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Basement waterproofing · Plymouth, MI

Perma Dry Michigan

Serves Plymouth, Canton, Livonia, Westland, Detroit, Dearborn, the Downriver communities, and more of southeast Michigan.
11 of 12 fields documented, 1 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 residential and commercial basement waterproofing contractor based in Plymouth, working across western Wayne County, Detroit, and the Downriver communities. Their stated services run from crack and tie-rod repairs to full interior drain systems, sump pumps, and crawlspace work, which fits owners of the area's older basements dealing with water after rain. 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, 2029)Verified
Legal entityPermadry Michigan Waterproofing LLC (also listed as Perma Dry LLC)Verified
In businessCompany states 30+ years. BBB lists it as started 2016.Verify
BBBBBB Accredited Business since December 2022 (as Permadry Michigan Waterproofing LLC)Verified
TerritoryDetroit, Canton, Plymouth, Romulus, Westland, Livonia, Northville, Southfield, Rochester Hills, West Bloomfield, Dearborn, Wayne, Ypsilanti, Pittsfield Twp, and the Downriver communities (Taylor, Southgate, Wyandotte, Allen Park, Flat Rock, Riverview, Trenton, Woodhaven)Found 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 December 2022checked 2026-07source
Google
4.9 out of 5 · 435 reviewschecked 2026-07source
Angi
4.9 out of 5 · 230 reviewschecked 2026-07source

What we verified, and what’s still unclear

Verified in public records Found on their website Needs confirmation
Website
permadrymi.comFound on site
Phone
(734) 800‑1355Found on site
Email
[email protected]Found on site
Address
1098 Ann Arbor Rd, Ste 654, Plymouth, MI 48170Found on site
Hours
Mon–Fri 8:00 AM – 5:00 PM, Sat 8:00 AM – 3:00 PM ET, Sun closedFound on site
Service area
Detroit, Canton, Plymouth, Romulus, Westland, Livonia, Northville, Southfield, Rochester Hills, West Bloomfield, Dearborn, Wayne, Ypsilanti, Pittsfield Twp, and the Downriver communities (Taylor, Southgate, Wyandotte, Allen Park, Flat Rock, Riverview, Trenton, Woodhaven)Found on site
BBB profile
BBB Accredited Business since December 2022 (as Permadry Michigan Waterproofing LLC)VerifiedBBB
Certification
ICC-ES certified (their site cites ESR-3815)Found on siteCompany's own statement, not yet matched against the ICC-ES public directory.
Years in business
Company states 30+ years. BBB lists it as started 2016.VerifyBBB
Legal business name
Permadry Michigan Waterproofing LLC (also listed as Perma Dry LLC)VerifiedBBB
Michigan license #
Michigan Residential Builder license, status Issued (expires May 31, 2029)VerifiedLARAHeld by Permadry Michigan Waterproofing LLC.
Owner / operator
Matt WestVerifiedBBBAlso named on the company's about-us page.

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 Jul 2, 2026) · residential and commercial
Interior drain systems Sump pump install & repair Backup sump pumps Foundation crack repair Exterior waterproofing (tar & seal) Tie-rod hole leaks Wall stabilization Crawlspace repair & encapsulation Yard drainage & downspout extensions Vapor barriers Dehumidifiers Window-well repair
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.

Their work, in their photos

Published on permadrymi.com · used with permission
PDPerma Dry Michigan exterior foundation waterproofing at a cracked wall corner
Exterior foundation waterproofing and crack sealing
PDPerma Dry Michigan interior perimeter drain tile with wall vapor barrier
Interior perimeter drain and wall vapor barrier
PDPerma Dry Michigan sump pump install with battery backup
Sump pump with battery backup

Basement risk where they work

Their stated service area, colored by the Basement Risk Index · 0–100
Perma Dry Michigan stated service area, colored by the Basement Risk IndexMetro Detroit map. The land in communities Perma Dry Michigan 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 93Wyandotte 82Dearborn 76Taylor 50Livonia 48Westland 39Southfield 37Romulus 33West Bloomfield 20Rochester Hills 15Canton 6Plymouth officePerma Dry Michigan: 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 Jul 2, 2026). It reflects our risk index for those communities, not this company's job volume. Ypsilanti, Pittsfield Twp, and the Irish Hills/Adrian area are also stated but sit outside the three-county index. Built from the same data as the metro risk map.
Highest-risk communities they serve
Detroit93
Wyandotte82
Allen Park79
Dearborn76
Wayne62
Northville43
Their service area spans some of metro Detroit's oldest, highest-risk housing, Detroit (92), Wyandotte (79), and Allen Park (77), where interior drains and backwater valves matter most, alongside newer, lower-risk suburbs like Canton (3) and Rochester Hills (13). 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 Permadry Michigan Waterproofing LLC in the state's LARA record. It is still worth asking for the number and confirming it yourself at LARA's license search.
  2. "What legal business name will be on my contract?"Public listings show more than one name for this business. The name on the contract is the one your warranty lives with.
  3. "Is the warranty transferable if I sell, and what exactly does it cover?"In older, high-risk communities like Detroit, Wyandotte, and Allen Park, a transferable waterproofing warranty is a real selling point for the house.
  4. "Do you recommend a backwater valve for my block, and is it in the quote?"Much of their service area sits in combined-sewer territory, where city-main backups, not just seepage, are the flood path. See our combined-sewer overlay.
  5. "Can I get the diagnosis and itemized scope in writing before signing?"Our guide to choosing a contractor covers how to compare quotes and the red flags to watch.

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 → Calculus Foundation Repair & WaterproofingView the public record → HomeSpec Waterproofing and Foundation RepairView 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. Perma Dry 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. The logo shown is the company's own mark, displayed from their website to identify the business, and the company can replace or remove it at any time by contacting us. 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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