Caleb says: "I blogged almost every detail of building a small green tiny-ish house to rent out in our backyard where our garage once was. It even includes a public Google spreadsheet of our costs."
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects