We live in a historic home with a large, finished basement. The previous homeowners had done some work to waterproof the exterior walls of the basement, but since we moved in a year and a half ago we've had flooding in the basement three different occasions, most recently during the May 2013 storms. When we get lots of rain in short periods of time, water would just flowed in and we had to pull up carpet and move furniture - it was a mess! I called Richard at Nelson Waterproofing last spring to get an estimate, but we didn't act on it until this year. When I called, he actually remembered me and honored the estimate he had given us a year ago. They were able to get started on our basement within two weeks from the time I called him and completed the project in three and a half days. Our initial estimate for the work was $5,700 and then I wanted to install a backup battery-powered pump which they did and that added $1000, bringing the total to $6,700. I think this was a very fair price for the amount of work done. They drilled/hammered out along the perimeter right next to the exterior walls of the basement and installed their WaterGuard system. This captures any water that enters the footing and sends it straight to the Sump Pump they installed in the lowest part of the basement. The two guys we had working at our house worked very hard, showed up on time every day and were very easy to work with - they answered any questions I had and coordinated with the plumber I hired to install the drain pipe for the pump. As messy a job as it was, they kept the area and the rest of our home very clean. There was minimal dust and they cleaned up as they worked. We had a heavy rain two days ago and there were no signs of water anywhere in the basement. It has even been less humid than before, probably since water isn't sitting in under the house in the footing. We're very pleased with the work they did and the finished product. We would recommend them.