Every city has its own Municipal Code that is unique to each city.

@James Peluso I'm a big believer in choosing a market that best meets your investment objectives.

I'm more rural myself, so agree with your objective.

In the mean time getting adequate living arrangements is my number one objective, so if you know of inexpensive and temporary student rooms send them my way.Thanks again!

I can change the key to a maintenance/showing key, then rekey to unique key prior to move in.

I don't think they will be able to offer the the more unique properties or locations that you can get now.

Screen them objectively, don't make assumptions, don't miss out on a great tenant!

I'm not sure how much that will draw away from Airbnb/VRBO where every home is unique.

Of course, there are ways to make money in any market, but I think we're talking about the passive buy-and-hold investor.The system would take demographic, economic, and sales/rent data to allow you to start from the whole U.S. and then filter down -- to very specific small areas -- that meet the requirements for your investment objective and merit a closer look.

Which market are you currently investing in? Elderly housing? Trailer parks? Student Rentals? A Class homes? B class homes? C class? D Class? War Zones? Section 8? Ex-convict housing? Foreign exchange housing? Air Bnb...