My daughter and I embarked on a tiny house build a little over 4 years ago. The plan then was for her to use it to live in while finishing college, then I'd put it on land somewhere as a get-away so it is built to be off-grid ready. All it would need is solar panels added (It's pre-wired for roof-top application) and rain gutters for water catchment. But of course things have changed. My daughter decided to take a sweet deal from a college for a Doctorate program where they are actually paying her to get her masters and doctorate. So she is still living in it, and has no plans to give it up anytime soon.
Anyway, for those who are interested, here is an article on the build by Tiny House Talk: https://tinyhousetalk.com/hannahs-tiny-house-a-father-daughter-project/ There is a link at the bottom of the article to a facebook photo album detailing the build from a wrecked TT to the finished product.