I am planning on building a RMH it the rental I'm in...lol just because I want to build one. I heat with wood and have a fireplace I bought at an auction but the house is bad enough that the landlord doesent care what I do in it. I get my rent for the price of an RV space because when I moved there it was just a yard spigot and a septic tank with a completely uninhabitable house. I fixed windows put in a fireplace and COMPLETELY replumed everything from the water main into the house.i have a propane heater but burned less than a five gallon tank in 2 winters. I have power but had to have an electrician replace the breaker box first...
We had a house like that here. It was my late-grandmother's and found a person to just live in the place free if she would fix it up. She started too, but got busy, so it never worked out. Last year we fixed it up and moved into it. Some people we knew said they wanted to rent our big house out which is across the street, but later changed their mind. We tried to sell the big house, but when that fell through on 4 offers, and 2 rentals, we finally just moved back in.
We have had some people ask about our other home, but it needs to be fixed up more before we would let anyone stay there. It is kind of funny, I will move my own family into the place, but feel horrible about having someone else stay there! It is actually liability, but still kind of funny.
The only thing about building a RMH is the dimensions in the core They must be spot on for your rocket to roar.
Otherwise is easy easy. Fire clay , regular clay, sand and some fire bricks. Some pipe for your mass and out thru the roof. Done deal.
Welcome to rocket science ! A rare experience!