It is still in early stages, but the idea is that if you use readily available basic cheap diy materials and avoid fancy-priced sea-going marine fittings It is possible to build a simple solar powered floating home with electric drive and basic home utilities, suitable for use on inland lakes and canals.
The design is modular, so that a small home can be dis-assembled and transported in a standard Ford transit van. You will probably find it by searching for ayb houseboat.
It employs some modern materials and techniques unseen elsewhere on boats.
There is currently a DIY manual and various Kits and components to supplement your local supplier.
Top of the range built and delivered is under £15000 while a complete kit is less than £5000.