For the past seven years, Hong Kong has held the title of the world's priciest city for homebuyers, according to the Demographia International Housing Affordability Survey.

James Law, a Hong Kong-based architect, thinks his micro-homes could help alleviate the city's housing crisis. But his tiny-home designs are anything but typical — they are concrete water pipes outfitted with all the amenities of a modern home.

Law explains more about his "tube home" design below.