Regardless of what phase you are in you need to know the rules of the game. Tarions
Construction Performance Guidelines are a guide for the dozens of issues with regards to new home warranty. As well, this is a valuable reference to help you identify issues found during your PDI. BUT, these guidelines, even if you knew every rule, would never replace having a quality inspection of your new home which often finds things that are missing, poor workmanship issues, building code violations, and other defects, and as well, a proper inspection explains the functional equipment in the home as well as maintenance requirements.
http://www.tarion.com/warrenty-protection/Documents/CPG%203rd%20Edition%20Jan%201.pdf