My fiancé and I purchased our home August 31, 2009. The sellers disclosure stated there was water in basement but a french drain was installed. After some research on the internet I learned that most french drains come with some time of a warranty. Our real-estate agent contacted the seller’s agent to find out what company installed in the french drain. The seller told our agent that she never had a french drain installed, she thought the rain spout was a french drain. We have received two estimates from water-proofers, the estimates range from $3,500 to $4,000. I have also heard that the seller may be able to get away with this because she rented the property out during her ownership,she never actually lived there... is this true ?