As an observer of people's builds can I make a suggestion....
People please use you date stamp function on your digital cameras...I understand that date stamps are ugly and look sh!tful in the album...so by all means take some "money shots" without the date stamp for "memories". However, if you are going to need your photos to resolve timing issues of what happened when with your builder then it would be much easier with a date stamped photo. It helps as a memory jogger as well.
From a personal experience when I built....I received a frame stage payment request from the builder, I had a date stamped photo which I'd taken on the day I received the invoice showing that the garage roof trusses were not up yet. I emailed the photo to the builder and told them to resubmit when the frame was completed...no arguments with builder.
Cheers, Mike