It seems the days of the McMansion are numbered...

We've detailed 'Small Homes', 'You Say Apartment, I Say Closet', 'A Tiny Apartment Transforms into 24 Rooms' and 'Think Your Place is Small?' and the following CNN video highlights an amazing $500,000 home, built by a Tokyo resident, on land the size of a parking space.

Just how small can a home go?