Found a plot of land - where do I even begin now?

[Alex Huang]

Up to this point, all of my investing and experience has been in the residential sector. I've purchased a handful of SFH and a duplex and they were relatively easy.

I'm looking into building a commercial building now for a separate project and I'm at a loss of where to even begin. 

I've identified the plot that I'm interested in - it's currently an undeveloped open field. I've received drawings from the zoning dept regarding the nearby utilities.

Next up, I'd like to get a better grasp of what the total costs would be from start-to-finish. 

Who do I contact or work with to get estimates on the costs of building? Specifically, the costs of pulling the utilities to my plot and getting the land to 'build-ready' grade. What type of company do I contact for estimates like that?

Beyond that, I have contacts who build commercial and plan to utilize their architects and relationships for the design and build.

Any tips or suggestions would be a great help!