Again, this is pretty silly. If an agent led me into a bait-and-switch situation (ie, something advertised as 1400 rsf turns out to be a closet), I'd simply never use them again.

In practice, though, total moot point: the last time I looked for office space (earlier this year), the first agent I called sent me scaled floor plans for over 100 places. There were rsf numbers to go with them, but the dimensions of every office were right there.