I am a bit concerned as to what I can and cannot say in the public domain.

I recommend this:  Put it in the Lease"The simplest way to avoid complication is to add specific language to rental agreements stipulating public sign display restrictions.

, or you mean one apartment in a building for rent maybe, and you want to rent it with several other people, that would be normal.Go to the campus housing office and ask about any rentals that they may know of for sale, or go find public records of evictions in the neighborhood, to locate landlords who may be fed up and might sell to you. 

Pretty good name, you might buy it or reserve it now, especially since you just posted it in public forums!

Company data is public knowledge and a personal check on somebody can also be performed without these numbers. 

I would suggest looking up his disbarment case, it will be public record. 

Placing liens or taking clients to court isn't generally good for public relations.I can see that being more likely in the commercial market where the commissions are so much bigger.

The aforementioned sites for the general public do not have real-time "closed" transactions.

With my background of being a public accountant, this part is a whole lot easier than it is for most people.

Looking for as many publicly available (free) real estate data sets as I can get my hands on.