Homeowners insurance for multi-family

[Jaclyn Spinelli]

Hi all!

I'm in Chicago and have an offer in on a 4 unit multifamily in the suburbs.  I'm shopping around for homeowners insurance - do I actually have to call all these different insurance companies?  Rates are considerably higher than I expected based on what the seller had quoted, which I understand won't be perfect but it's almost twice as expensive.  

Does anyone have any tips / strategies etc. for finding the best rate with as little calling around as possible?

Thanks!