I actually just came across this article from Real Estate Crowdfunding Platform Patch of Land about how tiny homes are going to be very innovative and popular: https://patchofland.com/blog/growing-communities/2015/01/28/innovation-online-residential-real-estate-investing-patch-of-land/. In terms of the funding, Patch of Land focused on the debt side of the equation and usually focuses on fix / flips. You might be better off trying to raise equity for this type of construction through real estate crowdfunding avenues. Have you looking into those avenues for your funding?