You should then be able to use that to see how your county has classified them, and then use that knowledge to find the rest. 

This is in Irving Park Chicago Illinois, which I would classify as a B-level area that has been improving a lot in the last few years.

This seems backwards to me.They could be classifying this as a B&B and you need a permit license?

Chris - I've been informed that any transfer out of our "names" will be classified as a transfer and trigger the taxable event: Land Trust or LLC.

If it's far enough you can classify as vacation home but that has it's own stipulations.

Bienes,One common example would be to change how the income is classified.

@Wendy Lacey - what Katherine said:)  Also, once you go over 30 days on an STR rental, I believe it's classified as an LTR. 

Should I classify my LLC as an S-Corp or Corporation?  

There is then an economic pressure on a city to revitalize areas, low end properties become identified and may be classified as blighted areas.

That is all I will do, I will never talk about audit trails, examinations or audits in detail, it's classified to some extent, if you need to know more most examination procedures are in the Examination Procedures on the internet of each agency, what is not posted is internal aspects and techniques that I'm never going into in a public forum.