[jbarham]

Re: architecture in Japan the typical lifespan of a house is less than 30 years: https://robbreport.com/shelter/home-design/japanese-homes-ar...

I'd recommend the book Jutaku by Naomi Pollock to get a sense of how uniquely innovative Japanese housing architecture is. Ironically a major reason is tax depreciation rules for houses which encourage homeowners to demolish and rebuild rather than renovate.