Red flag.In my state you do not need the tenants permission to enter, but there are laws about entry, harassment, and providing reasonable notice.

@Hank Thomas it’s common for them to start with a “desk top appraisal” (at no cost) which means they will pull from their data source to get a valuation (usually very conservative) without going to your property.

We believe their concern was the entry way with lead lined floor with a decorative design.

Residential overview by state then by respective MSA here:https://www.nar.realtor/resear...Commercial and Industrial Overview trends here:https://www.nar.realtor/commer…Many other information conglomerates will publish data (ie CoreLogic), usually quarterly or annually.  

Also, make sure to square away the utilities, find out if you owe taxes for 2021, as mentioned above get the data on the tenants.

Since I plan on doing this for at least the next 6 months, I want to be as organized as I can so I can keep track of leads, contacts, and data.

That was 7 years ago so don't have any recent data on them 

Find the data at the following link:  Median Price Multifamily Aurora Elgin

I see this in the data and also in my business: we work with a lot of relocation clients and the reasons (for moving to Milwaukee) are usually cost of living, followed by smoke (from the fires), water (droughts in the SW) or floods.

I haven't take the time to look at the real data on what's going on with the rental market in Chicago but our system has blown up with inquiries.