I think it's really impressive that they were able to build a house like that for only 20K. The article mentions zoning laws and size requirements, which I found odd. Do many places not allow houses below a certain size to be built?
It's extremely common in the US.
Do people want those kinds of laws in order to protect their "investment"? I mean, I guess maybe your house will be worth more if all the other houses nearby are large and thus expensive?
Of course, now in the digital age, I guess such laws seem sillier than they did earlier. You no longer need a huge amount of books, music records, train set, pinball machines, billiard table etc., since you can fit all those things in a small computer.