Beach, VA, with warranty service running through the national company, and its corporate BBB profile shows 741 complaints closed in three years, about 69 percent of them service or repair (June 2026).
A regional family firm that installs the national Basement Systems product line rather than a system of its own. It publishes a dedicated Salem, MA service page and ranks in organic results for the North Shore. Strong on Google statewide (4.8 across 676 in its home market); a separate North Shore Google rating was not retrieved, and its Yelp listing is a small, filtered sample (3.3 across 19).
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 |
| Bigfoot Waterproofing | local independent | 5 / 107 | None | Not stated on its website; ask at quote. | Not assessed here |
| Reliable Basement Waterproofing | local independent | 5 / 165 | None | No warranty terms published on its website (may be presented at quote). | A+, BBB accredited 2025, 0 complaints (3yr) |
| MasonryKing | local independent | 5 / 43 | None | Not stated on its website; ask at quote. | Not assessed here |
| 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 |
| 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) |
Head-to-head comparisons
- Groundworks vs 603 Basement Solutions
- 603 Basement Solutions vs Erickson Foundation Solutions
- Local Independent vs National Consolidator
- 603 Basement Solutions vs Crack-X
- Reliable Basement Waterproofing vs 603 Basement Solutions
- Groundworks vs Erickson Foundation Solutions
- 603 Basement Solutions vs NH Dry Basement
- Crack-X vs Groundworks
- TC Hafford Basement Systems vs 603 Basement Solutions
Other services in the North Shore, MA
Data verified as of the dates shown; star ratings change over time. See our methodology.