Usable Floor Area Calculation

Calculate the area of each story floor of the building typically measured between the exterior walls.

Usable floor area calculation. First find out how much total floor area a building has. 1989 fully enclosed space that is available for the exclusive use of a building occupant for personnel materials furniture fixtures and equipment. In both methods calculating the rentable area requires multiplying the total floor area by a ratio that represents the tenant s portion of the floor. Gross floor area is the sum of the floor area of each.

Discussion about selecting the correct method for calculating rentable area is beyond the scope of this article. Then divide the total floor space by the usf to get the load factor. Those portions of each story above the ground surface prior to any manipulation or grading are usually included in the calculation. It is a tool used by the planning body of any city or town to identify densely constructed areas from the others.

Commercial office floor area calculation methods. In this article wealthhow tells you how to calculate floor area ratio and equips you with a calculator for the same purpose. The floor area ratio is the relationship between the total amount of usable floor area that a building has or has been permitted to have and the total area of the lot on which the building stands. There are no exclusions for columns recessed entries or the like either column space is fair game in the calculation of total usable square feet.

Usable square feet includes the specific area the tenant will occupy in order to do business. Determine the gross floor area of the building. Then subtract the shared square footage to determine the usable square footage. Adding to this confusion is the practice among some developers to use gross leasable area gla and gfa interchangeably or to use.

The owner or owner s agent should be able to give you these numbers. For a partial floor lease this includes all office space plus any storage or private restrooms. Gross floor area gfa in real estate is the total floor area inside the building envelope including the external walls and excluding the roof. Best practice 1 what boma standard should be used for measuring the floor area of an office building that belongs entirely to one single occupant also applicable to ansi boma z65 1 2010 boma best practice 7 does boma international certify that an individual company or system can perform boma calculations if not how can boma floor area measurements and calculations be certified.

The total of all the usable areas for a floor shall equal floor usable area of that same floor. The difference between the two methods is in the way the ratio is calculated. Calculating the load factor is pretty straightforward.