23 year old modular home, correct lift off foundation, correct no crane is used, jacks are used to raise it. build another floor, correct First floor will have garage and den w/bathroom second floor will be original floor of house.
Industrious yes, can it be done, yes. I had a house previously where I did that.
I still want to solve the water problem. I do not want to haave trouble with water downstairs, be it a basement or crawl space.
French drains, new gutters & downspouts and insulation should make a neat dry environment. What are your suggestions?