How I can calculate Oakland 4 unit property value

[Charles Kim]

Hello,

I have a 3bed 1bath 4plex property(less than 4,000 sqft) in the east Oakland area and all units have recently been replaced with new tenants. I had renovation for all units before the new Tenants comes in and Total rents now are $10,500 monthly.

The neighbor sold price is a little bit low based on the SQFT. I want to know the real GRM valuation based on this cash flow. How can I calculate on east Oakland?

I'd like to enjoy the Cash Flow of this units right now, but please let me know if there is any other option.