I've had numerous issues with roofing leaks, molding, and electrical. My most recent roofing repair attempt just received the following response from the contractor:
"Unfortunately we cannot guarantee a roof repair like this as we can only seal the suspected areas where the leak is coming from.
In this particular case, there have been reports of other homes in your neighborhood that have had a similar issue and the cause of the leak was the utility boots, vents, or underlayment during driving rains - possibly an issue from the original construction. Replacement of utility boots/vents or the roof as a whole may be required to resolve this issue"
I've had 5 roofing leaks in 39 months. Totally unacceptable for new construction.