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
In Hempstead, basements serve as storage, living spaces, and playrooms. But when water intrudes, those spaces become stressful instead of useful.
ACM Basement Waterproofing has helped Hempstead homeowners for decades, tackling everything from musty crawl spaces to shifting foundations. We’re more than contractors—we’re part of the Long Island community, protecting homes across Nassau County one at a time.
Your home deserves lasting protection. Call ACM today and keep your Hempstead basement safe and dry.
Is your basement damp, or are you concerned about foundation issues? When it comes to water damage or foundation repairs, ACM Basement Waterproofing is the name you can trust.
Whether you’re experiencing moisture problems or foundation cracks, we have the knowledge and skills to fix your home’s most pressing issues long-term.
As a family-owned business proudly serving the Hempstead community, we have built a reputation for delivering excellent craftsmanship and reliable service.
When you choose us, you can be confident that the job will be done right. Give us a call today at 631-581-0600 to get started.
Even a small leak in your basement can quickly escalate into more significant problems such as mold, wood decay, and pest invasions. The longer water sits, the more costly it becomes to repair the damage. Addressing water leaks promptly can save you significant time and money in the long run.
ACM offers thorough basement waterproofing solutions in Hempstead, designed to tackle leaks before they cause further damage. We install interior French drains beneath the basement floor, which effectively capture water and divert it to a sump pump, ensuring it is removed from your home.
With our waterproofing system, you’ll be prepared even during heavy rains, knowing your basement is protected from water intrusion. Contact us today to get started.
Beyond waterproofing, ACM specializes in solving foundation issues, including cracks that could signal serious structural concerns. Vertical cracks are often normal, but horizontal or stair-step cracks could be signs of bowing walls—an issue that requires professional attention.
Our skilled Hempstead team uses cutting-edge techniques like carbon fiber reinforcements to stabilize foundation walls, preventing further movement and ensuring long-term stability. Often, foundation problems are tied to basement water issues, and we’re equipped to handle both for a comprehensive solution.
If you’re experiencing foundation concerns, we’re here to help. Let our experts ensure your home’s foundation stays strong.
Even if your home has a crawl space, you’re not immune to water intrusion. Water in your crawl space can result in moisture buildup, mold growth, and other potentially hazardous conditions.
Fortunately, ACM offers a simple but effective solution. Like our basement waterproofing systems, we install French drains and sump pumps in crawl spaces to direct water away from your home, keeping the area dry and protected.
ACM has earned the trust of Hempstead homeowners when it comes to crawl space waterproofing. If you’re noticing water issues, don’t wait—contact us today.
At ACM Basement Waterproofing, we know foundation repairs can feel overwhelming, but they don’t have to be. We’re here to walk you through it, offering solid solutions and support from start to finish. Our goal? A strong, dry home that provides peace of mind you can count on.
Hempstead, NY Municipal Building; Building Department
Phone: 516-538-8500
Location: One Washington Street
2nd Floor, Hempstead, NY 11550
Office Hours: Monday – Friday 9:00 AM – 4:45 PM
Hempstead, NY Links:
Town of Hempstead, Building Department
Hempstead, NY Online Permit Center
Need a hand with a home project in Hempstead? Here are a few contractors who may be able to help. While ACM doesn’t officially recommend any of them, this list should give you a solid starting point.
Plumber
Atlas Plumbing & Heating
1225 Franklin Ave suite 325, Garden City, NY 11530
516-881-5875
Electrician
H&A Long Island Electrician
203 Columbus Pkwy, Mineola, NY 11501
516-350-5489
Driveway Paving Contractor
All Shore Paving Corporation
571 Waterview Rd, Oceanside, NY 11572
516-279-4591
Landscaper
Borja Landscaping & Construction, Inc.
159 W Marshall St, Hempstead, NY 11550
347-358-0654
Masonry
C&D Masonry and Construction
265 Sunrise Hwy #1-393, Rockville Centre, NY 11570
516-242-3757
Homes in Hempstead are more than places to live—they’re investments in family and future. But water damage, crawl space rot, and foundation cracks can all erode that value quickly.
ACM Basement Waterproofing helps Hempstead homeowners safeguard what they’ve built with lasting basement waterproofing, crawl space repair, and foundation repair.
Preserve your home’s strength, comfort, and value. Call ACM today for your free inspection.
We make it simple, affordable, and stress-free — with guaranteed results.
