Makes for very easy updating.As for out-of-state, @Daniel Hyman is correct that any competent tax preparer should be able to handle different state returns using easily available resources. 

Springfield is a very different markets than STL or Chicago.

A friend and I created one recently:https://drive.google.com/file/...It was meant to compare costs between different lenders, but you can use it to just see costs from one lender as well.

Will this functionally make a difference one way or another? 

Hence I am staying  away I had a different experience and the advisor I worked with sent me the numbers right away whenever I asked.  

@Tony Schmucker if it were me, it would totally depned on a ton of differing factors that you may not be measuring (some outside of investment real estate). 

It will give you an entirely different prospective on investing, time management, and economic outpatient care.

Since you're looking to expand into Florida and other states, I'd recommend starting by narrowing down your focus:Market Research – Florida has great opportunities, but each state and city has different laws, taxes, and demand drivers.

Where can I find the info on how you group the different neighborhoods into classes? 

We've always hired a tax protest company and have done so in three different states.