> While the cost of housing is climbing in many global cities, the average middle-class family in Tokyo can still afford to buy a new, single-family detached home for $300,000. That’s right. The typical Tokyo starter home is a brand new three-bedroom.
Their national zoning rules allow supply to meet demand without city-level meddling. Houses there sell for roughly the cost of construction.
The reason housing is so nuts in SF is because the city added half as many new houses as required to meet demand over the last say 30 years. [2]
[1] https://archive.curbed.com/2017/2/3/14496248/tokyo-real-esta...
[2] https://en.wikipedia.org/wiki/San_Francisco_housing_shortage