How do you gather the information to determine whether a property will cash flow?

[Corey Demuth]

How do you find out things like what rent you will be able to charge for a unit, what kind of amenities the locals need/want, what your maintenance costs will be, etc?

I am trying to crunch the numbers on a few properties but I realized I don't know where to gather a lot of the required info.

Also, can you use an fha loan to buy a multifamily home to live in and also rent out the other part of the house?

Thanks!