Space Calculator
Please use our space planning tool to help you determine your size requirements.
The usable square footage you need will vary between buildings depending upon such factors as column spacing, floor-plate configuration and window placement. Your rentable square footage will vary depending upon the differing loss factors between buildings.
*Circulation is the space needed for hallways, around files, between workstations etc. (Generally about 16% - 20% of your total usable space.) We use 18% which works out to 22% of the total functional space.
**Add-On factor is the inverse of the loss factor. In theory, the loss factor represents that space which the tenant benefits from, but does not occupy: common area hallways, the building lobby, fire stairs, elevator shafts, mechanical rooms, etc. In practice, the loss factor is a profit center for the landlord and it often goes up in tight markets!
Loss factors vary between buildings and are generally higher on multi-tenanted floors.
We use a current market loss factor of 25% of the total rentable space which works out to an add-on of 33% of the total usable space.