Verified record
Primestone Home Improvement Corp describes itself as a third-generation, Boston-area family business that has protected homes from water damage and structural issues for more than 35 years, specializing in basement waterproofing, foundation repair, and masonry restoration. The review record backs that up with specific, hands-on jobs: retaining walls, brick and stone patios, walkways and steps, basement waterproofing, and a driveway with a Belgian-block edge, most done by a crew led by Thomas (also "Tomas") and Michael. Reviewers repeatedly mention work done entirely by hand, crews that show up on time, finish on budget, and clean up thoroughly each day — one 2025 review of an $8,500 brick-and-stone patio and steps job said the crew finished in a little over a day and left the area spotless. In a 2025 review, a customer described Michael coming out the same day to evaluate a collapsing retaining wall supporting an above-ground pool and having the section rebuilt within two days. One review stands out for a different reason: in an August 2025 post, someone who ultimately didn't hire the company said Michael still came out to assess a water runoff problem affecting a neighbor's property and talked through options rather than pushing an expensive fix. Angi lists a Massachusetts trade license (#212781, expiring July 2026) for the business, though that's the directory's own listing rather than an independently verified record. Across a dozen reviews from 2024 to 2025, none are negative — for waterproofing, masonry, or hardscape work, this looks like a consistently well-regarded, hands-on crew.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Primestone Home Improvement corp. 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
This will be an odd review, because I did not actually hire the company. That said, Michael came over to view my job, which involved excess water off my property impacting my next door neighbor. I thought I was going to have to rejigger all of my gutters for thousands of dollars, but Michael identified the real problem as lying in my neighbor's driveway, which had a dip next to his basement door where all of the water collected. Plus, his drainage system had never been cleaned (he's owned the building for 24 years). The solution then that Michael urged us to was first for my neighbor to contact Roto Router to clean out his drains. In the event that didn't do the trick, another easy solution he suggested was redirecting my downspout from the back of the building to the front. So, while I had no need to hire Primestone, the advice my neighbor and I received (for free!) was sufficient to resolve the problem for the present, and likely into the future. Many thanks Michael!
As a real estate attorney I'm always nervous about contractors. Thomas and his team were dedicated and professional down to coming in and out through a hutch so they would not track dust. We are quite happy with the service and communication. This is the type of old school care about one's business we don't see enough these days. Highly recommend
Brick and Stone Patios, Walks, and Steps - Install ($8,500). Thomas and his crew were amazing. They finished this job in a little over a day. They left the area spotless and I couldn't be happier. Worth every penny. They removed the original brick walkway and hauled away bricks.
Excellent job on my patio and wall no more water buildup or ants it's a little late but thank you thomas
I had Tomas for a quote for my front stairs he explained the posses and the engineer view of the work he came did a great job I recommend him for any type of work Great job Ted Leotsakos
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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 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