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Basement waterproofing pros in Brooklyn

Avatar for Rahat Construction Corp.
Rahat Construction Corp.
720 E 39 St
4.66(
356
)
Approved Pro
Rahat Construction Corp.
720 E 39 St
4.66(
356
)
Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
271 local quotes requested

With over 20 years of experience, Rahat Construction Corp can take care of your needs. Concrete pouring/repair, Basement water proofing, Painting interior/exterior, Mold testing/remediation, Roofing, Masonry, Kitchen/Bathroom remodeling and Room additions. We can do it all!

"Excellent job"

Victoria A on July 2025

With over 20 years of experience, Rahat Construction Corp can take care of your needs. Concrete pouring/repair, Basement water proofing, Painting interior/exterior, Mold testing/remediation, Roofing, Masonry, Kitchen/Bathroom remodeling and Room additions. We can do it all!

"Excellent job"

Victoria A on July 2025


Avatar for Quality 1st Basement Systems
Quality 1st Basement Systems
359 RT-35
4.51(
289
)
Approved Pro
Quality 1st Basement Systems
359 RT-35
4.51(
289
)
Approved Pro
Customers say: Super punctual
322 local quotes requested
39 years of experience

Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.

"Everything went smoothly"

Hector R on December 2023

Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.

"Everything went smoothly"

Hector R on December 2023


Mr Brickman Inc
215 Park St
4.72(
116
)
Approved Pro
Mr Brickman Inc
215 Park St
4.72(
116
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
23 local quotes requested

Looking for reliable basement waterproofing services in the Tri-State Area? Look no further than Mr Brickman Inc. With free estimates, owner-operated service, and full licensing and insurance, we're the trusted choice for all your waterproofing needs. Contact us today!

"Just had a driveway put In they did a great job. Cleanup after themselves too"

William D on September 2024

Looking for reliable basement waterproofing services in the Tri-State Area? Look no further than Mr Brickman Inc. With free estimates, owner-operated service, and full licensing and insurance, we're the trusted choice for all your waterproofing needs. Contact us today!

"Just had a driveway put In they did a great job. Cleanup after themselves too"

William D on September 2024


Avatar for S.N.J RENOVATION CORP
S.N.J RENOVATION CORP
3005 35th St Apt 2
4.90(
5
)
Approved Pro
S.N.J RENOVATION CORP
3005 35th St Apt 2
4.90(
5
)
Approved Pro
Customers say: Terrific value
10 local quotes requested
12 years of experience

S.N.J RENOVATION CORP 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.

"Ernesto and team helped with a major renovation after extensive water damage to my place. They did flooring repair, painting, drywall repair (flood cuts & the entire ceiling in my bedroom), removal and reinstallation of the island (including cabinetry, oven, dishwasher, sink), and replacement of all trim."

Aiqi Z on May 2025

S.N.J RENOVATION CORP 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.

"Ernesto and team helped with a major renovation after extensive water damage to my place. They did flooring repair, painting, drywall repair (flood cuts & the entire ceiling in my bedroom), removal and reinstallation of the island (including cabinetry, oven, dishwasher, sink), and replacement of all trim."

Aiqi Z on May 2025


Avatar for Drill Construction Co
Drill Construction Co
805 Rogers Ave 1B
4.89(
14
)
Approved Pro
Drill Construction Co
805 Rogers Ave 1B
4.89(
14
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
16 local quotes requested

Drill Construction Co 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. 20+ years experience

"Drill Construction repaired my roof and backyard, concerns. They are very professional with time, and with their work. I appreciated that Zamir took time to explain in precise detail not only the potential cause of the problem(s) but also how he was prepared to repair the concerns. His explanation was then documented in the contract so that I knew what to expect, and could refer back to the contract if necessary. I was also grateful for the way they respected and protected my home. They removed all waste material and cleaned up each day before departing. "

Oliva G on August 2025

Drill Construction Co 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. 20+ years experience

"Drill Construction repaired my roof and backyard, concerns. They are very professional with time, and with their work. I appreciated that Zamir took time to explain in precise detail not only the potential cause of the problem(s) but also how he was prepared to repair the concerns. His explanation was then documented in the contract so that I knew what to expect, and could refer back to the contract if necessary. I was also grateful for the way they respected and protected my home. They removed all waste material and cleaned up each day before departing. "

Oliva G on August 2025


Avatar for Zavza Seal, LLC
Zavza Seal, LLC
377 Main St. Suite 6
4.92(
43
)
Approved Pro
Zavza Seal, LLC
377 Main St. Suite 6
4.92(
43
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
4 years of experience

Zavza Seal is an experienced high end general contracting firm with a passion for delivering excellence. Serving Long Island communities including Suffolk, and Nassau counties. We are a one-stop shop construction company that specializes in the following: waterproofing basements, paving and sealing driveways and garages, waterproofing parking structure and concrete commercial roofs. Concrete Swimming pool buildout, Stone paving and tuck-pointing work. If you are considering any type of waterproofing project and concrete work we are here to help and can provide valuable, time-saving advice. We also specialize in waterproof concrete for professional and residential use called Basecrete. Call today for a free estimate!

"I hired Zavza Seal to waterproof my basement and they did an exceptional job! The team was professional, thorough and went the extra mile to ensure everything was done perfectly. I'm happy with their work and highly recommend them to anyone!"

Levan C on September 2024

Zavza Seal is an experienced high end general contracting firm with a passion for delivering excellence. Serving Long Island communities including Suffolk, and Nassau counties. We are a one-stop shop construction company that specializes in the following: waterproofing basements, paving and sealing driveways and garages, waterproofing parking structure and concrete commercial roofs. Concrete Swimming pool buildout, Stone paving and tuck-pointing work. If you are considering any type of waterproofing project and concrete work we are here to help and can provide valuable, time-saving advice. We also specialize in waterproof concrete for professional and residential use called Basecrete. Call today for a free estimate!

"I hired Zavza Seal to waterproof my basement and they did an exceptional job! The team was professional, thorough and went the extra mile to ensure everything was done perfectly. I'm happy with their work and highly recommend them to anyone!"

Levan C on September 2024


Avatar for Prostar Waterproofing and Construction LLC
Prostar Waterproofing and Construction LLC
10 Wright Street Unit 15B
5.00(
2
)
Approved Pro
Prostar Waterproofing and Construction LLC
10 Wright Street Unit 15B
5.00(
2
)
Approved Pro
Customers say: Quick response
127 local quotes requested
11 years of experience

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"Outstanding service and value. Prostar Waterproofing and Construction were one of the most responsive and professional businesses I've come across. From start to finish, a pleasure to work with. They are extremely responsive, and will always follow through to ensure the customer is being taken care of. Calls, questions, estimates - all of this is done on time, as promised. Paul, who did the consultation, was extremely knowledgeable and did not try to upsell anything. The crew that came out were professional, and maintained a clean working area. Dust control was excellent. Their prices are very reasonable, and they will not nickel and dime. They will work with you throughout the project. Quality work, honest people. So far the system they put in place has been working as advertised. Would highly recommend this company."

Keith L on December 2024

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"Outstanding service and value. Prostar Waterproofing and Construction were one of the most responsive and professional businesses I've come across. From start to finish, a pleasure to work with. They are extremely responsive, and will always follow through to ensure the customer is being taken care of. Calls, questions, estimates - all of this is done on time, as promised. Paul, who did the consultation, was extremely knowledgeable and did not try to upsell anything. The crew that came out were professional, and maintained a clean working area. Dust control was excellent. Their prices are very reasonable, and they will not nickel and dime. They will work with you throughout the project. Quality work, honest people. So far the system they put in place has been working as advertised. Would highly recommend this company."

Keith L on December 2024


Avatar for TS Construction NY
TS Construction NY
1400 E New York Ave, Unit 3D
3.58(
24
)
Approved Pro
TS Construction NY
1400 E New York Ave, Unit 3D
3.58(
24
)
Approved Pro
18 local quotes requested
21 years of experience

We are a locally owned and operated company that have done honest jobs throughout New York for the past 20 years. Our work includes all of kinds of interior and exterior painting services (every master painter has 5+ years experience), installation of different hot and cold flat roofs, brick work/pointing, waterproofing, applying stucco, cement work, concrete work, block work, repairing sidewalk driveways, installing drywall, interior compound and taping, etc. Our customers are our highest priority so we have the most quality prices.

"Moni was very good manager and his workers very good. I would hire them again."

Gloria B on April 2024

We are a locally owned and operated company that have done honest jobs throughout New York for the past 20 years. Our work includes all of kinds of interior and exterior painting services (every master painter has 5+ years experience), installation of different hot and cold flat roofs, brick work/pointing, waterproofing, applying stucco, cement work, concrete work, block work, repairing sidewalk driveways, installing drywall, interior compound and taping, etc. Our customers are our highest priority so we have the most quality prices.

"Moni was very good manager and his workers very good. I would hire them again."

Gloria B on April 2024


Charlie Lopez Barillas
710 23rd Street Apt 1
New on AngiNew on Angi
Approved Pro
Charlie Lopez Barillas
710 23rd Street Apt 1
New on AngiNew on Angi
Approved Pro
222 local quotes requested
10 years of experience

Charlie Lopez Barillas is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"-"

Oona C on April 2025

Charlie Lopez Barillas is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"-"

Oona C on April 2025


Avatar for Optimum Waterproofing and Construction
Optimum Waterproofing and Construction
80 Baruch Dr #6b
1.50(
2
)
Approved Pro
Optimum Waterproofing and Construction
80 Baruch Dr #6b
1.50(
2
)
Approved Pro
154 local quotes requested
9 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Overall, the project did not resolve the issue that I used Angi's for. In May, after a period of rain, I noticed that there was water accumulating in the basement floor of the property in Flushing, NY. Because of that I decided to seek out contractors to resolve the issue. I contacted many companies through and outside of Angi's. Through the estimates I learned that there were various options to resolving the issue of water accumulating in the center of the basement: french drain system, sump pumps, and also waterproofing the side of the property. Optimum Waterproofing and Construction (OWC) was willing to perform the job for $5,000 (but $4,000 if paid in cash), which was cheaper than the other companies that had come out to give me an estimate. The understanding was that the waterproofing would 1) have to fit my budget, as the property had undergone extensive renovations because of damages left by a previous tenant, 2) resolve the issue with the water coming in through the side of the building and forming a puddle in the center of the basement, and 3) the work would have to be done promptly, as a new tenant would be coming in. They recommended to waterproof the side of the property, approximately 10 linear feet along the property side. They agreed to start the day after the estimate. The next day, two laborers were sent to my property to break the concrete and dig the dirt (to expose the foundation) during inclement weather. They had performed the work underneath some tarp they had attached to the side of the house and on top of an adjacent fence (the neighbor’s property). After they had performed that work, the two who had come for the estimate explained to me, on site, that they could not continue with the work they had initially estimated, explaining that they had never seen a foundation that was so damaged. They said I required a sister wall and that would cost me another $10,000. I asked for some time to think it through. During this time I took photos and communicated with my principal and some other contractors and waterproofers that I had met while receiving estimates from other companies. Of course in the beginning I was flustered; however, one of the other waterproofers (A.M. Shield Waterproofing Corp.) said that “it doesn’t look too bad honestly. A good stucco coat would take care of that…” After a while, I asked if they could just close up the hole for the time being so that I could assess my options a bit further. They said they could not and that additional work had to be done, essentially putting me under duress to accept additional charges. I insisted that they continue the job as previously agreed upon, but the contractor said it was not possible and that I would have to do more work, which initially was an estimate for $10,000. Over the span of two hours I assessed my option by discussing it with other professionals and also my principal. During that time other alternatives were thrown out, one for $6,000 and another for $5,000. However, I was unable to meet them near any of the suggested price points. I even inquired about financing options, which I was informed they did not have that available. We compromised and he suggested foundation repair for an additional $1,000, bringing the total to $5,000. However, it was already too late for them to continue their work, and so the job was to be completed the following day. The excavated area was left open without proper barricades, but I used that opportunity for another general contractor to swing by. He (J.F.A.P. Inc.) also stated, “It doesn’t look like much of an issue. They just need to patch that up with stucco.” However, after he saw the work that was being performed, he advised me to make sure that they dug all the way down to the foundation to do the waterproofing. Additionally, he told me to make sure that the workers compacted the soil when they were refilling the hole (which was not being done, until I told them to). Although I am understanding of modifications, OWC knew I was operating off a budget and it seemed like they were using the inclement weather and also the fear of possible foundation issues to pressure me into a decision. They additionally wanted to charge me for the cement to cover the hole they dug as well as for trash removal (it has been my consistent experience with contractors that they have an understanding that they should leave the premises in the same condition, aside from the work performed). From my perspective, it just looked like OWC wanted to tack on additional fees wherever and whenever possible. Although the removal of trash and the cement work was included in the $5,000, I did feel that everything leading up to the resolution was underhanded. The following day they completed the work; however, the original problem still persists. On May 31st I sent OWC a picture of the leak in the basement. The text message did not go through. I tried calling them approximately 5 times, but no calls were being answered. I even sent an email: "I've been trying to get in touch via phone, but I am unable to get through...." When the communications seemed impossible, I contacted Angi and voiced my concern. After I spoke with a representative from Angi, I was able to get in touch with OWC. I opted not to file a formal complaint at this time, as I wanted to give OWC the benefit of the doubt and try to resolve this without involving Angi's more formal policies. After the phone call, I attempted to set a time with OWC for them to come see the issue. After a few attempts they agreed to come out to the property on June 4th. After inspection and also running a waterproofing test (running the hose in the area they waterproofed for approximately 30 minutes over the concrete they had covered the dirt with), they said that it was not their workmanship that was at issue. They said that the waterproofed wall was causing the water to travel around the waterproofing and enter in through new areas. If that was the case, they are the professionals and should have known that would have been the result. They said to contact again during the next instance, but I decided to forego communications with OWC directly in hopes of a resolution. If anything, it sounds like a sump pump should have been installed in addition or they should have done a French drain system. On July 24th my tenant contacted me and informed me that the basement was leaking again. Pursuant to my experience discussing this issue with OWC, I did not bother to contact OWC this time, because it sounded like they were going to skirt responsibility. Overall, I am upset that OWC feigned this was not a problem with their workmanship or services. I find that viewpoint to be problematic. Nobody pays a contractor to attempt to fix a problem. We pay to have the problem solved. In my situation, the problem was not fixed and I ended up spending $5,000 with nothing to show for. I had given them an opportunity to rectify the issue last time, but it was to no avail."

Mike L on July 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Overall, the project did not resolve the issue that I used Angi's for. In May, after a period of rain, I noticed that there was water accumulating in the basement floor of the property in Flushing, NY. Because of that I decided to seek out contractors to resolve the issue. I contacted many companies through and outside of Angi's. Through the estimates I learned that there were various options to resolving the issue of water accumulating in the center of the basement: french drain system, sump pumps, and also waterproofing the side of the property. Optimum Waterproofing and Construction (OWC) was willing to perform the job for $5,000 (but $4,000 if paid in cash), which was cheaper than the other companies that had come out to give me an estimate. The understanding was that the waterproofing would 1) have to fit my budget, as the property had undergone extensive renovations because of damages left by a previous tenant, 2) resolve the issue with the water coming in through the side of the building and forming a puddle in the center of the basement, and 3) the work would have to be done promptly, as a new tenant would be coming in. They recommended to waterproof the side of the property, approximately 10 linear feet along the property side. They agreed to start the day after the estimate. The next day, two laborers were sent to my property to break the concrete and dig the dirt (to expose the foundation) during inclement weather. They had performed the work underneath some tarp they had attached to the side of the house and on top of an adjacent fence (the neighbor’s property). After they had performed that work, the two who had come for the estimate explained to me, on site, that they could not continue with the work they had initially estimated, explaining that they had never seen a foundation that was so damaged. They said I required a sister wall and that would cost me another $10,000. I asked for some time to think it through. During this time I took photos and communicated with my principal and some other contractors and waterproofers that I had met while receiving estimates from other companies. Of course in the beginning I was flustered; however, one of the other waterproofers (A.M. Shield Waterproofing Corp.) said that “it doesn’t look too bad honestly. A good stucco coat would take care of that…” After a while, I asked if they could just close up the hole for the time being so that I could assess my options a bit further. They said they could not and that additional work had to be done, essentially putting me under duress to accept additional charges. I insisted that they continue the job as previously agreed upon, but the contractor said it was not possible and that I would have to do more work, which initially was an estimate for $10,000. Over the span of two hours I assessed my option by discussing it with other professionals and also my principal. During that time other alternatives were thrown out, one for $6,000 and another for $5,000. However, I was unable to meet them near any of the suggested price points. I even inquired about financing options, which I was informed they did not have that available. We compromised and he suggested foundation repair for an additional $1,000, bringing the total to $5,000. However, it was already too late for them to continue their work, and so the job was to be completed the following day. The excavated area was left open without proper barricades, but I used that opportunity for another general contractor to swing by. He (J.F.A.P. Inc.) also stated, “It doesn’t look like much of an issue. They just need to patch that up with stucco.” However, after he saw the work that was being performed, he advised me to make sure that they dug all the way down to the foundation to do the waterproofing. Additionally, he told me to make sure that the workers compacted the soil when they were refilling the hole (which was not being done, until I told them to). Although I am understanding of modifications, OWC knew I was operating off a budget and it seemed like they were using the inclement weather and also the fear of possible foundation issues to pressure me into a decision. They additionally wanted to charge me for the cement to cover the hole they dug as well as for trash removal (it has been my consistent experience with contractors that they have an understanding that they should leave the premises in the same condition, aside from the work performed). From my perspective, it just looked like OWC wanted to tack on additional fees wherever and whenever possible. Although the removal of trash and the cement work was included in the $5,000, I did feel that everything leading up to the resolution was underhanded. The following day they completed the work; however, the original problem still persists. On May 31st I sent OWC a picture of the leak in the basement. The text message did not go through. I tried calling them approximately 5 times, but no calls were being answered. I even sent an email: "I've been trying to get in touch via phone, but I am unable to get through...." When the communications seemed impossible, I contacted Angi and voiced my concern. After I spoke with a representative from Angi, I was able to get in touch with OWC. I opted not to file a formal complaint at this time, as I wanted to give OWC the benefit of the doubt and try to resolve this without involving Angi's more formal policies. After the phone call, I attempted to set a time with OWC for them to come see the issue. After a few attempts they agreed to come out to the property on June 4th. After inspection and also running a waterproofing test (running the hose in the area they waterproofed for approximately 30 minutes over the concrete they had covered the dirt with), they said that it was not their workmanship that was at issue. They said that the waterproofed wall was causing the water to travel around the waterproofing and enter in through new areas. If that was the case, they are the professionals and should have known that would have been the result. They said to contact again during the next instance, but I decided to forego communications with OWC directly in hopes of a resolution. If anything, it sounds like a sump pump should have been installed in addition or they should have done a French drain system. On July 24th my tenant contacted me and informed me that the basement was leaking again. Pursuant to my experience discussing this issue with OWC, I did not bother to contact OWC this time, because it sounded like they were going to skirt responsibility. Overall, I am upset that OWC feigned this was not a problem with their workmanship or services. I find that viewpoint to be problematic. Nobody pays a contractor to attempt to fix a problem. We pay to have the problem solved. In my situation, the problem was not fixed and I ended up spending $5,000 with nothing to show for. I had given them an opportunity to rectify the issue last time, but it was to no avail."

Mike L on July 2025

...
Showing 1-10 of 213

FAQs for basement waterproofing projects in Brooklyn, NY

Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:

  • Water in your basement, including damp walls or puddles on the floor

  • Mold spots in your basement

  • Musty smells or odors

  • Warped doors or walls

  • Cracks in walls

  • Insect issues, such as cockroaches and termites

You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home. 

However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.

Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.

Several factors dictate if you should waterproof the interior or exterior of your basement. Waterproofing the exterior of your home is a great option if you use your basement for storage, as it provides the most protection from water and water damage. If you prefer work done outside of your home versus inside, exterior waterproofing is best for you. However, interior waterproofing is often less expensive since the area is easier to reach and requires less labor.

The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in. 

If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.

The Brooklyn, NY homeowners’ guide to basement waterproofing services
From average costs to expert advice, get all the answers you need to get your job done.
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