Finding comparables on multifamily properties

[JC Chavez]

GOAL: I am looking to purchase a 10-20 unit apartment complex and trying to establish market value using multiple methods.

I understand there are multiple ways to estimate fair market value of a multifamily asset, but I am interested in hearing about your experiences with the ways you find most helpful. 

Also, I am looking for the best ways to find comparables on sold multifamily apartments nearby. Is there a good way to research this?

Thanks in advance!