Home / boat plans & kits catalog / houseboats: houseboats. this category includes houseboats and pontoon boats from 16' to 45' that you can build. building your own is easier than you may think. about our plans & kits. 12'-28' huck finn - trailerable pontoons :. All these free boat plans can be built by anyone with a modicum of common sense and a few basic woodworking skills and tools. however, if you haven't got the skills and tools yet, this is a great way to acquire them.. Find and save ideas about small houseboats on pinterest..