As one to lose your virginity on, it looks fairly OK.My first house was one much like this - I got it under contract for $32,000, realized during inspection that the basement was collapsing (we rarely see basements here in Texas because of shifting soils), and got the bank to lower the price to $22K.

Soil testing to make sure contaminates are not being introduced into the ground and thus the ground water has to be done if DEC gets involved.

I have moved some heavy furniture by putting cardboard underneath and then sliding the furniture on the carpet or floor.  

Every house in Kansas City that has wood siding, or a wood deck, or wood beams or any other piece of wood that comes into contact with the soil will eventually be visited by termites.  

Similar type of property, a German old couple who I think were more savvy then they let on, the place on the surface had all this interesting wood work and history that they kept emphasizing, while trying to ignore and deflect all the problems underneath.

So at this point how do I protect myself from him selling to someone else under neath me ?

Most importantly I believe it will give me control over my financial status for the rest of my life, and prevent me from having to depend on 40hr work weeks just to get by.At this moment I am currently mostly looking into investing in owner occupant multifamily homes, as I am still fairly young and believe this will give me good investing and life experience(also out from underneath my parents roof lol). 

Soil & sidewalk pitched toward building.

They all also have separate LLC's underneath my Holding Company LLC.

This equates to a high level LLC considered a management company, and then underneath that the land of the MHP would be a subsidiary, and a separate subsidiary would be used for the Park Owned Homes for renting, selling, etc.