Get matched with the best Basement Waterproofing pros in Nassau County, NY

Find waterproofing experts near you. Get free quotes for interior drains, sump pumps, and exterior sealing.

Rivertown General Contracting, LLC - Basement Waterproofing in Irvington, NY

Rivertown General Contracting, LLC

★ ★ ★ ★ ★ 4.7 (14 reviews)

Irvington, NY 10533

11 projects

Rivertown General Contracting, LLC, led by Jerry Carrafiello, prioritizes building lasting relationships alongside quality craftsmanship. With extensive experience in Westchester and Fairfield Countie...

Request Estimate View Profile

Gee Bee and Sons LLC - Basement Waterproofing in Garden City, NY

Gee Bee And Sons LLC

★ ★ ★ ★ ★ 4.7 (13 reviews)

Garden City, NY

4 projects

Gee Bee and Sons LLC is a comprehensive NYC construction firm specializing in the renovation, restoration, and rehabilitation of residential, commercial, industrial, and institutional buildings. With...

Request Estimate View Profile

Jfcorp - Basement Waterproofing in West Babylon, NY

Jfcorp

★ ★ ★ ★ ★ 4.7 (13 reviews)

West Babylon, NY 11704

1 project

JF Corp is a licensed and insured general contractor serving Long Island, NY, for over 25 years. We specialize in high-quality residential and commercial construction, including renovations, roofing,...

Request Estimate View Profile

Done Right Renovations LLC. - Basement Waterproofing in Queens, NY

Done Right Renovations LLC.

★ ★ ★ ★ ★ 4.7 (12 reviews)

Queens, NY 11419

11 projects

Done Right Renovations LLC has been delivering quality construction, remodeling, and maintenance services since 2020. Our expertise in design ensures comfortable, durable, and aesthetically pleasing i...

Request Estimate View Profile

Royale Renovations - Basement Waterproofing in Bronx, NY

Royale Renovations

★ ★ ★ ★ ★ 4.6 (12 reviews)

Bronx, NY 10452

10 projects

Royale Renovations is dedicated to delivering excellence in every project. With over a decade of experience, we offer professional expertise and personalized service. We uphold the highest industry st...

Request Estimate View Profile

Imperial Home & Office Improvements of LI, Inc. - Basement Waterproofing in Holtsville, NY

Imperial Home & Office Improvements Of LI, Inc.

★ ★ ★ ★ ★ 4.7 (11 reviews)

Holtsville, NY 11742

8 projects

Imperial Home & Office Improvements of LI, Inc. is a premier provider of home and office enhancement services across Long Island. Collaborating closely with homeowners and property managers, we ensure...

Request Estimate View Profile

ANT Contracting Inc. - Basement Waterproofing in Brooklyn, NY

ANT Contracting Inc.

★ ★ ★ ★ ★ 4.6 (11 reviews)

Brooklyn, NY 11237

11 projects

ANT Contracting Inc., led by Tamas Tiszold, specializes in residential renovations and high-quality custom millwork. Known for European craftsmanship, we provide personalized attention to every client...

Request Estimate View Profile

Stone Creations of Long Island Pavers & Masonry - Basement Waterproofing in Deer Park, NY

Stone Creations Of Long Island Pavers & Masonry

★ ★ ★ ★ ★ 4.7 (10 reviews)

Deer Park, NY 11729

154 projects

Stone Creations of Long Island specializes in masonry home improvements and outdoor living solutions. Serving Long Island, Queens, and Brooklyn, we offer custom brickwork, pavers, asphalt, and concret...

Request Estimate View Profile

Cascella & Sons Construction Corp. - Basement Waterproofing in Central Islip, NY

Cascella & Sons Construction Corp.

★ ★ ★ ★ ★ 4.7 (10 reviews)

Central Islip, NY 11722

25 projects

Cascella & Sons Construction Corp. brings over 30 years of industry expertise, making us the premier choice for your next project. We deliver high-quality remodels from concept to completion, collabor...

Request Estimate View Profile

Aesthetic Renovations - Basement Waterproofing in Bedford, NY

Aesthetic Renovations

★ ★ ★ ★ ★ 4.7 (10 reviews)

Bedford, NY 10506

15 projects

Aesthetic Renovations offers premier general contracting services for home repair, restoration, and remodeling in Westchester County, NY, and Southern Connecticut. Since 2002, we have delivered except...

Request Estimate View Profile

Verified Reviews for Basement Waterproofing pros in Nassau County, NY

*The Growcycle rating for Basement Waterproofing companies in Nassau County, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on July 10, 2026

Sara Johnson

Reviewed in December 2025

I had a great experience with this service. They completed my basement remodel on time and within budget. Very pleased with the craftsmanship!

Rivertown General Contracting, LLC Request a quote

Sarah Mitchell

Reviewed in June 2025

The team handled our bathroom update efficiently and effectively. Everything came together beautifully, and they were great at communicating throughout the process.

ET General Construction Inc. Request a quote

Christina Vargas

Reviewed in July 2025

I had a fantastic experience with their team. They transformed my backyard into an outdoor paradise. Highly recommend their services!

Stone Creations of Long Island Pavers & Masonry Request a quote

Sarah Williams

Reviewed in November 2025

Kh Property Management has been a lifesaver! They manage my properties perfectly and make my life so much easier. Truly a great team to work with!

KH Property Management Request a quote

Emily Davis

Reviewed in January 2026

The team I worked with was exceptional. They listened to my ideas and provided great suggestions. The project turned out beautifully, and I highly recommend their services.

Cascella & Sons Construction Corp. Request a quote

Cost Guide

How much does Basement Waterproofing cost in Nassau County, NY?

Typical basement waterproofing projects in Nassau County, NY range from $1,500 to $8,000, with most homeowners paying around $3,500.

$1,500

$3,500 Typical cost in Nassau County, NY

$8,000

LOWHIGH

Prices vary by project scope, materials, and local labor rates.

Per Sq Ft $10–$25

Per Project $1,500–$7,000

Per Linear Ft $20–$40

Last updated: April 2026

Basement waterproofing services in Nassau County typically cost between $1,500 and $8,000, with an average price around $3,500. Costs vary based on factors like the extent of water damage, the waterproofing method used, and the size of the basement.

Local contractors in Nassau County charge about $50 to $100 per hour for labor, which contributes to the overall project cost. Homeowners should check with the Nassau County Department of Public Works for any required permits, which may add additional fees and time to the project.

When comparing basement waterproofing quotes in Nassau County, inquire about the specific methods and materials used to ensure durability and effectiveness.

What affects the cost in Nassau County, NY?

Nassau County Labor Rates

Licensed waterproofing contractors in Nassau County typically charge $50–$100/hr, influenced by their expertise and project complexity.

Permits & Inspections

Many waterproofing projects require permits from the Department of Public Works. These permits can take time to obtain and may add to your overall costs.

Material Selection & Quality

The choice of waterproofing materials can significantly impact the project's cost, with higher-quality materials potentially increasing costs by 15%–25%.

Extent of Water Damage

The severity of water issues in the basement can greatly influence the cost. More extensive damage usually requires more comprehensive solutions, increasing overall project costs.

Frequently Asked Questions About Basement Waterproofing in Nassau County, NY

How long does the waterproofing process take?

The duration of the waterproofing process can vary based on the methods used and the extent of the issues. Generally, a typical basement waterproofing project in Nassau County can take anywhere from a few days to a week. Factors that can influence the timeline include the size of the basement, the complexity of the problem, and weather conditions. It's essential to have a thorough assessment conducted by a professional who can provide a more accurate estimate based on your specific situation. Proper planning and execution can ensure that your basement remains dry and secure for years to come.

Is basement waterproofing a DIY project?

While some homeowners may attempt DIY basement waterproofing, it is often more effective and safer to hire a professional. In Nassau County, waterproofing can involve complex issues that require specialized knowledge and equipment. Professionals can accurately assess the problem and implement the appropriate solutions, such as proper drainage systems or advanced sealing techniques. DIY methods may not address the root cause of the moisture, potentially leading to more significant problems down the line. Investing in professional waterproofing ensures a thorough and lasting solution.

What are the benefits of waterproofing my basement?

Waterproofing your basement offers numerous benefits, including enhanced home safety and increased property value. In Nassau County, a dry basement helps prevent mold growth, structural damage, and pest infestations that can arise from water intrusion. Additionally, a waterproofed basement can expand your usable living space, allowing for storage or additional rooms. It can also improve indoor air quality by reducing humidity levels. Ultimately, waterproofing is a smart investment that protects your home and provides peace of mind during severe weather events.

What are the common methods of basement waterproofing?

Common methods of basement waterproofing include interior sealants, exterior drainage systems, and sump pumps. Interior sealants help to prevent moisture from seeping through walls, while exterior drainage systems redirect water away from the foundation. Installing a sump pump can also help manage groundwater levels and prevent flooding during heavy rains. In Nassau County, where weather conditions can vary, a combination of these methods may be necessary to ensure a dry, healthy basement. Consulting with a waterproofing professional can help you choose the best approach for your needs.

What are the signs that my basement needs waterproofing?

Signs that your basement may need waterproofing include visible water stains, dampness, or mold growth on walls and floors. In Nassau County, especially during heavy rain or snowmelt, water intrusion can become more prevalent. Other indicators include musty odors, increased humidity levels, and cracks in the foundation. If you notice any of these issues, it's crucial to address them promptly, as they can lead to more significant structural problems and health risks. A professional assessment can help determine the best waterproofing solutions for your specific situation.

Common Basement Waterproofing services and their costs

Typical pricing in Nassau County, NY by service type.

Interior Waterproofing

Methods to prevent water from entering indoors

Method	Cost Range
Interior Drainage System A system to collect and redirect water.	$1,500–$4,000
Sump Pump Installation Installing a sump pump to manage water buildup.	$1,000–$3,000
Wall Sealant Application Applying sealants to walls for added protection.	$500–$1,500
Crawl Space Encapsulation Sealing off crawl spaces to prevent moisture.	$1,500–$3,500

Exterior Waterproofing

Preventing water entry from outside

Method	Cost Range
Excavation and Waterproofing Excavating around the foundation and applying waterproofing.	$3,000–$8,000
French Drain Installation Installing drains to divert water away from the foundation.	$2,000–$5,000
Foundation Crack Repair Repairing cracks in the foundation to stop leaks.	$1,000–$3,000
Waterproof Coating Application Applying waterproof coatings to the foundation.	$1,500–$4,000

Ready to start your basement waterproofing project? Get free quotes from vetted pros in Nassau County, NY.

Get Free Estimates

Price ranges are estimates compiled from publicly available data and may vary with project scope.

Find Basement Waterproofing Pros in other cities near you

Not finding what you are looking for in Nassau County? Check surrounding areas for basement waterproofing pros.

Find Pros for other jobs in Nassau County

If your Basement Waterproofing job is complete, use Growcycle to find quality Pros in Nassau County for any number of jobs.

Disclaimer: Some information on Growcycle Pros, including company details, projects, and contact information, is gathered from publicly available sources and provided "as is" without guarantees of accuracy or service quality. Growcycle does not endorse or guarantee the quality or reliability of any listed professionals. All trademarks and other intellectual property remain the property of their respective owners.

We use ActiveProspect's TrustedForm script to independently record and verify users' consent to be contacted. The TrustedForm script is embedded on our website and, when you interact with any page where it appears, it collects information such as the page URL; mouse movements and clicks; any contact details entered by the user; a snapshot of the page; the user's IP address; time spent on the page; the date and time the TrustedForm script loaded; timestamps of user interactions; and HTTP headers from the user's browser. For details on ActiveProspect's data collection and use practices, please review the ActiveProspect Privacy Policy.

Use My Current Location

Popular Locations

Rochester, NY New York, NY Syracuse, NY Buffalo, NY Brooklyn, NY Albany, NY Binghamton, NY Schenectady, NY Saratoga Springs, NY Ithaca, NY

Get matched with the best Basement Waterproofing pros in Nassau County, NY

Which of the following best matches your project?

Verified Reviews for Basement Waterproofing pros in Nassau County, NY

Sara Johnson

Sarah Mitchell

Christina Vargas

Sarah Williams

Emily Davis

How much does Basement Waterproofing cost in Nassau County, NY?

What affects the cost in Nassau County, NY?

Frequently Asked Questions About Basement Waterproofing in Nassau County, NY

Common Basement Waterproofing services and their costs

Interior Waterproofing

Exterior Waterproofing

Find Basement Waterproofing Pros in other cities near you

Related services for your Basement Waterproofing project

Find Pros for other jobs in Nassau County