4.7 
140 *The Angi rating for Basement Waterproofing companies in Commack, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
*The HomeAdvisor rating for Basement Waterproofing companies in Commack, 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 April 25, 2026
Serving Commack, NY and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"George did the waterproofing in my basement, it was a good job"
+12
Serving Commack, NY and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
"These guys were great. I had mold in my basement walls. This company was very knowledgeable and their price was very good. In one day not only was all the mold gone but they also waterproofed my basement. They were professional and fast. I highly recommend them."
Serving Commack, NY and surrounding areas
Approved
In business since 1990
Free estimates
Emergency services offered
"James, his brother Mike and their crew were all you would be looking for in a company. Very polite and respectful. They did all the work as per contract in the time specified. Their workmanship and attention to detail was exceptional. We had other estimates for the same scope of work which came in much higher. We would definitely recommend them for anyone considering basement waterproofing."
+22
Serving Commack, NY and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"I called the owner and he responded quickly and was able to provide a fair quote. The crew showed up on time and did great work."
Serving Commack, NY and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Moises and his crew repaired water rotted wood in difficult locations and completely finished the garage to every detail from insulation to molding, as shown in pictures here. They thought of every detail that shows their pride over their work. Not only is their work top notch, but they are also easy to work with and very communicative through the whole process. I have already hired them for a second job."
+172
Serving Commack, NY and surrounding areas
Approved
In business since 1991
Free estimates
Emergency services offered
"Good. They knew what they were doing and did not the advantage of the situation"
Serving Commack, NY and surrounding areas
Approved
In business since 1981
Free estimates
Warranties offered
"PERFECT!! Joe (the owner) was wonderful"
+180
Serving Commack, NY and surrounding areas
Approved
In business since 1994
Free estimates
Customers say: True professional
"Top notch workmanship. Honest and reliable. They stay with the project through the finish. Very helpful in making suggestions when needed. I strongly recommend Lorenzo Napolitano for your next project."
+72
Serving Commack, NY and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"All their work was excellent. Not only did they replace our roof and repair water damage in our dining room, we had them do other jobs too. Replacement basement windows, outdoor lighting, and fencing. I would definitely hire them again."
Serving Commack, NY and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"Im am so happy with the work that was done on my house. Tyler came and gave a very fair estimate on lifting my concrete side entrance stairs to my basement. He explained every step of the process and did exactly what we wanted with no issues. Everything was done to perfection. No damage was done and you cant even tell the stairs ever needed a repair in the first place. I would highly recommend this company and would hire again for any future jobs."
From average costs to expert advice, get all the answers you need to get your job done.
Need to fix basement water problems or safeguard your home in New York, NY from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
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Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
Dealing with a damp basement? Follow these steps for DIY basement waterproofing to keep water and moisture out and boost your home’s energy efficiency.
Struggling with a damp basement? Learn about basement waterproofing and how these tips can help keep your basement safe from the elements.
Can’t seem to get rid of the moisture and mold in your basement? Learn why basements tend to hold moisture and how to get rid of moisture in the basement.
