When Martin and I were considering buying a house, we looked at a few out in the Fonda Island Briggs Lake area. While Livingston County doesn't have any bad areas, like the mean streets of Fowlerville, oh look out, this area is definitely one of the more downscales ones, aesthetically.
There is a collection of tiny houses near Island Lake that can't be more than 400 square feet. These are actual year round houses that someone must live in, as they are inhabited. This one happens to be one of the larger ones.
I don't imagine they are models of efficiency like Tumbleweed Tiny Homes are, either.