My parents home is over 65 years old. They had an issue with water backing up from their kitchen and laundry room sinks. Mark made time to come and inspect the situation on the day I had called him. He explained everything that was going on and told me of all the other possible issues that may come up. He showed up on time, very courteous and professional. He was very respectful of my elderly parents and made sure that he left the house in the same condition as when he started. I would definitely recommend Mark to anyone who is looking for professionalism and honesty. Thanks Mark!