Working with someone with proper knowledge about the market you're looking in is imperative for this.

From there you can build your CORE 4 wherever you want to invest in. I

If think you'll have capital expenses I'd factor those costs in. I

Quote from @Adam Bartomeo: Quote from @Jay Hinrichs: U also are fighting all the investor who flooded int to build new homes for rental purposes so OVER supply.. and we know a ton of those got stuck with bad builders and are being worked out so supply is going to keep coming in .. I

In future we could also rent out the main house that we currently live in. Is

We have a new administration coming in . I

They are summed up separately and then at the bottom I can add everything up to see what all properties are combined bringing in. I

Of course a lot of depends on the specific market you are in.  I

What you will be looking in is chapter 4, credit underwriting.  

In each market I operate in I have someone available for showings this person is usually my runner who is responsible for quality control and restocking inventory but I've also used a cleaner for this.