Company lists · Data verified August 2026
Top 25 Basement waterproofing companies based in the United States
There are 553 basement waterproofing companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 8,260 professional contacts across them, including 2,109 with verified work emails and 3,154 with mobile numbers. Louisville is the largest hub.
This list covers basement waterproofing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.
The 25 largest basement waterproofing companies based in the United States
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 |  Groundworks | 509 |
| 2 |  RAM Construction Services | 138 |
| 3 |  JES Foundation Repair | 94 |
| 4 |  Aquaguard Foundation Solutions | 62 |
| 5 |  Foundation Recovery Systems | 74 |
| 6 |  Basement Systems, INC | 26 |
| 7 |  Olshan Foundation Repair | 36 |
| 8 |  Cantey Foundation Specialists | 44 |
| 9 |  Helitech Waterproofing & Foundation Repair | 47 |
| 10 |  AFS Foundation & Waterproofing Specialists | 69 |
| 11 |  Perma-Seal Basement Systems | 34 |
| 12 |  Ohio Basement Authority | 47 |
| 13 |  Ayers Basement Systems | 33 |
| 14 |  DBS Repair | 12 |
| 15 |  '58 Foundations & Waterproofing | 60 |
| 16 |  Acculevel INC | 33 |
| 17 |  Woods Basement Systems, INC | 7 |
| 18 |  Ohio State Waterproofing | 10 |
| 19 |  Foundation Systems Of Michigan | 44 |
| 20 |  DRY PRO Foundation And Crawlspace Specialists | 26 |
| 21 |  Frontier Foundation & Crawl Space Repair | 8 |
| 22 |  United Structural Systems | 22 |
| 23 |  American Waterworks | 31 |
| 24 |  Indiana Foundation Service | 28 |
| 25 |  U.S. Waterproofing | 31 |
Showing 25 of 553 basement waterproofing companies based in the United States
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Basement waterproofing companies based in the United States at a glance
As of Aug 28, 2026Companies by employee count
Basement waterproofing companies by metro
| Metro | Companies |
|---|---|
| Basement waterproofing companies in Louisville | 8 |
| Basement waterproofing companies in Rochester | 6 |
| Basement waterproofing companies in Charlotte | 5 |
| Basement waterproofing companies in Winston-Salem | 4 |
| Basement waterproofing companies in Baltimore | 4 |
| Basement waterproofing companies in Portland | 4 |
| Basement waterproofing companies in Marietta | 4 |
| Basement waterproofing companies in Dallas | 4 |
How this list was built
- Source
- The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
- Inclusion
- Companies whose own business descriptions match “basement waterproofing companies”, with match quality audited by blind human judging, and headquartered in the United States.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Contact records re-verify on a rolling cadence; 10 contacts on this list were re-verified in the last 30 days.
- Refresh
- Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.
Frequently asked
How many basement waterproofing companies are there based in the United States?
There are 553 basement waterproofing companies headquartered in the United States as of August 2026 (RevenueBase).
What is the largest company on this list?
Groundworks, headquartered in Grand Junction, tops this list with the largest team on record.
Which city has the most basement waterproofing companies?
Louisville leads with 8 headquartered companies, followed by Rochester (6) and Charlotte (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,109 verified decision-maker contacts tracked across these 553 companies.
How current is this list?
The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.
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About this data
RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.
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