Or, in most metro areas, you can obtain the list of permits that have been issued, and see who is receiving permits. 

Like anything it has to stay balanced but small gestures go a long way in reducing turnover and mitigating many "would be" issues. 

look at Rural Japan its closer and much better tenants you can buy homes there for 40 to 60k that rent for 500 to 700. never a worry about tenant issues like your going to experience with C class US tenants.  800 sq ft is a very large home in Hong Kong if your not living with family and your maid in the same apartment What a coincidence!

Or should I just have them install another meter for the third floor to avoid any potential issues going forward. 

Title issues tend to be the fact pattern where properties are truly not financeable but that's rarely the case when you see the "cash only" adverts.Ultimately, proceeds will be transferred through a title company and its not as if the buyer is showing up with a duffel bag filled with cash.

In Philadelphia, which is where I am located there was a recent re-set on rents that are significantly higher and suspect the increased rents will cause more investors to turn to the program which may cause more lease-up issues.

My youngest is 16 and very independent so no issues there.  

There are cheaper one’s in D/F areas but I would be careful as those can create a laundry list of additional issues.

I know I know getting property won't be an issue, I've done it once and that experience helped me so much, but what if i wanted to acquire two properties this year?

After looking at your post, I realized it's probably necessary to have a dedicated real estate attorney handle this issue for me since it's serious and I might make a mistake big enough that probably will cost me too much money to fix.