6 Unit Multi-family

[Damon Kellar]

There's a 6 unit multi-family complex that I've found listed online.  I reached out to the listing agent and didn't get a response.  There's no list price for the complex.

How do I go about valuing the property and do I need my own commercial agent to help w/ the process rather than the listing agent?  Or since this is my first property should I find sometime else to start w/?