Posted on Google Linda WeissTrustindex verifies that the original source of the review is Google. 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!Posted on Google rose smithTrustindex verifies that the original source of the review is Google. 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.Posted on Google Craig TodaroTrustindex verifies that the original source of the review is Google. 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.Posted on Google Linda RussoTrustindex verifies that the original source of the review is Google. 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.Posted on Google Maria LacosteTrustindex verifies that the original source of the review is Google. 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.Posted on Google William RothsteinTrustindex verifies that the original source of the review is Google. 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.Posted on Google Links2282Trustindex verifies that the original source of the review is Google. 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.Posted on Google Peter WebbTrustindex verifies that the original source of the review is Google. 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
Posted on Google Linda WeissTrustindex verifies that the original source of the review is Google. 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!Posted on Google rose smithTrustindex verifies that the original source of the review is Google. 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.Posted on Google Craig TodaroTrustindex verifies that the original source of the review is Google. 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.Posted on Google Linda RussoTrustindex verifies that the original source of the review is Google. 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.Posted on Google Maria LacosteTrustindex verifies that the original source of the review is Google. 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.Posted on Google William RothsteinTrustindex verifies that the original source of the review is Google. 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.Posted on Google Links2282Trustindex verifies that the original source of the review is Google. 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.Posted on Google Peter WebbTrustindex verifies that the original source of the review is Google. 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
On a sunny day, Sagaponack homes feel like the picture of perfection—sprawling lawns, ocean breezes, and coastal charm. But beneath the beauty, basements and crawl spaces here face constant pressure from high groundwater and salty air.
ACM Basement Waterproofing knows Sagaponack well, from Daniels Lane to Sagg Main Street. We install custom solutions that block moisture, strengthen foundations, and protect against the damage that can follow even a small leak.
Don’t let hidden water issues undermine your Sagaponack home. ACM is here to keep it solid, safe, and storm-ready.
What might seem like a minor basement leak can quickly become costly, leading to mold growth, rotting wood, or pest infestations. Ignoring water intrusion only raises the stakes, with damages becoming more expensive the longer they go unchecked.
At ACM, we specialize in providing thorough waterproofing solutions tailored to your home. Our interior French drain systems are installed beneath the basement floor, intercepting water before it surfaces and guiding it to a sump pump that removes it from your property.
With ACM’s advanced waterproofing system in place, you can rest assured that your Sagaponack basement will remain dry and secure, even in the heaviest rains. Don’t wait for water damage to escalate—contact us today and take the first step toward protecting your home.
Beyond waterproofing, ACM offers expert services to address foundation issues. While basement wall cracks may seem harmless, they can be signs of more serious problems – especially horizontal or stair-step cracks- requiring immediate attention from experienced professionals.
Our team in Sagaponack uses cutting-edge techniques, including carbon fiber reinforcement, to stabilize your foundation walls. These durable straps bond securely to the surface, halting movement and reinforcing the structural integrity of your foundation.
Foundation problems often go hand-in-hand with water intrusion, which is why ACM provides comprehensive solutions to address both. If your home has foundation cracks or signs of basement water damage, reach out to us for help—our team is ready to restore your home’s stability.
Water intrusion isn’t just a basement problem. If you have a crawl space, moisture can easily find its way in, creating an environment ripe for mold, mildew, and other issues.
Fortunately, ACM offers an effective solution. Similar to our basement waterproofing approach, we install interior French drains and sump pumps within crawl spaces. This system efficiently removes any water that enters, keeping your crawl space dry and free from moisture buildup.
As Sagaponack’s trusted name in crawl space repair and waterproofing, we are ready to protect your home from water intrusion at every level. Don’t let moisture compromise your home’s health—call us today to explore your options.
At ACM Basement Waterproofing, we turn the challenge of foundation repair into a worry-free experience. We don’t just fix your basement—we partner with you, providing clear guidance and innovative solutions that protect your home for the long term. Your peace of mind is our priority.
Village of Sagaponak Building Department
Phone: 631-537-0017
Location: 3175 Montauk Highway
Sagaponack, NY 11962
Office Hours: Monday, Wednesday, Friday from 9:00 AM – 3:30 PM
Sagaponak, NY Links:
Sagaponak Building Department
Sagaponak Fee Schedule
Here’s a list of contractors who might be able to help with your home projects in Sagaponak. Please note that while we provide this information as a starting point, ACM doesn’t specifically endorse any of these contractors.
Plumber
Mr. Rooter Plumbing of The Hamptons
33 Flying Point Rd suite 131, Southampton, NY 11968
631-336-2134
Electrician
MBI Plus Electric Inc
15 Railroad Ave #2, East Hampton, NY 11937
631-324-1237
Driveway Paving Contractor
All Purpose Paving
1795 Osborn Ave, Riverhead, NY 11901
631-318-8667
Landscaper
Summerhill Landscapes Inc
6 Shaw Rd, Sag Harbor, NY 11963
631-725-0005
Masonry
Southampton Masonry
41 E Hampton Sag Harbor Turnpike, East Hampton, NY 11937
631-537-6353
Call ACM Basement Waterproofing today and get ahead of moisture and foundation damage before it starts. Our team knows how Sagaponack’s high groundwater, salty air, and seasonal storms can affect a home.
We install solutions that last—sealing basements, encapsulating crawl spaces, and reinforcing foundations so your Sagaponack home stays strong and dry.
The sooner you act, the better your results. Let’s start protecting your home now.
We make it simple, affordable, and stress-free — with guaranteed results.
