A self-contained RV is one that is set up to accommodate all functions of living (sleeping, eating, cooking, and sanitation) inside the RV. This means it has to be designed and built for human habitation and contain facilities for safe food storage, cooking, eating, sleeping and washing so that all functions of living can happen while inside the RV. The bed or fold-out couch/table that converts to a bed must be built-in (not a mattress on the floor). There must be ventilation, lighting, and built-in cabinets to properly secure items during transit.
Your RV must have an interior toilet. Porta-potties that remain inside the vehicle at all times are acceptable but must be dumped off-site at an appropriate facility. You must have a sink that is installed and the drain connected by plumbing to a grey water holding tank. A removable greywater tank is acceptable but it must be secured in place and have a watertight seal between the tank and pipe or hose connecting it to the sink. See examples at the bottom of this article of acceptable and unacceptable gray water storage.
Homemade or custom conversions are acceptable but must still meet the requirement of being self-contained. Buses, cargo vans, and box trailers can be converted but we will NOT accept tents, mini-vans, cars, SUVs, or pick-up trucks (RV truck campers are fine as long as they are fully self-contained). Minivans, cars, and SUVs are not allowed even if they are self-contained.
Here are photo examples of what is and is not acceptable:
Acceptable sink installations
Unacceptable sink installations