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Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
Connecticut Basement Systems is your trusted expert for basement waterproofing, crawl space repair, basement finishing, and foundation repair. Using patented, warrantied products, we provide permanent solutions for your home. Have a wet, flooded basement or crawl space? Tilted or bowing foundation walls? A basement you want to finish? We have a solution. We proudly serve homeowners and businesses all throughout Connecticut & Westchester County, NY. Call us today for a free inspection and no-obligation, estimate. Financing available. Additional phones - (203) 881-5090. Award winning.
"The visit to my home in West Hartford was a nice affair. The technician explained everything. He even mentioned that I had to get a plumber to remove the sink away from the wall, so the work could be done to repair the window and wall area, but I did not hear him mention that I had to pull permits. The problem with this permit pulling issue is that I never initiated the pulling of permits, and this also is a red flag for me. The pulling of a permit should always be done by the contractor who is doing the job. It ensures that the permit pulled is to code. It ensures that the permit pulled follows local ordinance and CT. laws and statutes regarding construction, and that also includes consumer protection mandates in the State of Connecticut. Having me pull the permit to allow the CT. Basement Systems to do the work is a big, red flag, and it can result in my home owner's policy being cancelled if the permits are pulled either after the fact, or the permits pulled do not line up with the inspection process. I can also be fined by the town for pulling permits after the fact too. I've had my furnace replaced. The plumbing company who replaced the furnace followed state law and guidelines. Especially, since funding provided through a loan from a Credit Union chosen by the State of Connecticut ensured that permits were pulled correctly, legally. The same applies to my roof being replaced. The roofing company pulled the permit. Having a customer whom you are charging in excess of $20,000 to pull a permit is putting that customer in legal jeopardy, which is unacceptable. If I sell my house, and I had the work done in my basement, and the permits were pulled by me. The person who bought my house could sue me for an incorrectly pulled permit. How would I answer questions from the town about the technical aspects of the job, which should be handled by the contractor directly? Why introduce another layer of bureaucracy that slows down communication? Have the contractor pull the permit, so that the contractor and the municipality, town or city can communicate directly, and the pulling of the permit is done correctly and legally. How would I know, when the town should be doing an inspection during or while the job is being completed or after the job is completed? This should never be a requirement of the customer to pull the permit for a job to be done. The tech who visited my home mentioned that I had to hire a plumber to move a basement sink, but they did not mention about pulling of permits, but I went and re-read the quote again, and it is at the bottom of the quote page under "Customer Will" that states not only hiring of the plumber but also pulling permits and scheduling inspections. I did not have this job financed by CT. Basement Systems. I, instead, decided to get a home equity loan. If I did not get the home equity loan, then decided to go with CT. Basement Systems financing, then I would be screwed. The best thing I did was slow the process down, seek my own financing, and ask larger, bigger, deeper questions that prevented me from making a mistake by allowing this work to be done."
Marcus L on August 2023
Connecticut Basement Systems is your trusted expert for basement waterproofing, crawl space repair, basement finishing, and foundation repair. Using patented, warrantied products, we provide permanent solutions for your home. Have a wet, flooded basement or crawl space? Tilted or bowing foundation walls? A basement you want to finish? We have a solution. We proudly serve homeowners and businesses all throughout Connecticut & Westchester County, NY. Call us today for a free inspection and no-obligation, estimate. Financing available. Additional phones - (203) 881-5090. Award winning.
"The visit to my home in West Hartford was a nice affair. The technician explained everything. He even mentioned that I had to get a plumber to remove the sink away from the wall, so the work could be done to repair the window and wall area, but I did not hear him mention that I had to pull permits. The problem with this permit pulling issue is that I never initiated the pulling of permits, and this also is a red flag for me. The pulling of a permit should always be done by the contractor who is doing the job. It ensures that the permit pulled is to code. It ensures that the permit pulled follows local ordinance and CT. laws and statutes regarding construction, and that also includes consumer protection mandates in the State of Connecticut. Having me pull the permit to allow the CT. Basement Systems to do the work is a big, red flag, and it can result in my home owner's policy being cancelled if the permits are pulled either after the fact, or the permits pulled do not line up with the inspection process. I can also be fined by the town for pulling permits after the fact too. I've had my furnace replaced. The plumbing company who replaced the furnace followed state law and guidelines. Especially, since funding provided through a loan from a Credit Union chosen by the State of Connecticut ensured that permits were pulled correctly, legally. The same applies to my roof being replaced. The roofing company pulled the permit. Having a customer whom you are charging in excess of $20,000 to pull a permit is putting that customer in legal jeopardy, which is unacceptable. If I sell my house, and I had the work done in my basement, and the permits were pulled by me. The person who bought my house could sue me for an incorrectly pulled permit. How would I answer questions from the town about the technical aspects of the job, which should be handled by the contractor directly? Why introduce another layer of bureaucracy that slows down communication? Have the contractor pull the permit, so that the contractor and the municipality, town or city can communicate directly, and the pulling of the permit is done correctly and legally. How would I know, when the town should be doing an inspection during or while the job is being completed or after the job is completed? This should never be a requirement of the customer to pull the permit for a job to be done. The tech who visited my home mentioned that I had to hire a plumber to move a basement sink, but they did not mention about pulling of permits, but I went and re-read the quote again, and it is at the bottom of the quote page under "Customer Will" that states not only hiring of the plumber but also pulling permits and scheduling inspections. I did not have this job financed by CT. Basement Systems. I, instead, decided to get a home equity loan. If I did not get the home equity loan, then decided to go with CT. Basement Systems financing, then I would be screwed. The best thing I did was slow the process down, seek my own financing, and ask larger, bigger, deeper questions that prevented me from making a mistake by allowing this work to be done."
Marcus L on August 2023

ProSeal Waterproofing
ProSeal Waterproofing
I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!
"Alex was amazing!! We had a crack in our foundation that another company attempted to repair numerous times. We were fortunate enough to hear about ProSeal and I am happy to report not only did Alex repair the crack to near perfection but the work was done timely, neatly and his customer service skills are top notch. I would HIGHLY recommend ProSeal for all of your foundation needs."
Angela M on October 2025
I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!
"Alex was amazing!! We had a crack in our foundation that another company attempted to repair numerous times. We were fortunate enough to hear about ProSeal and I am happy to report not only did Alex repair the crack to near perfection but the work was done timely, neatly and his customer service skills are top notch. I would HIGHLY recommend ProSeal for all of your foundation needs."
Angela M on October 2025

All Build Masonry And Roofing LLC
All Build Masonry And Roofing LLC
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"My front stairs was in bad condition, all build soon fixed it and brought it back to life would recommend "
daniel c on October 2025
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"My front stairs was in bad condition, all build soon fixed it and brought it back to life would recommend "
daniel c on October 2025

Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.
"Overall, working with the company was a good experience."
Marcy W on October 2024
Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.
"Overall, working with the company was a good experience."
Marcy W on October 2024

Groundworks
Groundworks
Groundworks provides dependable foundation repair, basement waterproofing, concrete lifting, and crawl space solutions for Connecticut homes. Our commitment enhances the value and safety of homes within our community.
"Chuck, Alex and Naki did a great job. Lots of attention to detail. Walked me me the whole process so I would feel comfortable"
Sandy G on June 2025
Groundworks provides dependable foundation repair, basement waterproofing, concrete lifting, and crawl space solutions for Connecticut homes. Our commitment enhances the value and safety of homes within our community.
"Chuck, Alex and Naki did a great job. Lots of attention to detail. Walked me me the whole process so I would feel comfortable"
Sandy G on June 2025

Groundworks
Groundworks
Groundworks is North America’s leading foundation repair and water management solutions company. Groundworks has been serving homeowners across the U.S. and Canada for decades, providing quality home repair solutions. Groundworks is a BBB-accredited business and a multi-time recipient of the Angi Super Service Award. Our 50-plus years of combined expertise brings Connecticut homeowners innovative solutions and industry-leading warranties to protect their biggest investment, their homes. HIC.0699918
"They Did Good"
Deirdre O on December 2025
Groundworks is North America’s leading foundation repair and water management solutions company. Groundworks has been serving homeowners across the U.S. and Canada for decades, providing quality home repair solutions. Groundworks is a BBB-accredited business and a multi-time recipient of the Angi Super Service Award. Our 50-plus years of combined expertise brings Connecticut homeowners innovative solutions and industry-leading warranties to protect their biggest investment, their homes. HIC.0699918
"They Did Good"
Deirdre O on December 2025

Valley Roofing and Construction, LLC
Valley Roofing and Construction, LLC
Valley Roofing and Construction, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.
"excellent experience working with valley roofing and construction to replace our old roof! and their customer service was responsive and personal. on-site crew was efficient and thorough with clean up! after the roof was installed we didn't find a speck of construction debris leftover.definitely recommend using valley roofing and construction"
patrick r on October 2025
Valley Roofing and Construction, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.
"excellent experience working with valley roofing and construction to replace our old roof! and their customer service was responsive and personal. on-site crew was efficient and thorough with clean up! after the roof was installed we didn't find a speck of construction debris leftover.definitely recommend using valley roofing and construction"
patrick r on October 2025
Sonart Construction Corp.
Sonart Construction Corp.
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!
"????? If I could give zero stars, I would Hiring this contractor was a nightmare from start to finish. The bathroom they delivered is so poorly done that I feel like I need to redo it entirely. They rely on subpar subcontractors with no professionalism or craftsmanship. ? Overpromise and underdeliver: I had to stay on top of every detail myself, doing the job the contractor was hired to manage. ? Unreliable: Never kept appointments or confirmed schedules. The only time they showed up on time was to collect payment. ? Unsafe practices: At one point, a subcontractor was cutting concrete inside the bathroom with a gas?powered tool, filling my entire home with smoke. I had to intervene to stop it and argue just to get basic protections like tarps in place. ? Poor management: Subcontractors openly complained about not being paid, and I even had to send one home myself because of unacceptable behavior. ? End result: Substandard work that does not reflect the money spent. Save yourself "
Kevork B on December 2025
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!
"????? If I could give zero stars, I would Hiring this contractor was a nightmare from start to finish. The bathroom they delivered is so poorly done that I feel like I need to redo it entirely. They rely on subpar subcontractors with no professionalism or craftsmanship. ? Overpromise and underdeliver: I had to stay on top of every detail myself, doing the job the contractor was hired to manage. ? Unreliable: Never kept appointments or confirmed schedules. The only time they showed up on time was to collect payment. ? Unsafe practices: At one point, a subcontractor was cutting concrete inside the bathroom with a gas?powered tool, filling my entire home with smoke. I had to intervene to stop it and argue just to get basic protections like tarps in place. ? Poor management: Subcontractors openly complained about not being paid, and I even had to send one home myself because of unacceptable behavior. ? End result: Substandard work that does not reflect the money spent. Save yourself "
Kevork B on December 2025

Advanced Basement Waterproofing
Advanced Basement Waterproofing
Advanced Basement Waterproofing specializes in complete basement sealing, moisture and mold removal and French drain installations throughout Western MA and Northern CT. Concrete and brick foundations can allow in water through cracks in the foundation that develop over time, openings in the joints or mortar areas as well as "bleeding" from pressure behind concrete surfaces. If you notice water in your basement or extreme moisture, then you have a water intrusion issue that you will want to solve as fast as possible. Moisture and water can not only cause additional damage to your foundation, it can also lead to dangerous mold issues. Advanced Basement Waterproofing can seal and protect your basement as well as remove any mold your home or business may have developed.
"Brian, the salesperson, impressed me from the moment he walked in. His professionalism was apparent at the start—not only well-mannered and courteous, but he was clearly knowledgeable and took the time to explain every detail of the French drain installation in language I could easily understand. I felt at ease with him guiding me through the process. On the installation day, Sergey and the rest of the crew arrived ready to work. They not only worked hard, but also demonstrated real care with each step done thoughtfully, surfaces were kept clean, and every component of the French drain was installed with an eye for detail. All in all, the team was courteous, efficient, and respectful of my property. Brian’s calm confidence and thorough explanations combined with the team’s careful work made the entire experience feel seamless. I now have full confidence in my dry basement and would 100% recommend Advanced Basement Waterproofing to anyone who asked me."
Sue C on August 2025
Advanced Basement Waterproofing specializes in complete basement sealing, moisture and mold removal and French drain installations throughout Western MA and Northern CT. Concrete and brick foundations can allow in water through cracks in the foundation that develop over time, openings in the joints or mortar areas as well as "bleeding" from pressure behind concrete surfaces. If you notice water in your basement or extreme moisture, then you have a water intrusion issue that you will want to solve as fast as possible. Moisture and water can not only cause additional damage to your foundation, it can also lead to dangerous mold issues. Advanced Basement Waterproofing can seal and protect your basement as well as remove any mold your home or business may have developed.
"Brian, the salesperson, impressed me from the moment he walked in. His professionalism was apparent at the start—not only well-mannered and courteous, but he was clearly knowledgeable and took the time to explain every detail of the French drain installation in language I could easily understand. I felt at ease with him guiding me through the process. On the installation day, Sergey and the rest of the crew arrived ready to work. They not only worked hard, but also demonstrated real care with each step done thoughtfully, surfaces were kept clean, and every component of the French drain was installed with an eye for detail. All in all, the team was courteous, efficient, and respectful of my property. Brian’s calm confidence and thorough explanations combined with the team’s careful work made the entire experience feel seamless. I now have full confidence in my dry basement and would 100% recommend Advanced Basement Waterproofing to anyone who asked me."
Sue C on August 2025

MAS Masonry & Landscaping Co LLC
MAS Masonry & Landscaping Co LLC
MAS Masonry and Landscaping Company LLC built on quality, honesty, and the pursuit of perfection. Established by Marcos in 2005. I've built a reputation that has stood the test of time. I’m looking forward to bringing my experience and superb craftsmanship to your project.
"Marcos and his crew redid my back patio by pitching it away from the house so water would drain . He also added on to the patio using both my pavers and additional ones . He used Belgian blocks as an edge. Most importantly, he fit pieces perfectly around areas which could not use a whole paver. Magnificent job all around."
Harvey C on October 2019
MAS Masonry and Landscaping Company LLC built on quality, honesty, and the pursuit of perfection. Established by Marcos in 2005. I've built a reputation that has stood the test of time. I’m looking forward to bringing my experience and superb craftsmanship to your project.
"Marcos and his crew redid my back patio by pitching it away from the house so water would drain . He also added on to the patio using both my pavers and additional ones . He used Belgian blocks as an edge. Most importantly, he fit pieces perfectly around areas which could not use a whole paver. Magnificent job all around."
Harvey C on October 2019
Verified Reviews for Foundation Repair pros in Cornwall, CT
*The Angi rating for Foundation Repair companies in Cornwall, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.
*The HomeAdvisor rating for Foundation Repair companies in Cornwall, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.
Last update on December 30, 2025
The Cornwall, CT homeowners’ guide to foundation repairs
From average costs to expert advice, get all the answers you need to get your job done.

Crawl space maintenance can help improve indoor air quality and avoid structural damage. Learn how much crawl space cleaning costs and when to schedule it.

A foundation for a new-build home averages around $11,000. Find out all the factors that affect the cost of a foundation and how to save money.

Whether trying to protect it or transport it, raising a house is no small feat. Read on to find out everything you need to know about the cost to raise a house.

Wondering what weeping tile is? With the unique and somewhat confusing name, you’re not alone. Learn more about weeping tile drainage systems in this guide.

Pier and beam foundations offer numerous advantages to homeowners like better ventilation and lower costs, but the disadvantages need consideration too.

Worried about pier and beam foundation repair costs? Get a better understanding of how to budget by learning about the repair methods available to you.
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- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"





