Indeed be a smart move however, it's important to consider the opportunity cost as well.

Plenty of companies can do a AML check and you can make that cost as part of your origination process.As a FYI, we had someone fail a AML / KYC check because they were a former drug runner in a cartel.

But if the land investor is worth their salt, there should be enough meat on the bone for you to justify that cost, as we try to sell at 70-80% of market value to keep the velocity of money up.  

For sure investors in their 20 30 40s probably are not thinking about healthcare cost as they age out.. 

ADUs in my market cost a lot more to add hands off than the value added.  

Since you mentioned that you are getting started, I highly suggest you house-hack (this is how I got started in Costa Mesa, Orange County).

What does it cost a family of 4 to go to Disney for a week?   

it doesn't cost a lot to put utilities and parking pads in or even entitle it or to purchase land. it's just a lot of work that no one wants to do. parks are hard to get approved but they are not expensive to develop. it's nothing but utilities and parking pads and an office. harder to finance too, but compared to apartment development or mixed use development it is one of the cheapest and highest performing assets because of reduced construction costs. 

Start writing down the seasonal preventative maintenance you need to do and how much repairs cost.  As

My guess is the S Corp hasn't been kept current...Get a copy of the Trust/will/ whatever you can.These problems can cost a fortune.