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Avatar for Connecticut Basement Systems, Inc.

Connecticut Basement Systems, Inc.

4.67(
141
)
Approved Pro

Connecticut Basement Systems, Inc.

4.67(
141
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
39 years of experience

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.

"Chuck Stofko was very informative. Was patient in answering all my questions. Spent along time with me reviewing the process and the steps needed to waterproof my basment. I highly recommend him."

Justin F 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.

"Chuck Stofko was very informative. Was patient in answering all my questions. Spent along time with me reviewing the process and the steps needed to waterproof my basment. I highly recommend him."

Justin F on August 2023


Avatar for ProSeal Waterproofing

ProSeal Waterproofing

5.00(
8
)
Approved Pro

ProSeal Waterproofing

5.00(
8
)
Approved Pro
2 years of experience
Free onsite estimate

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


Avatar for Connecticut Basement Systems, Inc.

Connecticut Basement Systems, Inc.

4.80(
35
)
Approved Pro

Connecticut Basement Systems, Inc.

4.80(
35
)
Approved Pro
Customers say: Quick response
39 years of experience
Free onsite estimate

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


Avatar for Groundworks

Groundworks

5.00(
3
)
Approved Pro

Groundworks

5.00(
3
)
Approved Pro
Super Service Award
1 years of experience
Free onsite estimate

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


Avatar for Groundworks

Groundworks

5.00(
1
)
Approved Pro

Groundworks

5.00(
1
)
Approved Pro
9 years of experience
Free onsite estimate

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


Avatar for Valley Roofing and Construction, LLC

Valley Roofing and Construction, LLC

5.00(
1
)
Approved Pro

Valley Roofing and Construction, LLC

5.00(
1
)
Approved Pro
14 years of experience
Free onsite estimate

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.

1.50(
2
)
Approved Pro

Sonart Construction Corp.

1.50(
2
)
Approved Pro
13 years of experience
Free onsite estimate

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


Avatar for Advanced Basement Waterproofing

Advanced Basement Waterproofing

4.78(
40
)

Advanced Basement Waterproofing

4.78(
40
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

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


Avatar for MAS Masonry & Landscaping Co LLC

MAS Masonry & Landscaping Co LLC

5.00(
11
)

MAS Masonry & Landscaping Co LLC

5.00(
11
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

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


Avatar for Upton, Inc. Landscape & Construction

Upton, Inc. Landscape & Construction

4.52(
33
)

Upton, Inc. Landscape & Construction

4.52(
33
)
Customers say: Quality work
27 years of experience

We are a full service landscape/hardscape design, install, and maintenance company with more than 20 years experience in our craft. We provide a minimum 3-year warranty on hardscape/poolscape/paving stones/masonry/concrete/asphalt/base installation (walkways, patios, fire pits, driveways, steps, walls). We are ICPI & NCMA certified-which are the governing bodies that promote best practice methods based on Engineers recommendations (please don't use stone dust as base material and/or bedding sand). We are a Techo-Pro Contractor & Nicolock Hardscape Pro Contractor. We can completely transform your yard from start to finish..and for the DIYer, we can provide specific services to assist in any stage of a project such as excavation, base installation, and include comprehensive instructions and guidance to carry out the remainder of a project so that looks as if the entire project was professionally installed. Exclusively for Angie's List Members: we are currently offering a 5% discount on labor and machinery costs for all projects valued at $2,000 or more. In addition, we offer Tree Removal, Stump Removal, Lawn Installation, Drainage, Excavation, Planting, Fencing, Year-Round Landscape Maintenance, Gutter Cleaning, Dumpster Service, Topsoil and Mulch Delivery, Certified Playground Fiber Installation, Fruit Bearing Tree Planting, Brush Clearing, and more. Contact us for a quote or consultation!

"I could not be happier with my choice. Shawn was professional, friendly, and knowlegable from first contact. He was not the cheapest nor the most expensive estimate I received to complete the work. His quote included more than the cheaper and more expensive estimates I had received. Once hired he began immediately and removed the trees from the house in the first day. It took a little time to complete the job but his concern was the ruin of a lawn in pristine condition. He waited for the ground to dry before starting the portion of the work that required heavy equipment. The lot is also on a very steep downward angle . I feel that he completed the job in a timely manner considering that the weather continued to work against him. Upon finishing he left the property in excellent condition. He removed the 7 foot diameter root ball as well so one would never know the wreck it all had been . The only tell tale sign is where he graded, seeded, and fertilized the portion on the yard where the trees had fallen and gouged the ground."

Caroline F on June 2018

We are a full service landscape/hardscape design, install, and maintenance company with more than 20 years experience in our craft. We provide a minimum 3-year warranty on hardscape/poolscape/paving stones/masonry/concrete/asphalt/base installation (walkways, patios, fire pits, driveways, steps, walls). We are ICPI & NCMA certified-which are the governing bodies that promote best practice methods based on Engineers recommendations (please don't use stone dust as base material and/or bedding sand). We are a Techo-Pro Contractor & Nicolock Hardscape Pro Contractor. We can completely transform your yard from start to finish..and for the DIYer, we can provide specific services to assist in any stage of a project such as excavation, base installation, and include comprehensive instructions and guidance to carry out the remainder of a project so that looks as if the entire project was professionally installed. Exclusively for Angie's List Members: we are currently offering a 5% discount on labor and machinery costs for all projects valued at $2,000 or more. In addition, we offer Tree Removal, Stump Removal, Lawn Installation, Drainage, Excavation, Planting, Fencing, Year-Round Landscape Maintenance, Gutter Cleaning, Dumpster Service, Topsoil and Mulch Delivery, Certified Playground Fiber Installation, Fruit Bearing Tree Planting, Brush Clearing, and more. Contact us for a quote or consultation!

"I could not be happier with my choice. Shawn was professional, friendly, and knowlegable from first contact. He was not the cheapest nor the most expensive estimate I received to complete the work. His quote included more than the cheaper and more expensive estimates I had received. Once hired he began immediately and removed the trees from the house in the first day. It took a little time to complete the job but his concern was the ruin of a lawn in pristine condition. He waited for the ground to dry before starting the portion of the work that required heavy equipment. The lot is also on a very steep downward angle . I feel that he completed the job in a timely manner considering that the weather continued to work against him. Upon finishing he left the property in excellent condition. He removed the 7 foot diameter root ball as well so one would never know the wreck it all had been . The only tell tale sign is where he graded, seeded, and fertilized the portion on the yard where the trees had fallen and gouged the ground."

Caroline F on June 2018

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Foundation Repair questions, answered by experts

While it can be difficult to identify a bad foundation at first glance, look for large horizontal cracks, discoloration, bulging basement walls, or signs of water damage. You may also see large gaps between the home and the foundation on the outside or signs of pooling water from a recent storm.

Foundation repair costs $250 for a minor crack that doesn’t affect the structure’s integrity, although it can cost as much as $800 if it’s a major crack. Call a pro to get it fixed as soon as possible if your crack is bigger than 1/8 inch wide. Additionally, if you need to seal the foundation to fix leaks, it can cost approximately $2,000 to $7,000.

Although some concrete cracks are cosmetic, others can be more serious. Cracks wider than ⅛ inch or that extend through the slab are serious and can cause structural damage. If you notice these types of cracks in your concrete patio, contact a local contractor who installs concrete patios to inspect the damage and determine how to fix it.

Barring extreme home foundation problems, most horizontal foundation cracks are fixable using one or more methods. Most of the repair methods require professional expertise to accomplish, and include plate anchors, steel reinforcement, soil anchors, reconstruction, or carbon fiber strip applications. Contacting a professional to diagnose the problem early can minimize repair expenses.

It is possible for a slab leak to cause a sinkhole, but it would have to be a particularly serious leak. A slab leak causes the land under your home to erode and if there is enough movement depressions will form in the ground, potentially causing a sinkhole.

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.

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