With experience, electrical contractors have found that the framing is not really done until it's a dry box: house wrap going on even before the last nail goes in.
Not withstanding the contract or verbal assurances, it's discovered that GCs and owners feel free to re-frame right up until the last moment -- especially if the framing crew is still on site.
The extras imposed uppon the EC are not going to be accepted/ paid for as a consequence.
Further, the EC has all of the joy of working around another trade -- that's not used to working around others.
The correct sequence is:
Frame all the way to house wrap...
Plumbers...
Electricians...
Insulation...
Sheetrock...
For lowest cost: none of these trades expects to work around the others in residential spaces.
Everyone is bidding so tightly that they can't eat imposed mistakes, extras are not tolerated well.
Screwy, clever, ways of speeding up the process oft times result in bankruptcies of the GC.
