How much does basement waterproofing cost?

<div>The <a href="https://www.angi.com/articles/how-much-does-basement-waterproofing-cost.htm">cost of basement waterproofing</a> 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. </div>

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Verified Reviews for Basement Leak Repair pros in East Williston, NY

*The Angi rating for Basement Leak Repair companies in East Williston, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Leak Repair needs.

*The HomeAdvisor rating for Basement Leak Repair companies in East Williston, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Leak Repair needs.

Last update on August 27, 2025

Reviewed in December 2012
Searched for over an hour and eventually traced the leak to my dehumidifier which had a clogged drain and was leaking onto the floor. Did this for free. No charge.
Groundworks
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Reviewed in October 2024
I Hired This company to repair cracks in my brick facade which was causing leaks. They gave me an estimate and started the project right away. The leaks stopped. We haven’t had any problems since. the work was great. Definitely recommend!
Gotham Restoration Group
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Reviewed in July 2020
After literally years of chasing leaks in my flat roofs, John and his team got rid of all of them and they weren't even in my roof. He is the leak whisperer! His crew was great and on time, clean and professional. I couldn't recommend them enough!
Leak Stoppers Inc
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Reviewed in December 2020
I had a leak in my foundation in my crawl space and found General Brick Designs on Angie’s list. I had other contractors look at the problem but found Ed to be more thorough and knowledgable when he came to evaluate the problem. He came in with his crew, was on site the entire time and was able...
GENERAL BRICK DESIGNS
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Reviewed in September 2016
Great. Eddie the owner was fantastic. Identified the problem and advised what the solution would be. The crew that performed the work were excellent. They explained exactly what they were doing and were professional and courteous. Left the backyard cleaner than the way they found it.
E & M Waterproofing Inc
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Reviewed in December 2014
The job was done in a timely very professional manner. My wife was at home while they were doing the work and she felt very comfortable and respected. The concrete around the house was cut and new concrete was put in to fix the leaking problem. It now looks very neat and water is no longer...
Nunez Construction and Painting
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Reviewed in November 2012
When they came over to do the estimate they said we needed a masonry and not basement water proofing. They were very helpful. Very very professional. When we needed them they came out on time and were very good.
Just Right Painting & Contracting LLC
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Reviewed in March 2016
Had a little flood in the basement while doing laundry. Called at 8:15 AM on Saturday morning, and someone came by 9:30 AM. Turned out it was just a clog, but they are always so quick to respond and very helpful. We called them a few weeks ago when it was freezing cold out, and we had no...
Advanced Professional Plumbing Heating & Cooling
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Reviewed in October 2014
The provider thoroughly inspected our basement for leaks and recommended a french drain system. Fortunately, the need is not immediate.
Sundahl Restoration LLC
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Reviewed in July 2020
I can’t say enough positive things about them! The team was just wonderful. They were thorough, conscientious, professional, and dedicated to getting the job done right. They uncovered the source of the leak (which took removing bricks and stone), fixed it, waterproofed the roof, and put...
A.M. Shield Waterproofing Corp
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Basement leak repair pros in East Williston

Classic Remodeling Group Inc

Classic Remodeling Group Inc

Customers say: Super punctual

Recommended by 93% of Angi customers

204 local quotes requested

Full service remodeling, roofing and siding contractors serving Long Island. Whether you are in need of new roof installation, roof restoration, or roof repairs; new siding installation, siding repairs; new windows & doors installation; kitchen remodeling; bathroom remodeling; we are the Long Island home remodeling contractors to call, due to our professionalism and affordability.

"It went excellent! John and his crew were very knowledgeable and very professional. The quote was also very fair. My family loves our new looking home. I will definitely recommend Classic Remodeling Group to friends and family."

Tony K on July 2025

Interior Source

Located In East Meadow

Located In East Meadow

Customers say: Quick response

Recommended by 97% of Angi customers

63 local quotes requested

Interior Source, Inc. is a family owned 5 Stars renovation company, reliable & trustworthy renovation company in Long Island. With over 20 years of experience in Kitchen, Bathroom, Basement & all interior renovation in Long Island, Interior Source offers exceptional home free consultation helping homeowners to implement their ideas into design reality. Interior Source is also proud to won 2 consecutive Angies Super Service awards 2022 & 2023 which stamped us as best renovation company in Long Island. We specialize in beautiful customized bathrooms & kitchens at an avoidable price. If you're looking for a company that provides unparalleled quality, outstanding service, and beautiful outcomes, then look no further than Interior Source. We work closely with each client to understand their unique needs and preferences, and our commitment to customer satisfaction means we won't rest until you are 100% happy with our work.

"Professional, Affordable, Excellent Work! We love our new kitchen and bathroom! From the beginning Mohammad Sayed stood out from the other contractors because he was professional, affordable and knowledgeable…even giving us sound advice before we hired him. His team did excellent work and were incredibly responsive, keeping us informed every step of the way. Mohammad always addressed our concerns promptly. He allowed us to lead the process by choosing what we wanted and how we wanted it. Mohammad and his team were professional, reliable, and made the entire process smooth and stress-free. The communication was excellent, and we appreciated how Mohammad listened to our needs and incorporated them into the design. We wholeheartedly recommend this contractor."

Christopher O on June 2025

OZ General Contracting Co Inc

OZ General Contracting Co Inc

Customers say: Super punctual

Recommended by 93% of Angi customers

38 local quotes requested

OZ General Contracting Co Inc. has an over 30 year extensive portfolio of incredible kitchen and bathroom renovations in Nassau and Suffolk County Long Island, NY. We are innovative, efficient, reliable, and we always exceed our client’s expectations.

"I hired Oz General Contracting Co Inc in 2013 to remodel my kitchen. The company also remodeled my half bath in 2021 and in 2025 remodeled our main bathroom and linen closet. Every project turned out great! Everyone involved with my projects was courteous, talented, and professional. Ozi Ovadia is a master at maximizing space. I highly recommend this company."

Frank D on April 2025

A to Z Plumbing Corp

108-20 62nd Drive

New on AngiNew on Angi•

Approved Pro

A to Z Plumbing Corp

108-20 62nd Drive

New on AngiNew on Angi•

Approved Pro

55 local quotes requested

27 years of experience

Welcome to A to Z Plumbing Corp we look forward to discussing your project please reach out to us for a quote.

Allied Construction Corp

Allied Construction Corp

Customers say: True professional

35 local quotes requested

36 years of experience

**We are now specializing in Kitchen Remodeling**At this time we are unable to take on Bathroom Remodeling projects**Our first priority has always been the satisfaction of our customers, and we take great pride in both the quality of our work and the quality of the customer service we extend to each and every one of our clients, regardless of the size of their project. When trusting Allied Construction Corporation with your home remodeling project, you are trusting a crew of dedicated and talented home remodeling experts to take you through every single step of the process, and to keep you up to date on developments. We always treat your project – and your home – with the utmost level of care and respect. We strive to ensure that every last detail of your work order is performed with the same level of quality we would apply to our own home. Our work over the years has proven to yield exceptionally high return on investment, making your home not only the haven you envisioned but also more valuable. What is more, we provide extremely affordable home remodeling services, making it possible for you to see your vision come to life without breaking the bank. We also offer Angie's List members a 10% Discount on all Labor. We have been on the Discovery Channel. (References upon request). Additional Phone: 516-500-8170 Additional email: [email protected].

"RUN FAR AWAY FROM ALLIED AND TOM. Tom took my money and did not complete the renovations as per our contract. He lied about having a licensed electrician to do electrical work, it was just one of his workers who's not licensed. I paid for a dumpster and when it was delivered by tom it was already half full from another allied job and I was asked to pay the full amount of $950. Tom didn't listen to anything I said regarding the work I requested and he changed my design and did work that was cheaper for him. I was priced for one of my ceiling's to be ripped out and reinstalled with new sheetrock, Tom waited until I was away on business then he installed sheetrock on top of the bad sheetrock and told me he ripped out the old sheetrock and installed the new sheetrock, I found out when my EC cut holes to install lights and we found 2 layers of sheetrock preventing the lights from being able to be installed. Allied construction is a cheap, sneaky company who will steal your money and breach your contract. Do not hire these people Tom is a lair. Tom wore a gun in my house on his hip and told me "I use this to get paid by customer who don't want to pay". Tom left live 120v wires hanging out of the walls and ceiling, he removed a banister and didn't replace it for 3 weeks making my home very unsafe for me and my 9 year old son."

Adam C on May 2025

Tanem Construction Inc

Tanem Construction Inc

Customers say: Quick response

Recommended by 100% of Angi customers

33 local quotes requested

Architectural student -turned engineer -turned entrepreneur. As a builder contractor in the field for over 30 years, I understand that honesty and integrity come first. I run a crew of four men, who I conduct on the job everyday and I am always on the job site. I'm now 30 years in business successful and still dedicated to my client's total satisfaction. Trying and succeeding to do a professional job for one important person at a time - you.

"Tanem has a long history of good work. Gene did several projects for me years ago and I was glad to find Paul picked up the same qualities Gene had established. Both are easy to work with, knowledgeable, make lots of helpful suggestions so the project comes out even better than I had thought it would. You tell Paul what you want done, and he, and Gene in an advisory role, find a way to make it even better. They are flexible and just know how to find solutions. Their crews know what they’re doing. Paul keeps checking and keeps you informed as work progresses. I couldn’t be happier to see Paul continuing the Tanem tradition."

Ken M on February 2025

Convenient Kitchen and Bath Design Inc

Convenient Kitchen and Bath Design Inc

Customers say: Super punctual

16 local quotes requested

29 years of experience

Whether it's finally time to get the gourmet kitchen of your dreams or you need a bathroom remodel to accommodate a family member's special needs, Convenient Kitchen and Bath Design is the remodeling contractor for the job. Established in 1996 by owner Joe David, our team has nearly 15 years of experience as kitchen bath remodeling contractors. We're a local, family owned company and we go above and beyond to bring our customers the beautifully remodeled homes they've always wanted. If you're ready to upgrade or enhance your house, Convenience Kitchen and Bath Design is ready to help. Our professionals are here to bring out the best in your home.

"Amazing! Joe and the team finished our kitchen in record time and everything looks spectacular. We couldn’t be happier."

Bernadette S on June 2024

"Amazing! Joe and the team finished our kitchen in record time and everything looks spectacular. We couldn’t be happier."

Bernadette S on June 2024

TAS Construction Corporation

TAS Construction Corporation

Customers say: Quick response

Recommended by 91% of Angi customers

22 local quotes requested

TAS Construction was established in 1996. I personally have 46 years of experience in construction and I take pride in holding customers' hands throughout projects from beginning to end. We pass along any discounts we get from our suppliers onto our customers and we treat your home like it's our own. We look forward to helping you in your construction needs.

"Very well."

Bob S on August 2024

"Very well."

Bob S on August 2024

Patzan Home Improvement Inc

Patzan Home Improvement Inc

Customers say: Quick response

Recommended by 100% of Angi customers

28 local quotes requested

Professional service at prices that fit any budget! Paint and any repair bathroom and kitchen! Call or contact us today to get a free estimate!

"communication was great the job was clean and finished in a timley fashion JOSE and crew were amazing"

Yaakov W on March 2025

Professional service at prices that fit any budget! Paint and any repair bathroom and kitchen! Call or contact us today to get a free estimate!

"communication was great the job was clean and finished in a timley fashion JOSE and crew were amazing"

Yaakov W on March 2025

Ambassador Home Improvement Inc.

Ambassador Home Improvement Inc.

Customers say: Quality work

75 local quotes requested

32 years of experience

Ambassador Home Improvement has been recognized as a top renovation and construction company by many homeowners on Long Island. One main reason is that we are one of the few residential contracting companies on Long Island with an "all in-house" team of professionals. Another is due to the value our clients receive in cost, quality of materials and turnaround time. Contact us today for a free consultation.

"From the day we hired Ambassador Home Improvement my wife & I were blown away by the company's professionalism. Unlike other contractors, our project manager was on site daily coordinating with their brilliant carpenters. Every team of professionals they brought in did a great job as well, making significant improvements to my homes plumbing & electrical systems. There were no surprise chargers or fees and our project stayed within the budget unless we chose an added service. I would highly recommend Ambassador to anyone looking to do a home project. They worked every day, never disappeared and once, when we had an issue with our HVAC, Joe our project manager moved heaven & earth to get someone here during a heat wave! They were able to get my system back on that same day! There is no job too big or small for them. Please think Ambassador for your next home project."

Russ B on October 2021

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FAQs for basement leak repair projects in East Williston, NY

The cost to finish a basement is $18,400 for the average homeowner. However, this cost could be as little as $2,800 or as much as $34,500, depending on the basement size and the materials needed. If your basement is already outfitted with electrical and plumbing, expect the cost to fall on the lower end.

For example, the drywall cost for this project averages around $1,750, but other features, like hiring a plumber, cost between $45 and $200 per hour.

The cost to remodel a basement is between $12,100 and $33,400 for the average homeowner. The price you pay can be as little as $3,500 or as much as $50,200, depending on the size and condition of your basement and the type of remodel you're doing.

If you're doing a simple project like adding a home office to your basement, you can expect to pay anywhere from $500 to $3,000. However, if you're adding a bathroom, which is an extensive project, you can expect to pay between $6,600 to $16,500.

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.

Although homeowners often use the terms basement remodeling and basement finishing interchangeably, they are quite different terms.

Finishing a basement is the process of taking a basement space that is not habitable and adding elements to make it usable. This includes adding plumbing, flooring, and insulation.

Remodeling a basement means taking an already existing finished basement and changing it, often by adding or removing walls, adding plumbing, or changing the existing flooring.

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 East Williston, NY homeowners’ guide to basement leak repair services

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

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