When entering Purchase order line items or Subcontract line items, it will be usefull to allow grouping of Items. As an example:
GROUND FLOOR
Rough In; Qty = 1; LumpSum; $100,000; Tax Code
Finish; Qty = 1; Lumpsum; $50,000; Tax Code
FIRST FLOOR
Rough In; Qty = 1; LumpSum; $75,000; Tax Code
Finish; Qty = 1; Lumpsum; $40,000; Tax Code