If so, I'm curious what resources are you using to research the local laws per each city?

I am located in Salt Lake City.

Looking to start out with a STR property and have a few cities picked out. 

Neither will the other title company in town.Here is the timeline on this parcel. 2013 - Collector's Deed issued to the city due to a lien placed on it for the expense of demolition of condemned house2016 - Declared excess property by city2017 - Sold at auction to an acquaintance of ours who intended to build on it9/2018 - Owner changes his mind about building and agrees to sell it to us for $5,000Now, $5,000 is no big risk to worry about someone clouding the title by claiming that proper procedures weren't followed and trying to redeem it, BUT we plan to put about $120,000 into building a duplex on it. 

So I have this potential deal and most title companies in my city don’t work with wholesalers.

I'd FOIA some of the local city governments/school districts/etc... to see what real estate they are selling and ask if any of them already have cell towers on them. 

They were licensed and it was required by my city.

You'll definitely need an architect to draw up the plans and get it through the city.

Normally the city or county will continue to bill the owner and when the owner finally redeems they city or county will send a check to you. 

@Pavel Ushakov if the furnace is there, adding AC still requires a permit in some cities such as the one I am in.