accurate square footage - measure before you buy

[Lynn Z]

I've just discovered that the house I'm buying has a great deal less square footage and the county figures copied in the listing agreement include non heated square footage. Why do realtors not measure anymore? Do they want to fluff the figures? Any idiot knows the county can't measure houses from the inside and are guessing at best at what's heated or unheated. What's the big deal? Then they have that + or - 10% accuracy deal as well.
Let the buyers beware.