The very first Tiny House RVs were built on utility trailers you could buy at the Trailer store in Any Town, USA. They typically came in sizes of 14′ and 18′. Longer sizes did exist but were hard to find. Rarely did the longer sizes have the proper weight rating for a tiny house – and thus the Tiny House Trailer was invented.
There are 3 tiny house trailer styles (not counting a fifth wheel) … and each type will have a HUGE impact on your design.