Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Ronkonkoma, NY

There are 17 highly-rated local basement waterproofing pros.

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TRUSTED BY RONKONKOMA, NY HOMEOWNERS

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    Average homeowner rating
  • Verified reviews icon30
    Verified basement waterproofing services reviews

Basement waterproofing pros in Ronkonkoma

BuildRite Pro Inc.

5507 Nesconset Highway
3.95(
20
)

BuildRite Pro Inc.

5507 Nesconset Highway
3.95(
20
)
185 local quotes requested

BuildRite Pro – Your Trusted Partner in Home & Commercial Remodeling At BuildRite Pro, we specialize in delivering top-quality residential and commercial construction services across Long Island and the New York Metro area. From complete home remodeling and deck installations to basement renovations, stucco, concrete work, and interior/exterior upgrades, we handle every project with unmatched craftsmanship, attention to detail, and reliability. With decades of combined experience, our licensed and insured team ensures every project is completed on time, on budget, and to your exact specifications. Whether you’re upgrading a single room or building out an entire space, BuildRite Pro is the professional team you can count on. Now Offering Financing! We believe every homeowner deserves a beautiful and functional space. That’s why we offer affordable financing options to make your dream project a reality—without the upfront financial burden. ✅ Licensed & Insured | ✅ Free Estimates | ✅ Financing Available 📍 Serving Suffolk, Nassau, and NYC Boroughs Let BuildRite Pro turn your vision into reality—professionally built, perfectly done.

"Started demo framing of basement is off by feet and inches. Plumbing is all wrong not up to code"

Elaine R on August 2025

BuildRite Pro – Your Trusted Partner in Home & Commercial Remodeling At BuildRite Pro, we specialize in delivering top-quality residential and commercial construction services across Long Island and the New York Metro area. From complete home remodeling and deck installations to basement renovations, stucco, concrete work, and interior/exterior upgrades, we handle every project with unmatched craftsmanship, attention to detail, and reliability. With decades of combined experience, our licensed and insured team ensures every project is completed on time, on budget, and to your exact specifications. Whether you’re upgrading a single room or building out an entire space, BuildRite Pro is the professional team you can count on. Now Offering Financing! We believe every homeowner deserves a beautiful and functional space. That’s why we offer affordable financing options to make your dream project a reality—without the upfront financial burden. ✅ Licensed & Insured | ✅ Free Estimates | ✅ Financing Available 📍 Serving Suffolk, Nassau, and NYC Boroughs Let BuildRite Pro turn your vision into reality—professionally built, perfectly done.

"Started demo framing of basement is off by feet and inches. Plumbing is all wrong not up to code"

Elaine R on August 2025


JD General Contracting

112 Locust Dr
No reviews

JD General Contracting

112 Locust Dr
No reviews

All phases of Roofing & Waterproofing Residential and Commercial No job too Big or too Small also work with insurance claims, Been in business for over 30 years family owned and operated ... License and fully insured thank you

All phases of Roofing & Waterproofing Residential and Commercial No job too Big or too Small also work with insurance claims, Been in business for over 30 years family owned and operated ... License and fully insured thank you



Honest Chimney

40 Universe Dr
5.00(
1
)

Honest Chimney

40 Universe Dr
5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Call The "Trusted Chimney Company" seen on News 12 many Times. We Do All Chimney Work. We specialize in Relining & Rebuilding Chimney's. With our 100% crush proof Stainless Steel Liners . Waterproofing & Flashing to keep water out. Masonry work Repointing & cement Wash Crowns. All Chimney Caps, Chimney Dampers. We are owner-operated business for 30 years on Long Island. Our material is made on Long Island .All work is Guaranteed . Credit Cards Accepted. Call today.

"Great job. Willy is super friendly and honest. Would def recommend"

Sarah J on April 2020

Call The "Trusted Chimney Company" seen on News 12 many Times. We Do All Chimney Work. We specialize in Relining & Rebuilding Chimney's. With our 100% crush proof Stainless Steel Liners . Waterproofing & Flashing to keep water out. Masonry work Repointing & cement Wash Crowns. All Chimney Caps, Chimney Dampers. We are owner-operated business for 30 years on Long Island. Our material is made on Long Island .All work is Guaranteed . Credit Cards Accepted. Call today.

"Great job. Willy is super friendly and honest. Would def recommend"

Sarah J on April 2020


Enviroduct

6 Stacy Dr
No reviews

Enviroduct

6 Stacy Dr
No reviews

Enviroduct is Long Island’s Number #1 Indoor Air Quality Service Provider. Enviroduct is local Long Island business that, Ron Palladino started back in 1996. It has been my hope to improve the health of Long Island, by giving the community clean quality air at their home or business. As the business has grown, my staff and I pride ourselves on our reliability, efficient work force and consistent customer satisfaction. This includes using state-of-the-art cleaning equipment and eco-friendly sanitizing agents, that will leave your home free of harmful allergen particulates and microbial growth. We are completely dedicated to improve your Indoor Air Quality.

Enviroduct is Long Island’s Number #1 Indoor Air Quality Service Provider. Enviroduct is local Long Island business that, Ron Palladino started back in 1996. It has been my hope to improve the health of Long Island, by giving the community clean quality air at their home or business. As the business has grown, my staff and I pride ourselves on our reliability, efficient work force and consistent customer satisfaction. This includes using state-of-the-art cleaning equipment and eco-friendly sanitizing agents, that will leave your home free of harmful allergen particulates and microbial growth. We are completely dedicated to improve your Indoor Air Quality.


QuickandSimple

467 Columbia St
No reviews

QuickandSimple

467 Columbia St
No reviews

We offer quality services to local clients at reasonable prices. Our courteous Home Improvement Service staff have the professional tools and experience necessary to help with all your needs. Fast, friendly, and fully functional; our team is up for every job, managing projects with the skill and experience our clients have come to expect. We always stand behind our work, with customer satisfaction being our #1 priority. Contact us to learn more about our incredible staff and how they can help you!

We offer quality services to local clients at reasonable prices. Our courteous Home Improvement Service staff have the professional tools and experience necessary to help with all your needs. Fast, friendly, and fully functional; our team is up for every job, managing projects with the skill and experience our clients have come to expect. We always stand behind our work, with customer satisfaction being our #1 priority. Contact us to learn more about our incredible staff and how they can help you!


Michael Anthony Construction

45-4 Knickerbocker Ave
4.93(
15
)

Michael Anthony Construction

45-4 Knickerbocker Ave
4.93(
15
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We specialize in Fire/Smoke, Flood/Water, Mold, Dry-rot damage clean ups and Construction/Restoration. We are on call 24/7 to provide you with our team of licensed and insured plumbers, electricians, clean up and restoration/renovation specialists to get your home back to an even better condition. We have state of the art equipment that allow us to provide you with the best services possible. We will help you step by step in the process of dealing with insurance adjusters, so you get everything that you are entitled too. Our company has been in in the industry since 2000, where we guarantee you'll be satisfied with our services.

"Great job!"

Tyler K on February 2024

We specialize in Fire/Smoke, Flood/Water, Mold, Dry-rot damage clean ups and Construction/Restoration. We are on call 24/7 to provide you with our team of licensed and insured plumbers, electricians, clean up and restoration/renovation specialists to get your home back to an even better condition. We have state of the art equipment that allow us to provide you with the best services possible. We will help you step by step in the process of dealing with insurance adjusters, so you get everything that you are entitled too. Our company has been in in the industry since 2000, where we guarantee you'll be satisfied with our services.

"Great job!"

Tyler K on February 2024


General constuction

252 52st Brooklyn
No reviews

General constuction

252 52st Brooklyn
No reviews
13 years of experience

Premium Concept Design,Inc NYC is a professional construction company in NYC. Since 1996, we have helped New York City homeowners and business owners with their remodeling, renovation and construction projects. Working closely with engineers and architects, Premium Concept Design,Inc specializes in environmentally friendly construction services in NYC. We understand the importance of sustainable construction services and building practices and contributing toward a greener city. We strive to use eco-friendly construction products on every project we complete, right down to the roofing and the electrical services. When we take on a construction project in NYC, we stay fully committed to each detail until completion. Everything that we do is built to last. If desired, we will see our clients throughout the entire construction process. From the initial architectural designs and layouts all the way to the final finishes and electrical work, Pyramid Group NYC provides precise, accurate and professional construction services in NYC. Services Provided Building planning | Architectural design | Site preparation | Floor planning | Construction | Plumbing installation service | Wall installation service | Roofing installation service | Utilities installation service | Insulation service | Electrical service | Flooring/finishing ᐧ

Premium Concept Design,Inc NYC is a professional construction company in NYC. Since 1996, we have helped New York City homeowners and business owners with their remodeling, renovation and construction projects. Working closely with engineers and architects, Premium Concept Design,Inc specializes in environmentally friendly construction services in NYC. We understand the importance of sustainable construction services and building practices and contributing toward a greener city. We strive to use eco-friendly construction products on every project we complete, right down to the roofing and the electrical services. When we take on a construction project in NYC, we stay fully committed to each detail until completion. Everything that we do is built to last. If desired, we will see our clients throughout the entire construction process. From the initial architectural designs and layouts all the way to the final finishes and electrical work, Pyramid Group NYC provides precise, accurate and professional construction services in NYC. Services Provided Building planning | Architectural design | Site preparation | Floor planning | Construction | Plumbing installation service | Wall installation service | Roofing installation service | Utilities installation service | Insulation service | Electrical service | Flooring/finishing ᐧ



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FAQs for basement waterproofing projects in Ronkonkoma, 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 Ronkonkoma, 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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