I was thinking the data would get deidentified as well (if someone searches for rents in a particular area it would just tell them 2 bedrooms withing 4 miles rent for a min max average, without revealing any actual addresses).

This is nothing but trouble you can see coming a mile away.

Andrea Walter/Catherine Miles at www.hersheyinsurance.com .

The best deals aren't always sold on the open market... sometimes it takes pounding the phones and calling every real estate agent in town trying to find out about that pocket listing and convincing them that you can close on it, or by sending out mailers to every multifamily owner in a 5 mile radius trying to find a burnout landlord looking to sell. 

Next they’d head out the door to run a few miles or hit the gym – more work.

If you have an actual recent appraisal (performed manually by a licensed appraiser), that would be the gold standard as far as determining the property's value, and should be highly accurate.Sales of comparable homes within the last six months and within a half mile are the primary determinant of a property's current market value, and are what an appraiser will use to determine said value.

I am looking for someone the the south east wisconsin area, Milwaukee, Waukesha, Racine.

Literally 80% of all buildings in a 1/4 mile radius are under construction.

Now understand mine is a 2013 and sits in storage in anchorage 500 air miles from where I live.

@Miles Stanley It covers everything you mentioned except for having to replace an entire roof.