Well I'll give Porter Davis credit. We spat it a little bit over this latest contract variation (in a nice way of course) and our lovely Megan (Client Relationship Manager or whatever wanky title they have) has been very good in responding straight away to our concerns.
It appears that perhaps we should have investigated this business of Energy Ratings a little bit more before we let fly with emails. We are told that even making the slightest change to the standard home (for example, we changed the laundry door from a full glass door to a half glass door - and no this is not a question for the psychology buffs about whether the glass is half full or empty) it may in fact change the requirements for a 5 Star Energy Rating.
So Porter Davis are back in the good books .... they have given us $500 off the variation cost due to the fact that this should not have been delayed so they will wear this cost. Wasn't necessary really given that their re-assessment is justified but we are not going to say no to it!
Very happy again. Yippee for me