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.

The city wants to tear the property and surrounding properties down Zillow said it’s worth 38000The city offer me 13000.I could use some adviceHard to give advice with limited information, but as a general rule, the longer you wait and the further down the line their project is the more valuable your property will be to them.Zillow (and all automatic online) estimates are very unreliable, so don't base on that.

It would be pretty simple to find a mortgage loan calculator online; input the current loan balance; and modify the terms as needed.

I didn’t know anyone in Alabama, so I called a few agents I found online and ended up picking one from BiggerPockets.

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.  

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

For example college rentals generate some of the highest ROI of properties I come across in New Jersey but it depends on the school and location of property.

If you don't get access to the property before closing it can be tricky but if there are recent photos online or you can walk through before and take your own then it is much easier.

The online gurus are the worst.

Networking with local real estate groups or online forums could help you find recommendations for PM companies that have a proven track record in Birmingham