With the investors and investments that I look at, the very first thing I ever do is get information from the listing agent. I want to know the following:
Current rents, copies of the leases, owner paid utility costs, property taxes, and insurance costs. These are the big ones. I then run those numbers through a tracker I use to calculate cash on cash returns, cap rate, and monthly cash flow.
If the numbers work, then I take the next step in going to look at the property. What you will find by skipping the initial analyzation phase of the deal prior to looking at the property is...sometimes the property will be in amazing shape and you fall in love with it. This can create buyer blinders. Meaning you are blind to the numbers or you compromise certain things to justify the purchase.
If current property is vacant, I run potential rent numbers through to see if they check out. I will also often connect with my property manager in that area to make sure he/she thinks they can rent the units out for that much.
Once this all checks out, I then take the next steps in setting up a potential offer.
Hope this information is helpful