It also helps that Japan has a culture of tearing down "used" houses after 15 or so years, and rebuilding them [1]. This means that neighborhoods are constantly being reconstructed to meet the needs of the current population.<p>That attitude seems to clash pretty dramatically with those of San Franciscans or Londoners, who prefer to maintain the heritage and culture of a neighborhood.<p>[1] <a href="https://www.theguardian.com/sustainable-business/disposable-homes-japan-environment-lifespan-sustainability" rel="nofollow">https://www.theguardian.com/sustainable-business/disposable-...</a>