Square Footage
Definition and meaning of Square Footage in real estate.
Square footage is the measurement of the total livable area within a home or building, expressed in square feet. It is one of the most critical factors used by buyers, sellers, appraisers, and lenders to determine a property's market value.
In more detail
To calculate this figure, appraisers measure the exterior dimensions of the home and sum the area of the heated, finished, and finished-grade spaces. Unfinished areas such as basements, garages, porches, and attics are generally excluded from the official livable square footage, though they still add value.
Real estate agents use this metric to calculate the price per square foot, allowing for easy comparison between similar properties. Since standards for measuring can vary slightly by region, buyers should verify the exact calculation before closing.
Key facts
| Category | Buying & Selling |
|---|---|
| Excludes | Garages, unfinished basements, and open porches |
| Primary use | Determining property valuation and comparing home prices |
| Measured by | Taking external dimensions of heated, livable areas |
A real estate agent lists a home with its total heated living area, excluding the unfinished basement and the attached double garage from the official square footage.
Frequently asked questions
Does an unfinished basement count toward square footage?
In most real estate markets, unfinished basements do not count toward the official livable square footage, but they are noted separately on the listing.
Why do different sources list different square footage for the same house?
Differences can occur because tax assessors, appraisers, and builders may use slightly different measurement standards or include different areas.