Scaling - How to Successfully Obtain Multiple Mortgages?

[Jeffrey S.]

I apologize if there is already a similar post regarding this topic. I did a cursory search and did not see anything on point. I am wondering how investors obtain multiple mortgages for all of their properties (i.e. 50 to 100 or more). Do banks, credit unions, or the like balk when they realize you already have 50 or more mortgages on other properties? Or is this where a 1031 exchange is used to sell some properties for ones with more units (i.e. apartment buildings)? I realize these may be 2 separate questions and I apologize for that. Any help is appreciated. Thank you.