[chrshawkes]

I feel my 3300 sq ft house for me, 2 kids and a dog is reasonable. Even townhouses these days are huge. I consider McMansions to be excess of 4000 sq ft.

[jjeaff]

3300 is above average. For what it's worth, wikipedia says more than 3,000 sq ft and has a citation. https://en.wikipedia.org/wiki/McMansion

But there are other criteria as well.