Long Island's Top Rated Cleaning Experts

Highly recommended Arrived on time: cleaned cedar house and pavers on the property. Big dirty job was done beyond expectations. Brandon was a patient , pleasant guy and Kamil was a pro. Everything looks refreshed for the... More

Highly recommended Arrived on time: cleaned cedar house and pavers on the property. Big dirty job was done beyond expectations. Brandon was a patient , pleasant guy and Kamil was a pro. Everything looks refreshed for the summer . Very happy. I called KOS. 5 stars

We cannot recommend KOS highly enough. From the moment they arrived, it was clear we were working with professionals who truly care about their clients. Not only were they polite, thorough, and respectful of our home, but... More

We cannot recommend KOS highly enough. From the moment they arrived, it was clear we were working with professionals who truly care about their clients. Not only were they polite, thorough, and respectful of our home, but they were also the only company to detect additional mold damage that we were completely unaware of, damage that other companies overlooked entirely. Their findings prompted us to call our home inspector back to re-evaluate the situation. What truly stood out was their honesty and compassion. They explained everything in clear, understandable terms and never pressured us into unnecessary services. In an incredibly generous gesture, they loaned us an air purification machine free of charge while we coordinated additional work with another contractor. The team was fast, efficient, and left the space spotless. Every staff member we encountered was pleasant, knowledgeable, and professional. It’s rare to find a company that blends technical expertise with genuine kindness and integrity but KOS does just that. If you're dealing with mold or air quality issues, look no further. This is the team you can trust! Thank you.

Tom and his crew did an incredible job at our home. He was the only one to discover mold in our HVAC system after going through our basement. Our mold situation was taken care of then some. Very thorough and truly treated... More

Tom and his crew did an incredible job at our home. He was the only one to discover mold in our HVAC system after going through our basement. Our mold situation was taken care of then some. Very thorough and truly treated our home as if it was his own.

Buying a new home is stressful enough but when we found mold in the kitchen it knocked that stress level. We were very lucky to have found KOS Restoration. Tom was open and upfront about the steps that had to completed and... More

Buying a new home is stressful enough but when we found mold in the kitchen it knocked that stress level. We were very lucky to have found KOS Restoration. Tom was open and upfront about the steps that had to completed and their potential costs. Tom was knowledgeable about the why, what and how for the process. The crew was professional through and through. Constantly kept us up to date of what was happening. They were more than tolerant of the numerous questions that was asked. I would highly recommend them to anyone looking for mold remediation work in the area and any families going through this stressful process. Thank you KOS Restoration!

I had a sudden leak from the upstairs shower that traveled down to my garage. Erick showed up within the hour! After looking over the damage we went over everything in detail that he found as well as what the process for... More

I had a sudden leak from the upstairs shower that traveled down to my garage. Erick showed up within the hour! After looking over the damage we went over everything in detail that he found as well as what the process for remediation would look like to prevent further moisture and mold. The KOS crew arrived the day of and immediately started working. The office was wonderful in helping with speaking to insurance and helping get payment from them. Couldn’t recommend them highly enough! Thank you KOS RESTORATION!

KOS Cleaning and Restoration came out and did a bid on water damage in my crawl space from a broken water sewer line. Tom came within the hour gave us the most fair bid. The team arrived shortly after to start working. We... More

KOS Cleaning and Restoration came out and did a bid on water damage in my crawl space from a broken water sewer line. Tom came within the hour gave us the most fair bid. The team arrived shortly after to start working. We went with them as they explained in detail the work scope and approximate completion date. Work was done in a professional manner. This included removal of water and muck out. Install fans and humidifier until dry. Installed new vapor barrier. I'm a retired homeowner with 2 properties I know good work when I see it. Workers were knowledgeable and polite. l'd highly recommend this company.

KOS Cleaning and Restoration is everything you could ask for and a family owned business!!! We had some mold issues pop up in our attic on an inspection report during the sale of our home. We had 3 different companies come... More

KOS Cleaning and Restoration is everything you could ask for and a family owned business!!! We had some mold issues pop up in our attic on an inspection report during the sale of our home. We had 3 different companies come out to provide an evaluation for us. We went with KOS and the quote was free, they were right on time and super communicative! Tom personally called me throughout the process and kept me updated every step of the way. They truly make you feel like the most important person to them and as someone who deals with contractors every day, my husband and I can honestly say we were so impressed by their professionalism, attention to detail and quality of work. Thank you again to this amazing company!!

KOS Cleaning and Restoration is the VERY BEST. I contacted other companies however Tom from KOS provided the best assessment, of the situation and had a concrete plan to prevent the chances of the mold returning in my basement... More

KOS Cleaning and Restoration is the VERY BEST. I contacted other companies however Tom from KOS provided the best assessment, of the situation and had a concrete plan to prevent the chances of the mold returning in my basement. The company made special effort to make sure that our family was comfortable as we moved through the process and that included the field team as well as the office girls. This included text, phone calls and pictures. I can’t say enough about the knowledge, professional, attention to detail and customer service of KOS Cleaning and Restoration!

Tom from KOS Restoration was very helpful and kind. I was so scared we had a mold problem in our house after discovering some blackened wood behind our drywall. They picked up the phone promptly and got someone out to look... More

Tom from KOS Restoration was very helpful and kind. I was so scared we had a mold problem in our house after discovering some blackened wood behind our drywall. They picked up the phone promptly and got someone out to look at our issue the same day. The team showed care and concern that we had small children in the house and wanted to solve our problem asap. Extremely impressed and pleased with this company. They went above and beyond what was expected to inspect and remediate mold. Helped us with other issues that we had questions with around our house. Knowledgable, prompt, and kind to work with

I had an ongoing roof leak that I was not aware of until it resulted in mold growth on the inside of the attic space. KOS Restoration promptly responded to my call. Their estimator came out as scheduled, was very knowledgeable... More

I had an ongoing roof leak that I was not aware of until it resulted in mold growth on the inside of the attic space. KOS Restoration promptly responded to my call. Their estimator came out as scheduled, was very knowledgeable and gave a reasonable estimate. The restoration team arrived as scheduled and completed the work as anticipated. Everyone was very polite and efficient. I would highly recommend this company.