Michael K.11/22/15I set up an appointment with Tony Koppers to look at an outdoor drainadge problem that was leaking into my basement in a DC Capitol Hill Row House. Tony was prompt to the appointment and within 5... More
tara z.01/27/21Koppers does not even deserve one star - they deserve negative stars. Whatever you do, DO NOT HIRE THEM. I am in a nightmare thanks to them. In 2017, I hired them to repair the foundation at my... More
Jessica S.08/14/18If I could give zero stars, I would. We had Tony come out to do an estimate in July. After no estimate was sent, we called to follow up in August. A week later, I got a call from their office... More
Veneece M.10/09/15The very best service and value with Kotter! Don't go anywhere else, they go over and above, and you can't beat the price. I am extremely happy with their work in waterproofing our family room.... More
Georgetaylor T.05/21/18Excellent service and workmanship. This Company is reliable, prompt, efficient and does expert work at a reasonable price. I highly recommend this company and would not hesitate to utilize their... More