In this case, the builder's sales manager / general manager can be the best sources for interpretation on the Alberta 5 Year Home Warranty. You better email him/her for answer. Later on, this is the basis of understanding, and the commitment that builder has to comply. Not suggesting you for such verbal interpretation over the phone. Builder could deny any verbal commitment. Never engage yourself in a situation of "you said, I said" if there is possibility of misunderstanding and dispute. It got to be black and white in paper, which can be in the email.