After looking at this thing again, it isn't an RV. It's a huge camper that has the hitch up on a block of wood and plastic wedges in front of the tires. There is no hose or electric line going from the house to the trailer. I determined that after walking the dog passed it. The windows are open. They have a truck parked in front of it with a roofing sign on the side. Maybe they move it to different sights when they have roofing jobs. With so many neighbors parked on the street especially on weekends, it's just a mess.
I'm not a nasty neighbor. I won't turn them in for now, but if it is there for three weeks or so, I might talk to them. I'll never know when they are outside because I can't see their house! They are renting it. We all get along on our street and even have get-togethers. I'd like to include them in the future. Maybe the mailman will take care of it. It's parked too close to the mailbox so he may get tired of having to get out of the truck to give them their mail.