You can also check their reviews online at Google, Facebook, or Yelp.

Here's a list of things to track:- Formal lease application- Formal signed and executed lease specific to your state- Payment history (I recommend using online rent collection like Apartments.com, RentRedi, etc)- Maintenance requests and receipts- Accounting for all rental-related expenses (repairs, utilities, etc) The more you treat it like a business, the more helpful you are to your CPA come tax time. 

Check out other online guides available here: https://www.biggerpockets.com/guides3.

My recommendation would be to get approved as a Landlord, contact the director's office and request that an inspection be completed before a tenant is selected (sometimes they will do this as long as you select a tenant within 14 days - which you want anyways), and have an online application and screening resource in place.  

If you do not find success there, there are some online companies like SpaceJoy, Decorilla, Havenly etc.

I was seeing information online that suggested both routes...Thanks in advance for the help!

Call a different number you found online associated with the same company, etc. 

Quote from @Zach Howard: Quote from @Jonathan Greene: If you are looking at properties in the US only on Zillow, and not seeing them in person (I know you are in Hong Kong), this is just an effort in futility because you can't underwrite single-family or small multifamily deals only online.

I attend one in Frederick which is online right now. 

Yes, I am looking for an online platform to begin self-managing too.