Verified record
TWC Phoenix is a Boston/Ashland commercial waterproofing, masonry, historic restoration, and general contracting company, formed in 2023 when The Waterproofing Company (incorporated in New York in 1905, based in Boston since the 1920s) merged with Phoenix Bay State Construction (founded in Boston in 1974 by Bob Asmar and Bill Whall). It describes itself as a division of Greenwood Enterprises, which it says ranks among the top 10 commercial roofing and building envelope contractors nationally. The public review record here is thin — just three Google reviews spanning 2022 to 2024. In a 2022 review, predating the 2023 merger, a customer described the team at this Chesterton Street location, including someone named Chris, as helpful for waterproofing needs and noted the business had been established there for 17 years. A brief 2024 review simply called the service professional. On the other side, a 2023 review described the staff as unprofessional and rude, without further detail about the job involved. Given the long institutional history on both sides of the merger and the very small number of public reviews, there isn't enough here to characterize typical customer experience with confidence — ask for recent references on a comparable job before hiring, especially since this looks like a firm that primarily takes on larger commercial and historic-building work.
Professional Service
Not professional, very rude.
Great place for all your waterproofing needs Chris and the rest of the staff very helpful established business here now on Chesterton Street for 17 years
Typical Greater Boston range for this kind of work, from regional averages — not a quote from TWC Phoenix. Use it to sanity-check bids, then get the real number in writing.
Not sure which you need? Start with an inspection — many reputable companies assess free, and independent assessments run up to $500.
The wall run getting the drain — a full 30×40 ft basement is about 140 ft.
Estimated range
$7,600 – $15,000
Typical waterproofing project around $11,300
Specializes in
Also offers
Languages
1 change recorded — last scanned Jul 1, 2026.
Basement waterproofing5.0
Retaining walls5.0
Bulkhead replacement4.8
Brick and 1850s fieldstone foundations repointed4.8
Structural carpentry4.8
Owner-led communication4.8
Wide masonry range4.6