If you asked most people, they would say a tiny house has a similar size to an RV travel trailer. These homes are often built on flatbed trailers and are sometimes custom built. Their square footage usually does not surpass 400 square feet.  Small cabins, cottages, and other residences can also be considered tiny homes if subjectively under 800 square feet. While the term tiny house is not as much an exclusive definition, it is a broad, inclusive category for extremely small residences.