A Harvard grad invented these $139,000 stackable homes that can be built in under three weeks

Jeff Wilson spent one of his two years as dean of Huston-Tillotson University in Texas living in a dumpster.

The experience made him embrace minimalist living, and inspired him to launch a tiny housing startup, called Kasita, in 2015.

"While the experiment was extreme, the experience I gained by living small and simple made a big impression," Wilson says. "At the end of the year, I left the dumpster with the concept for a new category of housing - a beautiful, small footprint home designed as a solution for the growing housing crisis."

Based in Austin, Texas, Kasita offers housing units that can sit by themselves or stack to form apartments. The pre-fabricated homes can be assembled off-site and delivered in two to three weeks, Wilson says.

The startup is now selling its first units, which measure 352 square feet and cost $139,000, across the US. There is currently a waitlist for preorders - $1,000 holds a spot.

Keep scrolling to check out the units, which will likely be ready for delivery in June 2017.