Don't forget to check out things like what is around them. Like

1. Where is the closest hospital? Do they have the staff of doc's (specialist) you'd want? Heart doc's?
2. How far is the nearest airport?
3. What kind of transportation around them? Buses? Subways?
4. What kind of entertainment is close by?
5. Pharmacies?
6. Grocery stores near that you could walk?
7. Golf courses (yuck...not for me, but you EW)
8. Lakes or rivers?
9. Baseball stadiums? Football?
10. How long have they been in biz? Any BBB complaints?

Just a few things that hit me...that you didn't ask for. LOL!