my personal opinion... since i had a new house built in 2001 ...
have them come out with you and look and the problems... do not accept the house until it is "acceptable" to you.. we had a "final" walk through and we pointed out every problem, and they were to come back and have them repaired/ fixed.. etc...
is this a single House by itself or are you part of a "community" where several houses are being built...?