@Hadar OrkibiTo add to what @Ben Leybovich wrote, the main value of GRM is to predict what a property will appraise for in a 2 to 4 unit.

As mentioned, Raytown is a relatively stable and predictable area, as far as property values go. 

Just wondering if there's any way for me to predict if they might jump ship on me.

Taxpayers and consulting professionals should consider this strategy if they or their clients want to defer federal and state capital gain and recaptured depreciation taxes, prefer a more diversified asset portfolio and/or more predictable income stream, and choose not to acquire like-kind replacement property. 

I was in the County office yesterday, and noted a chart predicting a 15,000 unit shortfall in homes in 2030. 

maybe the phone directory could help if one could predict which city they live in

- No one can really predict, there are many factors in play. 

He's 'predicted' the 2001 tech bubble, the 2008 crash, and this is his third edition with his 'predictions' for the future.  

Also, we predict that this house will continue to appreciate in value over the years.  

I think you will find your next investment property pursuit will have a much more favorable interest rate and you will be more aware of the financing in general and be able to predict your bottom line after closing the finance with a bit more accuracy!