Great responses, guys. Thanks!
Here's what I've hard so far:
Vacancy rate
ARV to rents ratio
Tax/utility rate trends
School quality
Infrastructure maintenance
Current/future land use plans
Crime rates
Median income
The "drive through at night" test
I think all of these, even the ones i don't fully understand yet, are clear indicator of an community's health. I'm sure there are others as well, so please continue to add to the last.
@joel owens, can you give me when example of how land use planning might play into a decision to invest in an area?
I dont want to get too far ahead, but the next mental steps appear to be:
1. Assess which criteria are "core", i.e. which might be used for initially coming up with possible options, which are important later on for narrowing down your options and which are really optional/nice to haves.
I suppose there is some dependence on strategy here. But hopefully there are a last a few sensible guidelines from which to begin...
2. One I have some criteria, the numbers themselves come into play. For example, a vacancy rate above N% might be a deal breaker, while a vacancy rate a little below that means it's still possible, but far below N% and it's a major plus...
Thanks again and keep the ideas coming...