Classifying Neighborhoods and Properties A to Z - A discussion

[James Masotti]

I saw a post from @Joel Owens on this thread and it made me wonder how everyone identifies their property types. 

By this I mean...you'll regularly hear investors say stay away from D class neighborhoods. Or I only invest in B+ neighborhoods or better. 

Now I imagine this is some what subjective and is possibly even different from single family to multi family or from urban to suburban but the questions I put out on the table is:

What scale do you use to classify neighborhoods and properties?

And 

What is your criteria for each step in the scale?

Discuss

[David Lichtenstadter]

A is good school good job, where everyone would prefer to be in. I dont have issues showing anytime
B is okay school, usually ppl who can't afford A. Safe and good job, I don't have issues showing anytime
C is inner city, or outskirts, I would still feel safe to show at 9-2pm, maybe, if later I will wait in car til client shows up
D is warzone, low income, on the news for crime, I try not to show, if I do, I try to make it in broad daylight, Bring flashlight, bc it's most likely distress with no utilities.. I also make sure a relative will check on me, or call during the show