Should I pay off some mortgage loans?

[Ann Lor]

I have a few rental properties with loans. I plan to keep them for a long while due to the location. I have some extra cash that I can pay down the loan. The loans are all at the same interest rate, how do you know when to pay down loan or hold on to the cash just in case?

[Justin Phillips]

@Ann Lor At the end of the day, the paydown vs. keep cash decision is personal and depends on your risk tolerance. 
My wife and I like to grow while keeping debt and leverage in check. We have a very specialized loan on our rental, it's a line of credit tied to a zero balance sweep account. So we're able to park idle funds and deposits on our remaining balance, saving interest cost. We retain access to that money 24/7, so it just feels like doing our regular banking. The deposits/idle funds work for us, rather than BoA or Well Fargo. 
You could pay down your balance to $0, but still have access to those funds at any time for emergencies or future investment opportunities as they become more common when the market turns. 
It's been a great tool for us, allowing us to make prudent financial decisions, while sleeping well at night.