I am planning on adding a third garage (14 ft by 20ft ) to use as a dedicated shop. It will have a garage door, brick exterior (three walls), insulated and sheetrocked, but no HVAC at this time (maybe later). Will include 50 amp-220v service, with lights and many receptacles.
What is your experience of cost per square foot of such an addition? I realize the costs would vary a lot - we are in South Carolina in a metro area.