Tiny houses on wheels do not currently fit in our national or BC Building Code. There is a provision in Appendix Q of the International Code Council (ICC) with an official definition of a tiny house, which defines it as “A dwelling that is 400 square feet (37m2) or less in floor area excluding lofts”. Appendix Q only applies to tiny houses on a foundation, and not moveable tiny homes– however, so what about tiny houses on wheels?
There are CSA standards that apply to tiny homes: CSA Z240 MH Series, CSA Z240 RV Series and CSA Z241 Park Model Trailer. What does this mean? You can build your tiny house or have it built to one of these guidelines to demonstrate that the unit complies to a recognized standard. It doesn’t give you any guarantee that you can park it in a municipality or avoid rezoning. Each city has its own bylaws and regulations, and you may also need to pass the deformation-resistance text provided in CSA Z240.2.1.
There are groups working on making tiny houses legal (as building structures, ie including them in Building Codes) and advocating for places to park them. Tiny Home Alliance of Canada is doing great work bringing together the efforts across Canada. The BC Tiny House Collective is also doing great work, and nearly every province has a group pushing for tiny home inclusion under the affordable housing umbrella.