Micro apartments are spreading from their traditional birthplaces in Asia's packed urban centres to major cities in the West, where popularity density is on the rise and floor space commands an increasing premium.

Ultra-small residential apartments are far from a new phenomenon when it comes to the modern city. They have been common in Japan and Hong Kong since the 1970s due to the incredibly high population density of these urban environments. As populations rise and rents in surge in the major cities of the…