Square footage of a house (GLA)
For most people, the gross floor area or gross living area (GLA) of a home is what they’re thinking when they hear “square footage.” Here’s how to calculate your square footage:-
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Sketch a floor plan of the home’s interior.
Draw each floor separately, and don’t include unfinished areas, patios, porches and exterior staircases. -
Break down the house into measurable rectangles.
The more rectangles the better. This takes the guesswork out of rooms or hallways that don’t have perfectly flush walls. -
Measure the length and width of each rectangle.
Round your measurements off to the nearest 0.5 linear foot. -
Calculate the area of each section.
Multiply the rectangle’s length by its width to get the area in square feet. Write this number down in the corresponding space on your sketch. -
Add up the total area.
Sum up the square feet of each rectangle to measure the total square footage of the house. Round the total off to the nearest square foot.
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