N.S.
I know you are probably not wanting to hear this but I will share my experience and I am telling you this only because I do not want you to get your hopes up and then get even more frustrated. We had the exact thing happen to us. They signed on the discosure and all the paper work that they had not water problems. The form they have is whether they have had water problems in the past 24 months or 12 months (I do not remember). There is absolutely no way to prove that they have had probs in that past period and anything you do will not help. We had a lawyer go through it and then got a second opinion from another lawyer and we could not get ANY recourse at all. You have no way of proving that the problem didn't just start or that they had flooding prior to 12 months ago. That would not give you a case. I have been through this and it sucks. We were out $10,000 even with insurance. Ours was also one month after moving into our home. Good luck with what I know is the most crappy situation ever.