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.

Utility Trailer

A good tiny house utility trailer will feature the floor framing inside the trailer. This allows you to saving you an extra 3 1/2″ of headroom! Building between the wheel wells, the Utility Trailer design allows for exterior eaves that will extend to the maximum legal width of 8’6.” Eaves are gorgeous aesthetically, but they also protect your siding from rain and snow damage. On the flip side, your interior is smaller as a result.

A dual-axle flatbed trailer with a metal frame and striped platform, perfect for transporting goods or equipment, whether you're moving tumbleweed or hauling parts for your tiny house project.
Diagram of a utility trailer showing dimensions, ideal for a Tiny House build. Width: 8'6", height to apex: 14'11", interior width: 6'8". Roof eave width: 5¾" each side. All measurements approximate. Max width allowed by DoT.

Deck Over Trailer

The Deck Over Trailer is the ideal trailer for single-story Tiny House RV designs. The Deck Over has maximized trailer width by building over the wheel wells. Another advantage is you maximize the width and don’t have the wheels sticking into your tiny house.

A two-axle flatbed trailer frame viewed from an angle, featuring a black metal structure with crossbars and a tow hitch at the front—perfect for supporting your tiny house on wheels or even a charming Tumbleweed model.
Diagram showing the dimensions of a trailer designed for a Tumbleweed Tiny House, featuring an interior build space of 7'7" and an overall height of 11'6 1/2". Side walls are 4" thick with metal siding. The maximum width allowed is 8'6".

“Tiny House” Trailer

Nowadays almost all Tiny House Trailers are designed to maximize house width and height. This is don by building the trailer frame as wide as possible. The wheels will stick up into your tiny house. Most people are willing to sacrifice a little bit of aesthetic pleasantries for extra space.

A black and silver flatbed trailer with a dual axle design, perfect for a Tiny House. The trailer has metal slats and two black wheel protectors.
Diagram of a Tumbleweed tiny house on wheels with dimensions. The maximum width allowed by the Department of Transportation is 8'6". Interior build space width is 7'7", with walls having lap siding.