Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Supreme Waterproofing. 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
Supreme Waterproofing is a Holden-based basement waterproofing specialist — sump pumps, French drains, foundation crack repair, and crawl space encapsulation — founded in 2014 by Nicholas Stewart, who says he worked his way up from laborer to foreman over a decade in the trade before starting the company. Its Massachusetts home improvement contractor registration is active, and the business is a Massachusetts Supplier Diversity Office-certified Minority Business Enterprise and Disadvantaged Business Enterprise, both verified active. French drains and sump pumps are the clear specialty across years of reviews. A 2021 review describes a basement that used to flood after every heavy rain staying dry after the system was installed, and a 2023 review describes a tougher case — a hillside home with water coming through basement walls on three sides, resolved despite no property access for heavy equipment. A 2025 review describes a first-time homebuyer's basement flooding the first week after closing, fixed the same day Nick was called with a plan clearly explained to buyers who knew nothing about sump pumps and drains going in. One review stands out for what it says about how the business operates: a 2025 review describes a free inspection where Nick told the homeowner to wait before doing anything, rather than pushing work that wasn't needed. A 2026 review from a real estate investor describes using the company across several properties for its pricing and service. All 14 reviews on Google, from 2021 through 2026, are five stars. Recent activity is thinner — one review in the past six months — but the years of specific, detailed praise for French drain and sump pump work, backed by a verified state license and verified diversity certifications, make a solid case for basement waterproofing in the Worcester area.
“Supreme waterproof is a customer of mine, really nice guy.”
“My fiance and I had water in the basement the very first week after buying our first home. Nick came the same day and was able to throughly explain his waterproofing approach.”
“Nick did an excellent job of moisture sealing the basement in our new home. He was extremely professional at every step of the process... I can not recommend him more enthusiastically! - Kristin Crane”
Nick and his team are the best! I’m a real estate investor and have used them on several projects now. They offer great prices and excellent service. I highly recommend them!
Very professional team and a great job putting a French drain in our basement.
We have an 1895 house with a fieldstone foundation. Every year after the spring rains water comes up through the rat slab. Over the years I’ve patched the walls, but the floor remains a problem. We began looking for an interior French drain a couple years ago. The first contractor ghosted us. The second would install the drain, but only if we let him encapsulate the walls as well with plastic sheeting, which we thought would just trap moisture and mold. The third, a national franchise, would do the job with their proprietary system, but wanted $24,000 (with a 5% discount if we decided that day- the house isn’t that big!) We reached out to Nicholas at Supreme Waterproofing. He came over later that week for an estimate, even though we were 50 miles from his home base. He itemized exactly what he was going to do and how much it would cost- about half what the national franchise wanted.. We liked the idea that he was the owner. He and his crew Justin showed up on time and worked straight for three days. They cleaned up inside and outside- no mess. The basement looks great. Did it work? We won’t know till next spring, but he guaranteed his work. We would clearly use him again.
Nick did an excellent job of moisture sealing the basement in our new home. He was extremely professional at every step of the process, from getting a quote to completing the job. He answered all of our questions thoroughly and was easy to communicate with at every stage. Our basement looks brand new! His work is meticulous, with excellent workmanship. I can not recommend him more enthusiastically!
Nick responded to my call and came out to my property same day. He answered all of my (many) questions with patience and expertise, and gave me an honest opinion that I should wait before taking action. He didn't charge me for the inspection and left me feeling relieved and informed. In the future when we do some work on our basement, I will definitely be contacting him. Honest, professional, knowledgeable. Thank you!
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Jul 5, 2026.
Next-day response to window water entry5.0
Active MA HIC license2.9