Hi Alphonso,
I just bought my first MHP a few weeks ago and I can tell you some of the things I considered.
1. Check if in flood plain
2. Ensure licensed for the proper # of lots. Usually through state board of health.
3. Check if all back taxes are paid
4. Get title insurance, when my property was being reviewed, 2 liens were found and needed to be resolved
5. Verify rent roll records for on time payment.
6. Get as much info as possible on utilities. (water and sewer source)
7. Are any trees in position to damage an homes from falling limbs?
I focused my due diligence on potential liability and future capital expenses. Also ensure you evaluate the value of the park for the lot spaces and then add the park homes on top.
I bought my park in a small town a few hours away that I don't know very well, so I met with city officials, the police chief, and a local mobile home park dealer to get their input.
Hope this helps,
Rob