Was just curious, when doing analysis on a potential property, and especially one that needs rehab/improvements/repair, how do you generally come up with the numbers? Do you call several contractors, give them the property address/details/pictures/listing info, and then ask them for ballpark estimates? Or do you just kind of "guess" off the top of your heads? I can see how the latter would make sense if you've done this sort of thing already, but if you're new and haven't had much experience, do you do the former? Or something else?