Pro-Forma vs documentation

[Jillian S.]

Hey everyone! I'm somewhat new to investing...I've had rental properties before, although usually I've lived in them, move, and turn it into a rental.  Now, however, I'm researching actually investing in a multi-family unit.  My question is when do you actually ask for documentation of expenses vs pro-forma?  Do you wait to get those actual numbers after the property is under contract or while still researching? I'm having a hard time getting that information while just browsing...even when working with an agent. Any advice? Thanks in advance.