How to find and vet property managers

[Zackarias Aitchison]

Hey! 

I am a pretty experienced Canadian investor looking to invest in the United States with buy-and-hold properties in TX, ND, SD, NE, TN, WY, and LA. I was wondering what tips you guys have for finding quality property managers without meeting them in person. What characteristics of a property manager you should look for, as well as what to avoid. 

Thanks in advance for the advice, cheers!