Size: 196 sq. ft.

Location: Boise, Idaho

Boise architect Macy Miller decided to downgrade from a full-size home to a tiny one, which she designed and built herself. She lives there with her partner and dog.

The home, which sits on top of a flatbed trailer, cost about $11,500 all in. The most expensive component is the composting toilet — about $2,000 — which uses barely any water.