I lived part-time in a 27-foot Kencraft for two years while attending college 70 miles away. This trailer had been stored under cover for many years and had (yes!) a complete fiberglass roof which extended over front and rear. We paid $2500 for it, and only invested in new carpet, vinyl and curtains. No hardware needed upgrading.
Living there felt very much like being in a tiny house, or a charming tiny cabin. I believe it was a 1959, but memory is now foggy on that. Once when I had it out camping with a group of people (all of whom either had pricey motor homes or ginormous 5th wheels), one of the wives asked me how much it had cost. When I told her I think she was stunned and somewhat jealous (no doubt still making huge payments on her RV). Plus it was vintage adorable and hers was stick-ugly.
The Kencraft had a fine furnace
with thermostat, a good water heater, fridge
, nice shower. It did not gather condensation, I can state with certainty, because I often had spaghetti dinners for fellow starving graduate students. They who were sleeping on flea-infested sofas and struggling to get through school were happy to cozy up of an evening with food and drink and conversation. It was delightful.
I can't imagine *quite* living in my 13.5' Lil Bigfoot
without a shower and the wonderful storage the Kencraft had. But I can imagine living in a 17 or 19' FG something with a few amenities quite happily.
One significant difference between living in an RV in someone's back yard and living in a tiny house might be that some judgmental types (and neighborhood associations) might consider the RV in the back yard a low-rent or *white trash* situation, while the tiny house is still looked at as green and clever.