Brand new house flooded

Will the builders warrenty cover the damage?

That would depend on the type of warranty issued. Typically, most 2 year warranties are for structural problems, however some builders also offer a one year warranty against defects in workmanship. Check your purchase contract also; if you obtained either FHA or VA financing, a one year warranty is required by the lender who financed your mortgage. If you do indeed have that one year warranty against defects in workmanship, you may have some recourse. Contact the warranty company directly; they'll be able to advise you if your damages are covered. At the very least, they should send out one of their inspectors to assess the damages and provide you a copy of that inspection as well.

This is long past, but what caused the flooding in your house? If it was a drain backing up into your house, then your insurance would take precedence. If it was a ground water problem, you would have to have flood insurance before there would be any remuneration from insurance, but then there is the additional question of how the land was graded and whether it was a foregone conclusion that minimal water would wind up coming into your house. Then there is the question of whether it was a change on someone else's property that directed the flow of ground water into your lot and into your house. Please have a person familiar with grading lots around houses look into the levels on your land and surrounding properties to see what he thinks the problem is. In the case of a poor grading job, once you took possession of the property, you bear some of the blame... unless the flood came near simultaneously. Clearlly if it happened once, it can happen again. Get any grading problems fixed, put in a backflow prevention so you don't get sewer overflow, and check to see if you are in a flood plane... if you are, get flood insurance.