Every state I have been in will do a lost title for a fee, but you have to be the LEGAL OWNER, in other words the title has to have been in your name before being lost. Some states allow salvage titles for vehicles over a certain age. I have built several trailers, and in WV they can be titled as ASM (assembled). the requirement for that here are a material list, including cost and a certification by a LEO that it is built and has never been titled. Be hard to do that with a camper, although I have seen several home built campers. I still lthink you should check with your local LEO.