average cost per square foot for a shell
Howdy, I just received an estimate range of $125.00 to $150.00 per square foot for an addition shell in the Washington DC/Baltimore Maryland corridor.The addition is roughly 650 square feet, with a studded basement level to line up with my ground level walk-out basement, a main level, and attic trusses on the roof.ne of the things that bothers me is that there is a local modular home builder that will put up and entire 840 square foot house with full basement, heating, wiring and finished interior for just about the same cost per square foot.