Cost of building shell

Not counting the "soft" costs of design, engineering, permits, reproduction, etc., nor site preparation like demolition, debris removal, portable toilet rental, etc., the building shell alone came to $85 per square foot.

	Spent
Foundation	$7,570
Framing	$9,740
Windows and skylights	$2,469
Roof	$6,348
Stucco	$5,134
Exterior door	$1,056
Exterior paint (estimate)	$150
TOTAL COST of building shell	$32,467

That's for 382 new square feet attached to the existing house accomplished part time over three months and with considerable hands-on involvement.