I can't believe how big U.S. houses are. A quick Googling shows they're much larger than the average house in my country:
Average House Size By Country Australia - 214.6 sq m (2310 sq ft), 2.56 people per household (pph) USA - 201.5 (2170), 2.6 pph New Zealand - 196.2 (2112), 2.6 pph Canada - 181 (1950), 2.5 pph Japan - 132 (1420), this year the pph in Tokyo dropped below 2 for the first time (1.99) UK - 76 (818), 2.1 pph
and those are averages, I'm sure median shows a different picture (small flats for Europe and urban Latin America, large houses for suburban U.S. and Australia).
The median for a flat here in Montevideo is about 60 square meters (the one I rent is 55 square meters, and most new ones are even smaller), and the median house is about 100 square meters (and forget about the humungous driveways and stuff the U.S. suburban house has).
http://notbuyinganything.blogspot.com/2012/03/average-house-...
In the US, everyone's driveway is more like something approaching a major civil engineering undertaking, being the size of a tennis court, consuming several cubic metres of concrete, steel reinforcing, etc.