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Carzonia Apartments - Improvised housing made from old streetcars after the 1906 earthquake
(ani.social)
From an article on these: https://www.outsidelands.org/carzonia.php
I mean, I'm more surprised they bothered with the foundation at all really. It's not like they couldn't have slapped it on the ground with some wheel chocks and called it a day. In fact, I know of people in the 21st century doing that with old W-class trams here in Victoria.