Need more info to determine if it is a good deal or not.
What are the numbers?
Is there an underlying loan?
What is he selling them for?
What are the payments?
Does it include taxes and insurance?
What are the properties really worth today?
What are they rented for now or recently? What’s the spread between your in and out payment?
Could the rents be higher?
What are the terms of the land contract?
Is there a balloon? When?
What is the interest rate? is it fixed?
After a certain # of on time payments, will he/she convert to a DEED?
Is there deferred maintenance? What?
How old is the roof?
How old is the HVAC system?
Age of homes?
There is a lot more that goes in to determining if you are buying the right house right.