There were several things posted in this thread, that didn't make sense to me. (for example, how parking a camper on an undeveloped property, that you don't own, isn't trespassing and how it makes it "developed"; how renting is a waste of money, because your paying for someone else to maintain the place, instead of having the needed savings to hire want you can't do, or don't want to for yourself, etc).

But two things did stick out to me that made me wonder:
Your dad planted "many valuable trees" and "need to sell" are two that come to mind.
"old basement" is another.

What is the basement under? Does it have plumbing/electricity already? What is the value of the tree's and are they ready for selling/harvesting?