Iโm building a house on 5 acres in the mountains and stay in my toyhauler 2-3 nights a week when Iโm there.
As someone mentioned, the insulation in most RVs is horrible. I keep the heater off at night as it wakes me up cycling all night when itโs cold.
Iโm fortunate to have another house and wouldnโt want to have to live in an RV in a cold environment.
Since you wonโt be using it to travel and are mechanically able and if the owners agree, this is want I would do.
(Youโre probably looking at 10-12โ wide and 30โ long for a 5th wheel. )
For $24k you could build a simple 12x24 cabin on 4x6โ skids (non permanent) with 2x6 walls and gable roof. Insulation would be Way better and since you have the utilities close you can wire and plumb it like a normal house.
The inside can be finished to your desire and costs would depend on how nice you want it. Install a small wood burning stove and that would easily heat it on a few pieces of wood per day.
After 3 yrs you could maybe sell it to the land owners, sell to private party or move it to a new location.
I guarantee after 3 yrs of fulltime living your RV will lose much of its value and the cabin will probably be worth more than cost of materials, probably make money if you do all the work.
Also, if zoning may be an issue the land owners could just say itโs a storage shed.
Hope this helps, just something to consider.
13Jeep Wrangler
07 Ragen 21FB
12 Yamaha Super Tenere
14 Suzuki DR 650