Verified record
7R Basement Waterproofing & Construction Service describes its work as basement waterproofing and construction meant to prevent water damage and strengthen foundations. The company says it has been in business for 20 years, and its website lists a service area that includes Longmeadow, Hampden, Holyoke, Chicopee and Northampton. A recent Google reviewer said Elmer and his team did a basement job in their 100-year-old home. A 2025 customer with a flooding basement said Elmer installed a French drain and pump, and that they cleaned up afterward. Another customer, writing in 2025 about water in the basement, said Elmer assessed the issue and put together a solution, and that on the day the work started Elmer and his team arrived at 8AM and were complete by 4PM. A 2025 reviewer with a hatchway leak running into the basement said Elmer came out to provide an estimate almost immediately and did the job at a much lower price than the other estimates they had. A 2025 customer said Elmer and his team did a cement patio for them.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from 7R Basement Waterproofing & Construction Service. 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
Elmer and his team did an efficient job on doing a basement job in my 100-year old home. Thank you and I highly recommend 7R Basement!
We loved the work that Elmer and his team did. They did a cement patio and it came out beautiful. We highly recommend their company. The work was done really fast and of high quality. They have a friendly staff, fast and easy communication. His team has a lot of experience and knows what they're doing.
We had a fantastic experience with Elmer and 7R Basement Waterproofing. After dealing with some water in our basement I scrambled to find someone who could help us fix the problem. Elmer arrived promptly, assessed our issue and put together a solution that would fix the issue at a very reasonable price. On the day the works started, Elmer and his team arrived at 8AM and were complete by 4PM. The professionalism of the work was top notch, they took the time to clean up after they finished and left the house as good as new. I cannot recommend this company enough. Thanks Elmer!
HIGHLY RECOMMENDED!!! Elmer and his crew are reliable, timely and do masterful work. Sincere, honest and extremely fair pricing. I had a flooding basement problem and Elmer installed a French drain and pump as promised. Cleaned up like they were never here! And a bonus, Elmer and his crew are all very nice people. Thank you so much Elmer. Dan and Patty
I am so impressed with Elmer in many ways. I had a leak in my hatchway that was running into the rest of the basement. Elmer came out to provide an estimate almost immediately. I had other estimates that were way higher than Elmer's and I had a better feeling about Elmer. Well, I made the right decision having Elmer do the job. He is so easy to work with and he did a great job at a MUCH lower price.. Extremely conscientious. I highly recommend him and his crew.
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2 changes recorded — last scanned Sep 29, 2026.
Basement waterproofing5.0
Retaining walls5.0
Bulkhead replacement4.8
Brick and 1850s fieldstone foundations repointed4.8
Structural carpentry4.8
Owner-led communication4.8
Daily project updates3.5