I used the values from the realtor.com website for purchase information and expenses, and the bank of america calculator to estimate closing costs.

If it is section 8, i would make sure they at least have some income coming in to be able to afford to eat, clothe, and buy all the other necessities. 

@Joshua G Steed I have yet to buy a mobile home at auction but have heard about them.

https://www.propertana.ai/Are you offering this information because you have used the platform and found it helpful OR do you have a financial or other interest in the company providing the platform?  

Quote from @Shenell Caldeira: How do I reach the owner if itʻs only showing the bank on the tax information?

Money order is an added protection for the tenant because when the payment platform is hacked and everybody’s information is stolen, the tenant’s information won’t be there and therefore cannot get stolen.Look at the agreement documents the platform forces you/tenant to sign.

I'm thinking about buying a laundry mat, but have no idea where to start. 

Wait patiently for the tenant to buy real estate, then record the judgment in the county where the property is located in order to obtain your lien -- the balance of which has been accruing interest nicely in the interim.Anything else is a waste of resources.

When did you buy it?

You can also sometimes call utility companies and get relevant information.