[smokingfrog]

There is a guy in Luling, TX that builds these using mostly recycled materials. A little too small and pricey if you ask me. But if you had a small piece of property in the country, it might be doable for a weekend place.

http://www.tinytexashouses.com/index.html

[Tijeras_Slim]

83 square feet is barely enough for a decent gunsafe.