If any of these systems seem to require a transplant (i.e., a completely new system installed), a second opinion as to whether total new construction should be considered is in order. Remember, too, that once you start changing or adding to older systems they frequently seem to deteriorate faster. Some of this is undoubtedly due to the unavoidable disturbance of older systems (e.g., piping and ductwork) that can loosen deposits on their surfaces. This leads to clogging of lines or increased rates of corrosion.
In one of our recent projects, the superstructure exterior enclosure and roof accounted for only 15.6% of the cost, a figure that is fairly typical. For instance, in a new building that might cost in the vicinity of $140 per gross square foot to construct, only $21.84 is the basic structure. So you can see that the savings realized in a total remodeling can be far ...
