How to Calculate Gross Floor Area

Tape measure
••• tape measure image by Alison Bowden from Fotolia.com

Things You'll Need

  • Tape measure
  • Calculator

Gross floor area is the total amount of floor space in a building, usually one used for business. It is important to know the gross floor area for many reasons, such as acquiring building permits, determining rent and advertising with real estate companies. You can calculate gross floor area by performing some basic measurements and mathematical operations.

    Measure the length and width of the inside of the building's walls.

    Multiply the length and width measurements in order to find the square footage.

    Multiply the square footage times the number of floors in the building.

    Subtract the square footage of any elevator shafts, lobbies (other than on the first floor), or rooms that house only equipment used for the building's operation. The result is the gross floor area.

    Tips

    • Check with local ordinances before determining the gross floor area of a certain building. Some local governments do include items such as stairwells or atrium, while others do not.

Related Articles

How to Determine Square Feet Area
How to Find the Area of Squares
How to Calculate the Speed of an Elevator
How to Calculate Square Foot of a Box
How to Calculate Area From Width & Length
What is the Identity Property of Multiplication?
How to Calculate a Shock Load
How to Calculate KVA to MVA
How to Calculate Dollars Per Square Foot
How to Calculate the Total Area of a Trench
How to Calculate Perimeter and Area Ratio
How to Make a Simple Theodolite
How to Calculate the Acreage of a Triangle
How to calculate the area of a square or rectangle
How to Find the Volume of a Sphere in Terms of Pi
How to Find the Height of a Rectangular Pyramid
How to Calculate the Volume of Water to Fill a Rectangular...
How to Find the Total Surface Area of a Closed Cylinder
How to Convert Yards to Feet
How to Find the Volume of a Triangular Pyramid