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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TRUSTED BY DEER PARK, NY HOMEOWNERS

4.6
Average homeowner rating
117
Verified basement leak repair services reviews

Basement Leak Repair reviews from real Angi homeowners in Deer Park, NY

Last update on October 14, 2025

Raymond J.
0.0
01/2019
They were very unprofessional, they were tardy and late showing up and my basement still leaks and they damaged my property and they won't return my calls.
Quality Dry Basements
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Lisa H.
5.0
08/2017
E &M provided a written estimate, and most importantly, set up a date that they would be available to do the work. Service was professional, efficient, and very neat. They showed up exactly when I was told they would to repair the foundation's crack and install a drywall to drain water away...
E & M Waterproofing Inc
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Shew L.
5.0
11/2015
Dave was very responsive to our call and came on time as promised. He put a scope through the shower wall to look for signs of water leaking or damage and found none. He confirmed that the leak is not coming from the valves or any of the pipes. He showed me the missing grout between the...
Authentic Plumbing LLC
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Chris H.
5.0
12/2014
Also fixed leak in shower.
BARKER AVE PLUMBING AND HEATING
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Tammy M.
5.0
08/2014
Mike was extremely courteous, professional and friendly and so was his staff (Doug & Joe). I called Mike on 8/18 to speak to him about my issue. He came out to my home on 8/20 in the am to take a look at the problem and he quickly determined the cause of the leak in my basement and what was...
Mike Barrett Plumbing LLC
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Jackie S.
2.0
06/2014
Pete Fox talked a great story when he first came to the house in July of 2012. He could do everything I wanted and more. The first job was having his friend do the roof and the gutters. He did a fine job - he was very professional and the roof came out great. In fact, I couldn't figure...
Fox Family Home Improvement LLC
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Mary P.
4.0
11/2013
They were a little bit late coming to do the job and I had to call a couple of times to get the techs ETA. I had 2 faucets to be repaired and a leak in the basement under a sop sink. The technician was polite, friendly, knowledgeable , and thorough. The cost was about what I expected. I would...
Mr. Rooter Plumbing of Central LI
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Kristin C.
5.0
08/2012
Luc was referred to us because we are looking to have our basement remodeled but we had some water coming into our basement. My husband called and he was here within an hour to take a look. He did a very thorough job investigating the inside and outside of the house to see how the water was...
Attack A Crack
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Cindy G.
5.0
03/2012
We found a small leak in our basement but we couldn't determine the source of the problem. I called them and they came within a few hours to provide an estimate. Once we agreed to the work they came back a few hours later. They were very prompt and very professional. They found and repaired...
Robinson Plumbing
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Joelle M.
5.0
06/2011
The air conditioning unit in my attic was leaking water through the ceiling and into the master bedroom. I called Applied Mechanical and they were able to make an emergency service call within 90 minutes. The two technicians identified the problem and provided a range of options for...
Applied Mechanical Resources Inc
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Find Basement leak repair pros in Deer Park

Kitchen & Bath Works INC

Kitchen & Bath Works INC

Customers say: Quick response

Recommended by 99% of Angi customers

21 local quotes requested

Kitchen and Bath Works Inc has been owner operated and successfully in business since 1994. Offering a consultative approach and delivering on quality, custom work, our business has been overwhelmingly driven by word of mouth referrals. From start to finish, we stand by our work and our owner is committed to being present on all jobs.

"Lou renovated my kitchen last year and I was completely satisfied. I called him back this summer to gut and remodel my bathroom. He was extremely considerate, and he treated my house as if it were his own. My house is small, and I only have one bathroom. The project took nine days. I was anticipating that there would be a big mess and a huge inconvenience. But even the demo was done very neatly and efficiently. Lou even took the time to re-connect the toilet each night so that I wouldn't be left without. Lou did an amazing job, and it was a pleasure working with him. Once again, I am pleased to recommend Lou for your kitchen or bath project."

Janet M on November 2023

"Lou renovated my kitchen last year and I was completely satisfied. I called him back this summer to gut and remodel my bathroom. He was extremely considerate, and he treated my house as if it were his own. My house is small, and I only have one bathroom. The project took nine days. I was anticipating that there would be a big mess and a huge inconvenience. But even the demo was done very neatly and efficiently. Lou even took the time to re-connect the toilet each night so that I wouldn't be left without. Lou did an amazing job, and it was a pleasure working with him. Once again, I am pleased to recommend Lou for your kitchen or bath project."

Janet M on November 2023

JBL HOME IMPROVEMENTS INC

JBL HOME IMPROVEMENTS INC

Customers say: Quality work

Recommended by 90% of Angi customers

102 local quotes requested

JBL Home Improvements, Inc, located in St. James, is a family owned and operated remodeling business specializing in residential projects. Owner & Contractor David Kaplan, General Manager Jill Kaplan, along with their team of talented professionals, are dedicated to providing outstanding workmanship and customer service to homeowners who live in their community.

"Extremely pleased with the recommended supplies and workmanship."

Noreen C on September 2025

"Extremely pleased with the recommended supplies and workmanship."

Noreen C on September 2025

Classic Remodeling Group Inc

Classic Remodeling Group Inc

Customers say: Super punctual

Recommended by 93% of Angi customers

187 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.

"Guys did great job! Would hire again."

Beth K on October 2025

"Guys did great job! Would hire again."

Beth K on October 2025

Basement Man

5.00(

)

•Approved Pro

Basement Man

5.00(

)

•Approved Pro

Customers say: Quick response

Recommended by 93% of Angi customers

16 local quotes requested

WHY--THIS IS A JOB FOR BASEMENT MAN!!! Your locally owned and operated Basement Waterproofing Specialist. Why am I YOUR Basement Waterproofing Specialist? Because over a 38 year period, I've built over 110 customer homes all over Long Island and I know Basements! We stand behind and guarantee all of our work, so give us a call anytime for a free estimate.

"Things went great I'd hire him again"

John R on May 2025

"Things went great I'd hire him again"

John R on May 2025

Islandwide Contracting

Islandwide Contracting

Customers say: Quick response

42 local quotes requested

6 years of experience

At Islandwide Contracting LLC, we have been proudly serving Suffolk County and surrounding areas since 2019, bringing over 30 years of combined experience to every project. Our comprehensive range of residential and commercial construction services includes interior and exterior work, such as medical offices, restaurants, urgent care facilities, dormers, and extensions. We specialize in bathroom and kitchen renovations, as well as basement transformations. Contact us today for a free estimate at 631-779-9277, and let us help you build the dream you envision. **At Islandwide Contracting, we deeply appreciate the dedication and sacrifices of our military personnel, first responders, and senior citizens. As a token of our gratitude, we are proud to offer special discounts tailored specifically for these esteemed groups. Please inquire about these exclusive offers when you contact us, and let us assist you in bringing your vision to life.**

"Excellent. Workers were neat respectful and I was very happy with the results I will be using the company again for any work needed in my home."

Cathy V on June 2025

"Excellent. Workers were neat respectful and I was very happy with the results I will be using the company again for any work needed in my home."

Cathy V on June 2025

Stone's Construction Corp.

Stone's Construction Corp.

Customers say: Quality work

Recommended by 96% of Angi customers

27 local quotes requested

Stone's Construction has been in business since 1986. We are fully insured and have a clean record with Consumer Affairs. Our estimates are free and you deal with the owner. The company continuously provides customers with the best quality and value for the best prices out there. We specialize in Dormers,Extensions,Kitchens,Bathrooms,Basements,Siding, House Lifting, Porticos, Masonry

"I gave a deposit to start a job. A contract was never signed and work was never started. I decided to go in a different direction, Provider initially offered only a $250 refund, I deemed that unacceptable. Provider now has not responded to any attempted communication since approximately May 7."

Vincent P on May 2025

"I gave a deposit to start a job. A contract was never signed and work was never started. I decided to go in a different direction, Provider initially offered only a $250 refund, I deemed that unacceptable. Provider now has not responded to any attempted communication since approximately May 7."

Vincent P on May 2025

Northgate Home Improvement Corp.

Northgate Home Improvement Corp.

Customers say: True professional

Recommended by 98% of Angi customers

30 local quotes requested

Please call my mobile phone for faster service: 516-449-8700!! Also, please provide a call back number in your inquiry. Northgate Home Services is a complete home services company which will handle all of your home improvement needs - inside and out. I will personally work with you to design and complete your home improvement project so that it meets all of your needs and expectations. Northgate Home Services is licensed and insured in both Suffolk and Nassau counties.

"I have had Jeff and his guys renovate my ranch house in Melville. He has done 2 bathrooms, my basement and my kitchen. He has always been reliable and done great work. The house looks like new. He quickly corrects any problems and is always in touch. He and his guys are friendly and neat. His estimates are reasonable. I strongly recommend Northgate Home Improvement."

Peter P on March 2025

"I have had Jeff and his guys renovate my ranch house in Melville. He has done 2 bathrooms, my basement and my kitchen. He has always been reliable and done great work. The house looks like new. He quickly corrects any problems and is always in touch. He and his guys are friendly and neat. His estimates are reasonable. I strongly recommend Northgate Home Improvement."

Peter P on March 2025

OZ General Contracting Co Inc

OZ General Contracting Co Inc

Customers say: Super punctual

Recommended by 93% of Angi customers

35 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

"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

Allied Construction Corp

Allied Construction Corp

Customers say: True professional

34 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

"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

Unlimited Outdoor Designs

435 Brook Ave Unit 21

4.24(

)

•Approved Pro

Unlimited Outdoor Designs

435 Brook Ave Unit 21

4.24(

)

•Approved Pro

Customers say: Terrific value

242 local quotes requested

12 years of experience

Unlimited Outdoor Designs, specializing in Indoor Kitchens and Baths and Basement remodels. Fencing, Decks, Railings, Concrete, and Masonry work. We are family-owned and take pride in treating our clients like family. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing.

"Was professional and got it done in a timely fashion."

Michael N on May 2024

"Was professional and got it done in a timely fashion."

Michael N on May 2024

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Showing 1-10 of 220

FAQs for basement leak repair projects in Deer Park, 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 Deer Park, 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.

See all articles

Rachel Hoffman
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May 14, 2025May 14, 2025
How Much Does a Basement Remodel Cost? [2025 Data]
A basement remodel can often cost as much as adding another room. However, homeowners should consider the usefulness and ROI of a remodel.
Dan Simms
•
Dec 16, 2024Dec 16, 2024
How Much Does It Cost to Build a Bar in a Basement? [2025 Data]
A basement bar can add value to your home and serve as a great place to entertain. Use this guide on the cost to build a bar in your basement to get started.
Lawrence Bonk
•
May 16, 2025May 16, 2025
How Much Does Basement Waterproofing Cost? [2025 Data]
Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
Lawrence Bonk
•
May 21, 2025May 21, 2025
How to Keep Your Crawl Space Dry: 9 Tips to Prevent Moisture
Dealing with a damp crawl space? Use these eight simple tips to get rid of the moisture and water-related problems once and for all.
Amy Freeman
•
Oct 22, 2024Oct 22, 2024
25 Basement Remodel Ideas to Maximize Your Space
Thinking of refinishing your basement and looking for basement remodel ideas? Check out 25 ways to transform your subterranean space.
Dan Simms
•
May 2, 2025May 2, 2025
Finished Basement Code Requirements: A Complete Guide
Transforming your basement into the game room of the year? Here's what to know about finished basement code requirements before you get started.

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

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Get matched with top basement leak repair pros in Deer Park, NY

There are 17 highly-rated local basement leak repair pros.

Need a pro for your basement leak repair project in Deer Park, NY?

Concrete Foundation Repair

Batt, Rolled or Reflective Insulation Install or Upgrade

Seamless Metal Gutters Installation

TRUSTED BY DEER PARK, NY HOMEOWNERS

Basement Leak Repair reviews from real Angi homeowners in Deer Park, NY

Last update on October 14, 2025

Find Basement leak repair pros in Deer Park

Kitchen & Bath Works INC

Kitchen & Bath Works INC

JBL HOME IMPROVEMENTS INC

JBL HOME IMPROVEMENTS INC

Classic Remodeling Group Inc

Classic Remodeling Group Inc

Basement Man

Basement Man

Islandwide Contracting

Islandwide Contracting

Stone's Construction Corp.

Stone's Construction Corp.

Northgate Home Improvement Corp.

Northgate Home Improvement Corp.

OZ General Contracting Co Inc

OZ General Contracting Co Inc

Allied Construction Corp

Allied Construction Corp

Unlimited Outdoor Designs

Unlimited Outdoor Designs

FAQs for basement leak repair projects in Deer Park, NY

The Deer Park, NY homeowners’ guide to basement leak repair services

How Much Does a Basement Remodel Cost? [2025 Data]

How Much Does It Cost to Build a Bar in a Basement? [2025 Data]

How Much Does Basement Waterproofing Cost? [2025 Data]

How to Keep Your Crawl Space Dry: 9 Tips to Prevent Moisture

25 Basement Remodel Ideas to Maximize Your Space

Finished Basement Code Requirements: A Complete Guide

Get our Angi-powered app

Get matched with top basement leak repair pros in Deer Park, NY

There are 17 highly-rated local basement leak repair pros.

Need a pro for your basement leak repair project in Deer Park, NY?

Concrete Foundation Repair

Batt, Rolled or Reflective Insulation Install or Upgrade

Seamless Metal Gutters Installation

TRUSTED BY DEER PARK, NY HOMEOWNERS

Basement Leak Repair reviews from real Angi homeowners in Deer Park, NY

Last update on October 14, 2025

Find Basement leak repair pros in Deer Park

Kitchen & Bath Works INC

Kitchen & Bath Works INC

JBL HOME IMPROVEMENTS INC

JBL HOME IMPROVEMENTS INC

Classic Remodeling Group Inc

Classic Remodeling Group Inc

Basement Man

Basement Man

Islandwide Contracting

Islandwide Contracting

Stone's Construction Corp.

Stone's Construction Corp.

Northgate Home Improvement Corp.

Northgate Home Improvement Corp.

OZ General Contracting Co Inc

OZ General Contracting Co Inc

Allied Construction Corp

Allied Construction Corp

Unlimited Outdoor Designs

Unlimited Outdoor Designs

FAQs for basement leak repair projects in Deer Park, NY

What is the average cost to finish a basement?

How much does a basement remodel cost?

How is damp proofing different from waterproofing?

What's the difference between remodeling a basement and finishing a basement?

How much does basement waterproofing cost?

The Deer Park, NY homeowners’ guide to basement leak repair services

How Much Does a Basement Remodel Cost? [2025 Data]

How Much Does It Cost to Build a Bar in a Basement? [2025 Data]

How Much Does Basement Waterproofing Cost? [2025 Data]

How to Keep Your Crawl Space Dry: 9 Tips to Prevent Moisture

25 Basement Remodel Ideas to Maximize Your Space

Finished Basement Code Requirements: A Complete Guide

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