Ana White and her husband did a tiny house build and have free plans. The build was for them to have a place for their family to stay when they were on site building cabins. Because of this, it's on a trailer. Also, the original build doesn't have a bathroom because the places where they are going to park it typically will have some place they can use for bathing and eliminating. However, they do show some videos from other builds (
Wild Rose and
Open Concept) they did which does have bathroom facilities and they have revised plans for the original build (Quartz) with a bathroom.
Original build plans:
http://www.ana-white.com/2016/06/free_plans/quartz-tiny-house-free-tiny-house-plans
Modified plans with bathroom:
http://www.ana-white.com/2016/08/free_plans/free-tiny-house-plans-quartz-model-bathroom
A bunch of things they did for various tiny house builds (space saving/multifunction cabinets and furniture):
http://www.ana-white.com/tiny
https://youtu.be/hkGgs6g1rSo?list=PLLVjGYhU0zQYvtDc4V8m4oV6Jo7GdJmyi
