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Foundation repair & basement waterproofing · Eastpointe, MI

Calculus Foundation Repair & Waterproofing

An Eastpointe foundation and waterproofing contractor working the east side of metro Detroit, out across Macomb, Wayne, Oakland, and St. Clair counties.
10 of 12 fields documented, 2 to confirm
Public record last checked July 4, 2026. It is not an endorsement, and it does not publish reviews or ratings.
Who this record is for A foundation repair and basement waterproofing contractor based in Eastpointe, working the east side of metro Detroit and out into Macomb and St. Clair counties. Their stated work runs from interior and exterior waterproofing to structural fixes like helical piers, steel I-beam and carbon fiber wall reinforcement, and full foundation rebuilds. That fits an owner of an older east-side home dealing with water, a bowing wall, or a settling foundation. Every fact below is labeled with its source and the date we checked it.

At a glance

LicenseMichigan Residential Builder license, status Issued (expires May 31, 2028)Verified
Legal entityCalculus Foundation Repair & Waterproofing LLCVerified
In businessCompany states over 35 years of experience. BBB lists the business as started 2020.Verify
BBBBBB Accredited Business since November 2024 (entity type: LLC)Verified
WarrantyStates a no-cost lifetime warranty on waterproofing, foundation repair, helical piers, and crawl space encapsulationFound on site
TerritoryMacomb, Wayne, Oakland, and St. Clair counties, from Eastpointe and the Grosse Pointes to Warren, Sterling Heights, Royal Oak, Livonia, and TroyFound on site

Reputation across platforms

These are third-party ratings as published by each platform, with the date we checked. We did not collect or verify the underlying reviews and we publish no review text, only each platform's own count and average, linked to its source. Ratings change; the date tells you how fresh ours is.
BBB
A+ BBB ratingAccredited since November 2024checked 2026-07source
Google
5.0 out of 5 · 391 reviewschecked 2026-07source

What we verified, and what’s still unclear

Verified in public records Found on their website Needs confirmation
Website
calculusfoundation.comFound on site
Phone
(586) 400‑8400Found on site
Email
[email protected]Found on site
Address
23133 Gratiot Ave, Eastpointe, MI 48021Found on site
Hours
Not stated on their siteNeeds confirmation
Service area
Macomb, Wayne, Oakland, and St. Clair counties, from Eastpointe and the Grosse Pointes to Warren, Sterling Heights, Royal Oak, Livonia, and TroyFound on site
Legal business name
Calculus Foundation Repair & Waterproofing LLCVerifiedBBB
Owner / operator
Rich PiccirilliFound on site
Years in business
Company states over 35 years of experience. BBB lists the business as started 2020.VerifyBBB
Warranty
States a no-cost lifetime warranty on waterproofing, foundation repair, helical piers, and crawl space encapsulationFound on siteTheir site notes some scenarios may be excluded per the estimate. Confirm the exact terms and transferability in writing.
BBB profile
BBB Accredited Business since November 2024 (entity type: LLC)VerifiedBBB
Michigan license #
Michigan Residential Builder license, status Issued (expires May 31, 2028)VerifiedLARAHeld by Calculus Foundation Repair LLC.

Verified against the company's own website, public business and licensing records, and other public sources, July 2026.

Services offered

Found on their website (checked July 2026) · residential and commercial
Interior basement waterproofing Exterior basement waterproofing Foundation repair Helical pier installation Steel I-beam wall reinforcement Carbon fiber wall reinforcement Bowing basement wall repair Rod hole & crack injection Crawl space encapsulation Full foundation rebuilds
Not every basement problem is a waterproofing job. A strong sewage smell at a floor drain is usually a plumbing issue, call a licensed plumber. A bowing, cracked, or visibly shifting foundation wall is a structural issue, get a structural engineer before any water fix. A waterproofing contractor treats water intrusion, not the pipe or the wall itself.

Basement risk where they work

Their stated service area, colored by the Basement Risk Index · 0–100
Calculus Foundation Repair & Waterproofing stated service area, colored by the Basement Risk IndexMetro Detroit map. The land in communities Calculus Foundation Repair & Waterproofing states it serves is shaded from lower (green) to very high (dark red) basement risk on the 0 to 100 Basement Risk Index. Water and communities outside the stated service area are left as neutral ground.Detroit 93Hamtramck 96Grosse Pointe 94Huntington Woods 88Ferndale 85Dearborn 76St. Clair Shores 68Royal Oak 67Pontiac 56Roseville 55Livonia 48Warren 41Troy 20Sterling Heights 18Rochester Hills 15Novi 5Eastpointe officeCalculus Foundation Repair & Waterproofing: stated service areaBasement Risk Index · basementriskcheck.comBASEMENT RISK INDEX020356080100LOWERMODERATEELEVATEDHIGHVERY HIGHTheir office. Paper ground is outside the stated service area.
Shading shows where basement-flood risk concentrates within the service area this company states on its own website (checked July 2026). It reflects our risk index for those communities, not this company's job volume. They also state service into St. Clair County and Washington Township, which sit outside the three-county index. Built from the same data as the metro risk map.
Highest-risk communities they serve
Hamtramck96
Grosse Pointe94
Detroit93
Huntington Woods88
Ferndale85
Eastpointe81
Their east-side service area includes some of the metro's oldest, highest-risk housing, Grosse Pointe (96), Detroit (92), and Hamtramck (91), where interior drains and backwater valves matter most, alongside their home city of Eastpointe (77). Detroit's score blends real City of Detroit 311 flood records. The suburbs are modeled from housing age and labeled as such. See methodology or the full 116-community ranking.

Questions to ask this contractor

Based on the open items in this record and the risk profile of the area they serve
  1. "What is your Michigan residential builder license number?"We matched an Issued Residential Builder license for Calculus Foundation Repair LLC in the state's LARA record. Ask for the number and confirm it yourself at LARA's license search.
  2. "How many years has Calculus itself been operating?"The site says over 35 years of experience, but the company's BBB profile lists it as started in 2020. Ask what the 35-year figure refers to.
  3. "Is the lifetime warranty transferable if I sell, and what does it exclude?"They advertise a no-cost lifetime warranty with some exclusions stated on the estimate. Get the coverage, the exclusions, and the transferability in writing.
  4. "For a bowing wall, do you recommend I-beams, carbon fiber, or piers, and why?"They offer all three. A good contractor ties the fix to how your wall is actually moving, not a default product. See our guide to choosing a contractor.
  5. "Do you recommend a backwater valve for my block, and is it in the quote?"Much of their east-side service area sits in combined-sewer territory, where city-main backups, not just seepage, are the flood path. See our combined-sewer overlay.

Contractors serving the same area

Other public records with an overlapping service area, for comparison. Not a ranking or a recommendation.
Michigan BasementsView the public record → Perma Dry MichiganView the public record → Atlantic Coast WaterproofingView the public record →

Source log

Every public source cited in this record, in one place
About this record This is a public record compiled from public sources. Calculus Foundation Repair & Waterproofing can confirm or correct any field at any time. We do not publish third-party reviews or ratings, and nothing here is a judgment about the quality of any contractor's work. Compiled from the company's own website, public business and licensing records, and other public sources. Homeowners should verify a contractor's current Michigan license directly through LARA and confirm insurance and warranty terms in writing before hiring. How we verify.

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