Patent ID: 7941381

Claim:
A system for calculating a rentable space required for a tenant in a building comprising: a. memory storage having software which permits a user to input areas of rooms required by the tenant, a building single tenant loss factor, a building multi-tenant loss factor, a landlord's stated rentable square feet for a space in the building and data relating to losses in actual usable space in the building; b. a processor in communication with the memory storage and using the software to: i) calculate a circulation loss for each of the rooms by; A. for a room having an area greater than or equal to a user specified area size, calculating a corresponding circulation loss using a user specified aisle width and the area of the room; B. for a room having an area less than the user specified area size, calculating a corresponding circulation loss using a user specified number of individual workstations for a workstation cluster, the user specified aisle width and the area of the room; ii) add a total of the room areas and the circulation losses to determine a usable space required by the tenant; iii) calculate an inefficiency factor for the building based on the data relating to losses in actual usable space in the building by; A. calculating an inaccurate measurement loss using a difference between the landlord's stated rentable square feet for a space in the building and a rentable square feet for the space in the building calculated using standards; B. calculating a column loss using areas of columns encumbering the space in the building if a column is present in the space of the building; C. calculating an unusual building shape loss if a side of the building is not flat or is at an angle other than approximately 90° with respect to an adjacent wall; D. calculating a window line encumbrance loss using a perimeter of the building if an encumbrance is positioned at the perimeter in the space of the building; E. calculating an unusual loss that does not fit into steps A. through D. if such an unusual loss is present in the space of the building; F. adding the losses of steps A. through E.; G. dividing the added losses of step F. by the landlord's stated rentable square footage for a space in the building to calculate a net inefficiency; H. calculating the inefficiency factor based on the net inefficiency and the building single tenant loss factor or the building multi-tenant loss factor; iv) multiply the usable space by the inefficiency factor to obtain a building efficiency loss; v) add the building efficiency loss to the usable space to obtain the rentable space required for the tenant in the building; c. a display in communication with the memory and the processor, said display presenting to a user the rentable space required for the tenant in the building.