Verified record
Typical your area range for this kind of work, from regional averages β not a quote from Basement Improvements, LLC. Use it to sanity-check bids, then get the real number in writing.
Not sure which you need? Start with an inspection β many reputable companies assess free, and independent assessments run up to $500.
The wall run getting the drain β a full 30Γ40 ft basement is about 140 ft.
Estimated range
$7,600 β $15,000
Typical waterproofing project around $11,300
Basement Improvements, LLC holds a 4.9-star average across 431 Google ratings. One recent customer said their basement was a mess, waited for the rainy season to judge the job, and reported that it's dry; that customer also said the quote was a bit lower than others on the market. On its own website the company lists basement waterproofing, foundation repair, bowing wall repair, sagging floor joists, crawl space encapsulation, basement crack repair and spray foam. Its stated service area names Portland, South Portland and Auburn alongside Manchester, Nashua and Concord, and on its BBB profile the company describes basement repair work in Southern and Central Maine and New Hampshire. Its BBB page is an A+ and lists it as accredited. A recent customer said the team came on schedule, did a thorough job, left the site clean and was reasonably priced. A recent customer said Justin and the guys ran into some problems and put their heads together to come up with a solution. In a 2026 Reddit post, a poster said a quote from the company came in $4k lower than another company's for an interior drain, sump pump and a new slab. A 2023 Angi customer with a farmhouse at least 200 years old on a stone foundation said the cellar filled with water every spring. That 2023 customer said the company kept to the quoted price and the schedule, and that after four to five inches of rain the cellar was bone dry. A 2020 customer wrote that after 35 years the basement was finally dry. A 2019 customer said Cory did the work on a basement foundation crack that was leaking water. In 2019, a customer said that when the work ended up costing less, Corey sent a check for the difference. A 2018 customer said Corey added new supports to their deck. A 2023 Angi customer who paid over $15,000 for basement waterproofing and a new concrete floor said both of their basement steps were ruined and the supports holding the steps were already failing. That 2023 customer said the lines from the oil tank and heater were buried in concrete, that they were not told the steps would be cut, and that they filed a complaint with the BBB.
βI just got the quote from Basement Improvements LLC and they came in $4k lower than 603 for an interior drain, sump pump, and pouring a new slab.β
Justin and the guys were very courteous and knowledgeable. We ran into some problems and everyone put their heads together to come up with a great solution. Would certainly recommend
My basement was a mess. Basement improvement worked on it. I was waiting for the raining season to really judge whether or not the job was a hit or a flop. But it's dry. I'm satisfied and happy with their service. Also, their cost (quote) was a bit lower than the others on the market. I recommend them. ππΌ
The team came on on schedule and did a thorough job, left the site clean and it was all reasonably priced.
Excellent service and communication through out the project
I paid over 15K to have my basement waterproofed and a new concrete floor laid. Both my basement steps were ruined by Basement Improvements, LLC. I have steps from my garage to the basement that they removed and destroyed. They also ruined the step from my house to the basement by cutting the steps instead of putting the concrete around the step. They cut the steps 2 high and the supports holding my steps are already failing. They also buried the lines from my oil tank and heater in concrete. I filed a complaint with the BBB and provided multiple photos of the damage. I expect to be reimbursed. The communication was incredibly poor throughout the entire process. I did not know my steps would be cut or that my lines from to the oil tank and heater would be buried in concrete. I regret using Basement Improvements and wish I had chosen a more professional and responsible business. Nothing about the process was communicated to me until I asked a series of process questions. My questions about the process were treated as a burden from the owner down to the PM. It was never communicated to me that my steps would be cut. It was never communicated to me that my connections would be buried under concrete. It was never communicated to me that my steps up to the garage would be damaged. I found this team to be unprofessional and I regret not choosing Tx Hxxxxxx. I choose Basement Improvements because the cost was lower, but with all the poor workmanship, my cost is higher. Do not make the same mistake I made, choose a professional company to do this work.
Specializes in
Also offers
Service area
Languages
1 change recorded β last scanned Oct 5, 2026.