Methods for researching historical sales

[Gary Bracken]

Hi All, 

I am looking at purchasing my first rental property in Newark, NJ (3-Family), although I am not from this area myself. I would love to know if there is a method I can use to plot out which areas are historically more expensive or inexpensive? Essentially, which are the 'good' parts and 'bad' parts.

I have been searching through Zillow, Trulia, Redfin etc. which gives you current market value of what's available, but I would like to build a  more detailed historical map of 3-family homes throughout the different neighborhoods so I understand completely the dynamic of the city and know whats changing or has already changed.

This may be a big ask. I have already visited the area for multiple days, driving everywhere to get a feel for it, but it is not enough for me to make an informed decision on my investment.

Any info or advice that you guys have used in the past would be greatly appreciated.

Thanks, Gary.