I purchased a home in Philadelphia back in 2014. The home was considered new construction. Since then, my wife and I have dealt with severe leaking. The builder attempted to fix the problem multiple times however, after a year he vanished and refused to address the problem.
Horn Williamson is a Philadelphia law firm that handles a lot of homeowners who purchase new homes with defects. I woudl reach out to those attorneys to get an informed opinion of what your options may be.