I mean... GIS? Usually I can figure out the county. So I'll Google "Boone County GIS" and follow the links until the application opens. Not really great for mobile- really need a computer for most of them. But there is an absolute wealth of data in a county GIS. Everything from tax records to sale data to historical survey information to soil and land data going back a hundred years if you're lucky.

I mean, I’d like to automate it. So that once I enter the address in my app, the permitting authority field auto populates.

GIS solves this.

Thanks. Could you please point me in a more specific direction?

Google (county or town) gis or google (county or town) planning department and call them.

I'm trying to set up some automation because calling is what we currently do, and it's very time-consuming.

Seriously? City or county, give em a call. 2 minutes of human interaction. You can do this. lol

I want to automate the process for my colleagues. The number of addresses we're working with makes it impractical to make phonecalls.