http://www.koreaherald.com/view.php?ud=20171119000242
[..] Purchasing a residence in Seoul is now roughly on the same playing field as New York City, where the median price is about 443.4 million won. However, because average income levels in both the United States and Japan surpass Korea, the report states Koreans take on average three to five more years to purchase a house over those in New York or Tokyo.
According to the data, it takes the people of New York an average 5.7 years to purchase a home, followed by 4.8 years for Singaporeans and 4.7 years for Tokyo residents. As for Seoulites, those with an average income of 47.28 million won require some 9.2 years to purchase a home. [..]
How is their population density creating ‘affordable housing’ as you claim?
Re Tokyo: the birth rate is on the decline and in the country side they re giving away homes for free to repopulate it. The public transport is excellent. None of these parameters apply to San Francisco Bay Area.