How to determine the value on Commercial Property?

[JPaul Mills]

Hello All

I have been wholesaling for a bit now and have been very active in the community here but I just received a lead on 4.5 acres of commercial property zoned C-1 and C-2.  now I dont trust the "Zestamate" on zillow but I have no clue as too how to find out what the value would be.  if the ZEST is true here then the price is 788K and I have potential to get it WELL WELL below that.  Seller said that he needs to sell it and sell it like YESTERDAY!!! any advise as to how to determine value would be great.  

@Mike Flowers