Top-rated basement waterproofing pros.

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There are 20 highly-rated local basement waterproofing pros.

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    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Danbury

Avatar for Groundworks-New Haven

Groundworks-New Haven

5.00(
1
)
Approved Pro

Groundworks-New Haven

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
28 local quotes requested

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

"Professional and efficient tech."

Mark R on April 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

"Professional and efficient tech."

Mark R on April 2025


Avatar for Empire Construction Waterproofing llc

Empire Construction Waterproofing llc

5.00(
15
)
Approved Pro

Empire Construction Waterproofing llc

5.00(
15
)
Approved Pro
Customers say: Quick response
19 years of experience
Free onsite estimate

We specialize in basement waterproofing, foundation sealing and crack repair, yard drainage, yard grading, gravel road maintenance, small excavation. We pride ourselves on the quality work we provide, while delivering great customer service. Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Great work start to finish! They waterproofed our basement and fixed a foundation crack that was leaking for years. Super professional, quick, and neat work. No more water issues! Highly recommend!"

Tatsiana M on October 2025

We specialize in basement waterproofing, foundation sealing and crack repair, yard drainage, yard grading, gravel road maintenance, small excavation. We pride ourselves on the quality work we provide, while delivering great customer service. Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Great work start to finish! They waterproofed our basement and fixed a foundation crack that was leaking for years. Super professional, quick, and neat work. No more water issues! Highly recommend!"

Tatsiana M on October 2025


Avatar for WEATHER-TITE WATERPROOFING INC.

WEATHER-TITE WATERPROOFING INC.

4.88(
96
)
Approved Pro

WEATHER-TITE WATERPROOFING INC.

4.88(
96
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
65 local quotes requested

Weather-tite Waterproofing is a family owned, full service basement waterproofing company that has been serving our customers since 1992.All work is performed by our trained,professional staff,never by sub-contractors.All inspections are done by owner after which you shall receive a free, written estimate.

"Excellent service. Courteous, prompt, clean, friendly and great attention to detail."

Shari M on July 2025

Weather-tite Waterproofing is a family owned, full service basement waterproofing company that has been serving our customers since 1992.All work is performed by our trained,professional staff,never by sub-contractors.All inspections are done by owner after which you shall receive a free, written estimate.

"Excellent service. Courteous, prompt, clean, friendly and great attention to detail."

Shari M on July 2025


"Cayden was very professional and polite. This visit was for yearly Maintence of my sump pump. "

Bernadette H on October 2025

Budget Dry Waterproofing is a waterproofing company founded on the belief that quality home improvement work does not need to break the bank. We are dedicated to providing excellent service.

"Cayden was very professional and polite. This visit was for yearly Maintence of my sump pump. "

Bernadette H on October 2025


Avatar for CT Paving and Masonry

CT Paving and Masonry

5.00(
1
)
Approved Pro

CT Paving and Masonry

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
75 local quotes requested

Welcome to CT Paving and Masonry! We specialize in all masonry, concrete, retaining walls, hard scaping landscaping, grading excavating drainage, paving, demolition, and patios and walkways, foundations basements, and waterproofing. We have been in business for over 35 years. We are family owned and operated with 26 guys on the team. We take pleasure and pride in our work and we treat each and every customer with top-of-the-line, affordable services to ensure top quality work! We look forward to doing business with you please feel free to reach out for a free estimate we service the entire Connecticut, we are fully license and insured

"I had a lot of projects that we're done around my house. And what was great about it The company took on all the tastics. I'm very pleased with their performance."

Michael A on April 2025

Welcome to CT Paving and Masonry! We specialize in all masonry, concrete, retaining walls, hard scaping landscaping, grading excavating drainage, paving, demolition, and patios and walkways, foundations basements, and waterproofing. We have been in business for over 35 years. We are family owned and operated with 26 guys on the team. We take pleasure and pride in our work and we treat each and every customer with top-of-the-line, affordable services to ensure top quality work! We look forward to doing business with you please feel free to reach out for a free estimate we service the entire Connecticut, we are fully license and insured

"I had a lot of projects that we're done around my house. And what was great about it The company took on all the tastics. I'm very pleased with their performance."

Michael A on April 2025


Avatar for Connecticut Basement Systems, Inc.

Connecticut Basement Systems, Inc.

4.47(
164
)
Approved Pro

Connecticut Basement Systems, Inc.

4.47(
164
)
Approved Pro
Customers say: Super punctual
78 local quotes requested
38 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.

"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


Avatar for Omega Development LLC

Omega Development LLC

4.69(
13
)
Approved Pro

Omega Development LLC

4.69(
13
)
Approved Pro
Customers say: Quick response
221 local quotes requested
21 years of experience

At Omega Development LLC, we bring your home improvement dreams to life with precision, quality, and craftsmanship you can trust. Our licensed and insured team specializes in home renovations, custom construction, kitchen and bathroom remodeling, additions, and exterior upgrades. With years of experience in the residential construction industry, we pride ourselves on delivering exceptional results, honest communication, and dependable service—from the first consultation to project completion. Whether you’re looking to modernize your space, increase your property value, or build your dream home, Omega Development LLC is your trusted partner for reliable, high-quality construction solutions. ✅ Our Services Include: Full Home Renovations & Remodels Kitchen & Bathroom Remodeling Home Additions & Basement Finishing Roofing, Siding & Exterior Improvements Custom Home Builds & Design-Build Services & more...

"I had an emergency and needed immediate help. They responded immediately, did the work the next day, were priced fairly and did excellent work. They get my highest recommendation! "

Gary N on October 2025

At Omega Development LLC, we bring your home improvement dreams to life with precision, quality, and craftsmanship you can trust. Our licensed and insured team specializes in home renovations, custom construction, kitchen and bathroom remodeling, additions, and exterior upgrades. With years of experience in the residential construction industry, we pride ourselves on delivering exceptional results, honest communication, and dependable service—from the first consultation to project completion. Whether you’re looking to modernize your space, increase your property value, or build your dream home, Omega Development LLC is your trusted partner for reliable, high-quality construction solutions. ✅ Our Services Include: Full Home Renovations & Remodels Kitchen & Bathroom Remodeling Home Additions & Basement Finishing Roofing, Siding & Exterior Improvements Custom Home Builds & Design-Build Services & more...

"I had an emergency and needed immediate help. They responded immediately, did the work the next day, were priced fairly and did excellent work. They get my highest recommendation! "

Gary N on October 2025


Avatar for FS Sanchez Landscaping LLC

FS Sanchez Landscaping LLC

4.78(
9
)
Approved Pro

FS Sanchez Landscaping LLC

4.78(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
146 local quotes requested

We are a small, family owned operated full service landscaping company. Aside from all of your landscaping needs, we also specialize in, hardscaping, rock walls, paver and concrete patios, decks, new driveway construction and more! We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today! We carry a home improvement license and we are fully insured.

"Job done well, on time."

Frank R on March 2024

We are a small, family owned operated full service landscaping company. Aside from all of your landscaping needs, we also specialize in, hardscaping, rock walls, paver and concrete patios, decks, new driveway construction and more! We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today! We carry a home improvement license and we are fully insured.

"Job done well, on time."

Frank R on March 2024


Avatar for Dirty Deeds Basement Waterproofing

Dirty Deeds Basement Waterproofing

5.00(
4
)
Approved Pro

Dirty Deeds Basement Waterproofing

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 local quotes requested

Dirty Deeds Inc. is a family owned and operated company. We pride ourselves on our integrity and ability to provide professional and individualized waterproofing services. We offer you the best possible solution to your particular needs, offering a wide range of internal or external solutions. Our business owner Dean has 40 years experience specializing exclusively in basement waterproofing, his work has been recognized and featured in “This Old House Magazine,” showcased on our website: dirtydeedswaterproofing.com Give us a call to schedule your free inspection to identify, mitigate, and resolve your water issues.

"My sewage ejector pump in basement would not stop running and I was looking to replace it. I texted Dean two pictures of the pump, he was able to give me a quote over text and the price was quite reasonable. He received a new pump on 5/22/2023 and came over to my house. After opening up the old pump and checking, he told me that the only thing that is really broken is the check valve, the switch got stuck but is still functioning, and the pump itself works fine. I ended up asking him to only replace the check valve and the switch and this saved me about $1000 from the original plan. I appreciate Dean's honesty, professionalism, and a job well done."

Haifeng Q on June 2023

Dirty Deeds Inc. is a family owned and operated company. We pride ourselves on our integrity and ability to provide professional and individualized waterproofing services. We offer you the best possible solution to your particular needs, offering a wide range of internal or external solutions. Our business owner Dean has 40 years experience specializing exclusively in basement waterproofing, his work has been recognized and featured in “This Old House Magazine,” showcased on our website: dirtydeedswaterproofing.com Give us a call to schedule your free inspection to identify, mitigate, and resolve your water issues.

"My sewage ejector pump in basement would not stop running and I was looking to replace it. I texted Dean two pictures of the pump, he was able to give me a quote over text and the price was quite reasonable. He received a new pump on 5/22/2023 and came over to my house. After opening up the old pump and checking, he told me that the only thing that is really broken is the check valve, the switch got stuck but is still functioning, and the pump itself works fine. I ended up asking him to only replace the check valve and the switch and this saved me about $1000 from the original plan. I appreciate Dean's honesty, professionalism, and a job well done."

Haifeng Q on June 2023


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
147 local quotes requested
38 years of experience

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

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Basement Waterproofing questions, answered by experts

Yes, many repair services include reapplying waterproofing and UV-resistant coatings.

Since basements are prone to water and moisture issues and the resulting problems can be expensive to repair and potentially damaging to your home, basement waterproofing is almost always worthwhile. Even for homes that haven’t experienced water infiltration, waterproofing the basement is insurance against facing expensive repair bills in the future. All basements will leak at some point, so fixing drainage issues and taking steps to prevent moisture and water infiltration is wise.

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. 

Flooded basement cleanup can take anywhere from a few days to several weeks, depending on the extent of water damage, the type of water involved, and the need for repairs or mold remediation. Severe cases with structural damage or extensive mold may require longer timelines. Quick action and professional help can speed up the process and reduce overall damage.

Depending on the severity, a slab leak can go undetected for months or even years, especially if you don’t carry out routine foundation inspections to find foundation leaks early. However, minor leaks are likely to turn into more severe leaks over time, so you might notice increases in water bills and issues with yard drainage, even if the problem is minor.

The Danbury, CT homeowners’ guide to basement waterproofing services

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

What do you need done? We’ll find top pros.
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