Locust Valley Basement Waterproofing

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Long Island Chooses Us

Linda Weiss

We feel very fortunate to have found this company. I met with Mike regarding leaks in the basement. He assessed the entire house, gave me options and clearly explained the process. Everyone from Mike, to the secretary in the office to the workers were absolutely amazing. They did the work as promised, gave us a reasonable price, and left the place immaculate. We could not be happier with the results! This is a great family owned business. You can’t go wrong!

rose smith

The work was done with the utmost professionalism and competence. The service representative was very thorough in examining the dehumidifier, air purifier and sump pump and provided any service needed including draining the pump.

Craig Todaro

Mark took it upon himself to come to my home and examine my issue himself. He is knowledgeable not only in basement waterproofing, but also in land grading, excavating and several other adjacent topics. While it was concluded my issue was not foundation oriented, he did not hesitate to propose several other creative ideas to help address my issue. He has a great disposition, and I would not hesitate to recommend his services to others.

Linda Russo

I bought my house 24 years ago, and for 24 years I lived with water coming in to my finished basement. A few years back I hired another company to put in a French Drain System which never worked. As the storms got worse the water in my basement increased. Because of my previous experience I was hesitant to hire another company until I read about ACM and met Mark who was highly recommended by my Home Service Company. Mark spent about 2 hours explaining the process, and what was needed. In February 2025 ACM put a extensive French Drain System which included taking down the sheet rock walls, demoing tile and placing a membrane along the whole perimeter of the drain system. All of this work was completed in 3 days exactly what Mark said. The guys were professional, polite, and best of all they were careful to save my Radiant Heating System which was under the tile. Since the French Drain System was placed I have not had 1 drop of water coming into my basement. I am very grateful to Mark's ACM Company, and was able to refinish my basement without fear of water damage. I highly recommend ACM Basement Water Proofing to all who are having water problems with their basement.

Maria Lacoste

ACM Basement Waterproofing did an excellent job in my basement, no more water intrusion. The job was handled professionally and on time. I am happy to recommend them.

William Rothstein

I chose ACM because of their "Best of Long Island" award, and I'm glad I did. Mark's crew (led by Joe) installed an interior French drain and a sump pump in our basement. Six months later, we've had no problems with water. These guys know what they're doing.

Links2282

My wife and I would like to say thank you to Mark and his team for their excellent work installing a French Drain in our finished basement. For years we had to worry about flooding if we got a large amount of rain in a short time. The entire staff was totally professional. knowledgeable, competent and efficient. They were clean and caring and after each day they protected the whole worksite. Without a doubt, we would recommend them for all your basement waterproofing needs.

Peter Webb

I called acm after finding water in the basement. Mark answered the call and quickly helped diagnose the issue. He guided me to check baseboard and sure enough a broken valve was causing this leak. It's good to find someone to help a homeowner without rushing to take their money. It's good to find a honest business man

Locust Valley’s Premier Basement Waterproofing Solutions

Locust Valley Basement and Crawl Space Water Problems Resolved

Year one in your Locust Valley home: a tiny crack appears in the basement wall. Year two: slight musty smell after rain. Year three: visible moisture after storms.

Year four: black mold behind stored items. Year five: structural foundation repair needed, crawl space remediation required, and you’re facing a $20,000 project.

This progression happens in Locust Valley homes from Bayville Road to Forest Avenue every day. The tragedy? Intervention at year one costs under half the price.

ACM Basement Waterproofing helps Locust Valley homeowners recognize and stop this progression, providing basement waterproofing that prevents the five-year slide from minor issue to major crisis.

Don’t spend double the cost just to repair damage and then get basement waterproofing. Instead get basement waterproofing first for your Locust Valley home and avoid having to pay for repair in the first place.

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Locust Valley Basement Waterproofing Customer Reviews

Customer reviews from Locust Valley coming soon! In the meantime, take a look at our testimonials page for reviews from customers from other towns.

Setting Up Your Locust Valley Home for Success

At ACM Basement Waterproofing we are changing the way basement and crawlspace repairs are done. We emphasize trust, transparency, and lasting protection. Our custom solutions, backed by premium products, don’t just fix problems, they give homeowners confidence and peace of mind every step of the way.

Hamlet of Locust Valley, NY; Town of Oyster Bay Building Department
Phone: 516-624-6200
Fax: 516-624-6240
Location: 74 Audrey Avenue
Oyster Bay, New York, 11771
Office Hours: Monday – Friday 9AM – 6PM

Hamlet of Locust Valley, NY; Town of Oyster Bay Links:
Town of Oyster Bay, NY
Town of Oyster Bay, NY Applications and Permits
Town of Oyster Bay Building Division

Contractors for Your Other Home Projects

This is a resource list of helpful contractors serving the Locust Valley area. This as a helpful reference and does not formally endorse any of the listed professionals.

Plumber
Rebmann Plumbing Heating & Air Conditioning
24 Seaview Blvd, Port Washington, NY 11050
516-535-9341

Electrician
H&A Long Island Electrician
203 Columbus Pkwy, Mineola, NY 11501
516-350-5489

Driveway Paving Contractor
Summit Paving & Masonry
30 Kelsey Ave, Huntington Station, NY 11746
631-464-7054

Landscaper
Hicks Landscape Design
100 Jericho Turnpike Suite 102, Westbury, NY 11590
516-334-0068

Masonry
Mighty Pavers | Mason Contractors Long Island
123 South St Ste 212, Oyster Bay, NY 11771
516-283-5258

Stop Basement Water Damage in Locust Valley

Year after year, water damage compounds in Locust Valley homes. Small problems become expensive emergencies. But this cycle stops when you call ACM.

Professional basement waterproofing ends the progression. Expert foundation repair fixes damage before it spreads. Comprehensive crawl space waterproofing prevents future issues.

Don’t let another season pass watching problems worsen in your Locust Valley home. The solution starts with one call to ACM—make it today.

Protect Your Home Today

We make it simple, affordable, and stress-free — with guaranteed results.

*50% Off Materials Discount applicable to new projects over $10,000
*All financing is subject to credit approval. Your terms may vary. Payment options through Wisetack are provided by our lending partners. For example, a $5,500 purchase could cost $253.54 per month for 24 months, based on a 9.9% APR, or $1,833.33 per month for 3 months, based on a 0% APR. Offers range from 0 to 35.9% APR based on amount requested and creditworthiness. Not all merchants and lending partners participate in 0% interest programs. Terms range from 3 - 120 months and may vary based on merchant, lending partner, or transaction size. State interest rate caps may apply. No prepaid finance charges or participation fees. See additional terms at wisetack.com/faqs.
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