Basement waterproofing contractors serving St. Clair Shores, MI: licensed companies, typical costs, and what the risk data says
Which contractors state they serve St. Clair Shores, what their Michigan license records show, what the work typically costs, and how St. Clair Shores scores for basement-flood risk on public data.
4 contractors serving St. Clair Shores
Listed alphabetically. Each links to a public-record profile we keep, drawn from the contractor's own listings and Michigan licensing records. This is a directory of public facts, not an endorsement, and we do not rank or rate anyone.
Based in Fenton. Lists St. Clair Shores among the 10 communities its own site states it serves.
License: Michigan Maintenance & Alteration license (Basement Waterproofing classification), held by Denice Elizabeth Lustig, status Issued (expires May 31, 2029).See the full public record →Based in Eastpointe. Lists St. Clair Shores among the 35 communities its own site states it serves.
License: Michigan Residential Builder license, status Issued (expires May 31, 2028)See the full public record →Based in Bloomfield Township. Lists St. Clair Shores among the 73 communities its own site states it serves.
License: Michigan Residential Builder license (registered as MI BASEMENTS LLC), status Issued (expires May 31, 2029)See the full public record →Based in Chesterfield Township. Lists St. Clair Shores among the 9 communities its own site states it serves.
License: Michigan Residential Builder license (Thomas Beauchemin, individually licensed since 1996) plus a Maintenance & Alteration license held under the DBA “Toms Basement Waterproofing” (Basement Waterproofing classification), both status Issued (expire May 31, 2029).See the full public record →See where your home sits before you call
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Ready for a physical diagnosis? Ask any licensed contractor listed above for a professional on-site inspection. Our score is an indicative screening built from public data; only an on-site inspection can confirm the actual cause and the right fix for your St. Clair Shores home.
What the risk data says about St. Clair Shores
St. Clair Shores carries a Basement Risk Index of 68 out of 100, ranking #26 of 116 metro Detroit communities, high risk on our public-data index. It runs where it does mostly on housing age: 63% of St. Clair Shores homes were built before 1960, before sump pumps, perimeter drain tile, and backwater valves were standard, on the region's heavy clay soil. That is the context for the license and diagnosis questions here; the full driver table, the map, and how St. Clair Shores compares to its neighbors are on the St. Clair Shores basement-risk breakdown →
St. Clair Shores's sewers are combined citywide or nearly so. Storm runoff and sanitary sewage share one set of pipes, so a hard rain can push back up through the floor drain, which changes which fix to price first: a backwater valve usually matters more here than any wall treatment. See how we classified St. Clair Shores →
What basement waterproofing typically costs
With 63% of St. Clair Shores homes built before 1960, quotes here often involve original clay drain tile, so expect the middle of these ranges more often than the bottom. On St. Clair Shores's combined-sewer footprint, price the backwater valve before anything cosmetic.
- Foundation crack injection (per crack)$400–$1,200
- Sump pump, professional install$1,200–$3,800
- Backwater valve retrofit$1,500–$3,500
- Interior perimeter drain$5,000–$15,000
- Exterior excavation$10,000–$25,000+
2026 metro Detroit ranges, compiled June 2026 from regional contractor pricing and national cost surveys. Ranges are regional, not St. Clair Shores-specific. How to read a waterproofing quote →
Frequently asked questions
Why do basements flood in St. Clair Shores?
Mostly housing age and soil. 63% of St. Clair Shores homes were built before 1960, before sump pumps, exterior weeping tile, and backwater valves were standard, and the heavy clay soil across southeast Michigan holds water against those older foundations rather than draining.
Is a Basement Risk Index of 68 high for St. Clair Shores?
A score of 68 is above the metro Detroit median of 37 (U.S. Census ACS 2020-2024, updated July 2026), ranking #26 of 116 communities. It is worth a prevention check before the next heavy rain.
Does St. Clair Shores have combined sewers?
Yes, citywide or nearly so, per the operator and county records checked July 2026, so sewer backup, not just wall seepage, is a real failure mode here. See our metro combined-sewer map.
How many licensed contractors does this page list for St. Clair Shores?
4, each a public-record profile drawn from the contractor's own listings and Michigan licensing records, not a review or a ranking, and none paid for placement.