We have tiny homes all over the place...they are called "APARTMENTS" and it's way more environmentally friendly to build and construct these than joe blow slapping together some piece of DIY crap that will be left in the forest to rot.  It's the most efficient way to deliver municipal services and if well constructed a building should last for 60 to 70 years.

Live off the grid?  So don't contribute to property tax for things like police, rec centres, roads.....get real.