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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon109
    Verified foundation drain installation services reviews

Top-Rated Foundation drain installation pros in Cornwall - Updated Nov 2026

Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
589
)
Foundation Drainage - Install or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Cornwall, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Our basement has a huge sloping rock in it-the foundation was built around it when the house was built in the 50's. Over the past 5-6 years, water has seeped in more and more at the top of the rock where it meets the ground right next to the foundation and rolled down the rock to the cellar floor, threatening to flow over to the finished side of the basement. First we put a new drainage system outside the house but that did not help. Five years ago we had another basement company come and they told us all we would need is a dehumidifier and that would dry up the water. We bought their big dehumidifier but nope, that did not make a dent in it, it has just gotten worse each year. I called CT Basement Systems late last fall and a very, very nice representative came, looked at the rock and the water flowing down it and was confident their system would take care of the problem. I have a friend that used them for water in her basement and she has raved about them and has never had a drop of water since her system was installed. I paid the deposit and the technicians came exactly when they said they would. They did a great job, were very professional and left the cellar area very clean in spite of all the dust that must have been generated by the jackhammering. I am very happy with the job they did. However, there has been one unexpected problem. Before the drain was put in, I had been buying absorbent socks, flood bags and all kinds of things to soak up the water. Now we just let the water course down the rock into the drain guard, which then funnels it to the sump. We discovered that some of the water drains down to our brick chimney, which abuts the big rock . Instead of continuing it's flow down the rock to the drain, some water is soaking into the gravel around the chimney and then coming out on the other side, where there is no drain guard, making puddles on the floor again. We think the rock needs a thin lip of cement to direct the flow down and away from the chimney area. So, I called the salesman. No call back. I emailed him. No reply. I called and left another message but nothing. I called the company and asked if they would give him a message to call me. No response. So, I can only surmise that they are completely uninterested in this, now that the job is done. I now have a mason coming to do the cement. It is too bad, because I was so impressed with the salesman when he came and also with the installers. I would recommend the product and the installation service beyond a shadow of a doubt. But the lack of customer service after the fact is a huge disappointment. I actually do not mind having our own mason come and do the job. If they had called me back, I would have told them that- I really just wanted to get their opinion on the problem. But they apparently just don't want to be bothered."
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+12

178 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Groundworks
Groundworks
4.9(
13
)
Sump Pump or Interior Foundation Drains - Install

Serving Cornwall, CT and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Foundation
Foundation
Foundation
Concrete
Concrete

+16

486 neighbors recently requested a quote
Avatar for Perez Asphalt & Paving
Perez Asphalt & Paving
4.9(
50
)
Concrete Foundation - Install

Serving Cornwall, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Perez Paving Company deserves more than a five-star review. The last time I had my driveway paved by another company, they simply removed the old asphalt and repaved it. Within three to five years, the driveway had cracked and developed sinkholes. Perez did much more than remove the old asphalt. They also removed the old fill, replaced it with processed stone, and carefully checked the driveway’s pitch with a level as they worked. For example, they made sure the surface would drain properly instead of leaving low spots where water could collect. They followed through on everything they promised—and even exceeded expectations. They said they would remove the old asphalt and fill, add processed stone, apply at least three inches of asphalt, and compress it to about two and a half inches. These extra steps showed they were focused on building a durable driveway, not just covering up the old surface. They did a tremendous job and were professional, polite, and detail-oriented throughout."
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+20

Response time7 hrs
Recommended by72%of homeowners
Avatar for Husky Masonry And Paving
Husky Masonry And Paving
4.9(
17
)
Foundation Drainage - Install or Replace

Serving Cornwall, CT and surrounding areas

Approved

Super Service Award Winner

Free estimates

Customers say: True professional

"I recently had the pleasure of working with Husky Masonry and Paving for the installation of an asphalt pad in my backyard, and I couldn't be happier with the results! The team was incredibly quick and efficient, completing the job in no time without compromising on quality. Not only did they deliver a fantastic asphalt pad, but they also took the time to clean up thoroughly after the work was done, leaving my yard looking immaculate. The professionalism and politeness of the entire staff were truly impressive—they were friendly, respectful, and answered all my questions with patience. I highly recommend Husky Masonry and Paving to anyone in need of paving services. Their dedication to customer satisfaction and attention to detail make them a top choice! Thank you for a job well done!"
Patios Project
Driveways - Asphalt Project
Patios Project
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+17

5 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Ervin H Construction LLC
Ervin H Construction LLC
5.0(
8
)
Concrete Foundation - Install

Serving Cornwall, CT and surrounding areas

Approved

In business since 2021

Free estimates

Customers say: True professional

ERVIN H CONSTRUCTION LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

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+31

4 neighbors recently requested a quote
Recommended by100%of homeowners
Premium Northeast Plumbing LLC
4.9(
4
)
Sump Pump or Interior Foundation Drains - Install

Serving Cornwall, CT and surrounding areas

Approved

In business since 2023

Credit card accepted

Customers say: Quality work

"I gutted the master bathroom and redid it, hired Premium Northeast Plumbing to do all the plumbing work. Andrew the owner is awesome, professional, knowledgeable, personable and punctual. I would strongly recommend this company for any plumbing work."
Response time1 day
8 neighbors recently requested a quote
Recommended by100%of homeowners
Sonart Construction Corp.
2.3(
7
)
Concrete Foundation - Install

Serving Cornwall, CT and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

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Foundation Drain Installation FAQs, answered by experts

Gravity can make it difficult to make plumbing work in a garage if your plumbing is lower than your drainage point. Fortunately, there are ways to create drainage when adding a bathroom to a sunken garage. Plumbers will recommend using an upflush system that discharges into a pump from the back of the toilet.

Yes, it is generally unhealthy and can be dangerous to live in a damp basement. The damp air can negatively affect your breathing and lungs, and the moisture promotes mold growth and pest infestations. Inhaling mold spores or waste particles from insects and rodents attracted to the moisture can be hazardous. This damp, moldy air can also circulate into your main living area. It is crucial to resolve any moisture problems and implement preventative measures before using your basement as a living space.

Yes, you can install a sump pump yourself. By following the steps above, you can have a sump pump installed in 24 hours. You will have to use some advanced tools and techniques, so if you feel uneasy about taking it on yourself, it’s best to hire a professional.

A sump pump should be placed at least three feet deep in a pit. The rim of the sump pump basin should be level with your basement floor. If you find your pit is too deep, you can fill the bottom with gravel until the rim of the sump pump is flush with the floor.

The type of stormwater drainage system you need depends on your area’s storm severity and frequency. Your property’s location should also be considered, including the surrounding soil type, nearest roads, existing drainage systems, and slopes and hills. Your property’s structure, such as decks, walkways, crawl spaces, and foundation, also affects what drainage system will work the best.

The Cornwall, CT homeowners’ guide to foundation drain installation services

From average costs to expert advice, get all the answers you need to get your job done.