This proved so successful that she decided to build another, this time an off-grid vacation home near the town of Volcano in Hawaii. The recently-completed treehouse cost around US$11,000 and took three months to build. Including travel costs, the purchase of land, and all additional expenses, the whole project came in at just $23,000.

Located on a 2,000 sq m (0.5 acre) plot of dense rainforest near Volcano National Park, the treehouse is raised 4.5 m (15 ft) off the ground on stilts and comprises a total usable floorspace of roughly 21 sq m (230 sq ft). This is split between just three areas: a large bedroom, a small bathroom with a toilet and shower, and a "kitchen area" that's really more of a nook in a hallway and doesn't yet contain a hob or sink. In the space underneath the home proper, an old trampoline has been converted into a hanging daybed.

Each room looks finished to an impressive standard, especially considering the budget Wolfe had to work with.