Don't forget higher cost to heat/cool.
Higher taxes(bigger houses are usually valued higher).

I wish I would have bought a smaller house, 2400 sq/ft is a lot for 3 people. The game room which was supposed to be a home theater by now sits empty with a few odds and ends scattered about. Oh well it was a "starter" home as they say. I know exactly what to get the next time around.

M80ti's, VP150, QS8's