Neighborhood Ratings - Classifications

[Mark Lindsley]

Hello BP! Newbie Investor here trying to do all of my research before my first deal. I keep hearing about neighborhood ratings on the podcasts and posts: A, B, C, & D. I've used Trulia.com to look up Crime Info for a neighborhood, but have not seen where to truly find this neighborhood rating.

Is there a go to website for this neighborhood rating or is it just kind of subjectively created?

Thanks,

Mark