Housing prices have been more or less flat in Tokyo for 30 years.
https://marketurbanismreport.com/tokyos-affordable-housing-s...
> According to the website RealEstate.co.jp, average housing prices throughout Greater Tokyo have actually decreased since 2006. In 2014, the average price of second-hand condos was 27,890,000 yen, or about $232,914. This is above the U.S. median of $187,000, but is a steal when considering that average housing prices in many destination U.S. cities are triple or quadruple this amount.