Just how large a house really is may depend on whom you ask, The Wall Street Journal reports. That’s because appraisers, developers, builders, real estate professionals, tax assessors, and architects all measure spaces differently. No universal standard exists for calculating a home’s square footage. Further, it can also vary regionally.
For example, some calculate space on only the interior dimensions of finished living spaces. Some industry insiders may count the garage or finished basement in the square footage; others may not. Whether to count the square footage of balconies, basements, garages, or even wall thickness can vary too.