How a condo is measured

After questions arose over how square footage is measured at the Beacon, Damion Matthews of SFCondo.org went out and had an appraiser put in in simple terms... And as his appraiser says, it's likely the uproar is the result of the difference between the architect's measurements and the appraiser's measurements and how each are (legitimately) performed.

How a Condo is Measured [SFCondo.org]
Luxury condo complex spawns lawsuit [SFHomeBlog]