How can I find the edges of the bubbles?

[Kelly Maestri]

Can you suggest where I can find data and what data I should be looking for?

Specifically, I want to identify geo areas in LA that are gentrifying and will have increased value in 10-20 years for SFR and plexes. I live in LA and have an idea where these geo areas are (hipster explosions)., but wonder if there is a way to pull stats to help identify fringes that aren't already hot but will be down the road.

Is there somewhere online I can pull data to identify trends by zip code?  I'm accessing multiple sites now (Zillow, Redfin, Realtytrac) but it seems rather hunt and peck (manually).

What data should I be looking for? Increase in rents? Increase in average home and plex prices?  Increase in school ratings?   

Thanks in advance for any tips!