I would check out linkedin, glassdoor, handshake, indeed, among other sites

I added that title to my LinkedIn reading list.

Did I mention Linkedin??

Notes are not something that you get instant gratification from and if you are going to be the 1% that does anything, then you've got to actually put some work into drip marketing emails to asset manager lists, connecting with asset managers on Linked IN, and dialing for dollars.  

Google Mark Van Dyke and you will find him on LinkedIn....Face book .....youtube......pitching how to wholesale real estate all over the country. 

My number and linkedin are in my bio.

I looked at their linkedin profile to research them and got a nice message asking if they could be of assistance.3) Sense Financial has an internal web portal for all of its clients that has a library of information.  

If I do a search on LinkedIn, what titles should I look for?

Adam,1) Based on your office building, the location & market list the potential tenants who will love your office building.2) Seek out through LinkedIn people who work for those prospective tenants3) Connect with those people and ask them if they want a newly renovated office space in Chicago4) Email them with a professional looking package that sells the merit of your office buildinge.g., say one of the tenants you identify is Procter & GambleUse linkedin to search for P&G people who work in their commercial real estate department (or people in charge of looking for office space)

These days I'd start with Facebook or Linked in and go from there.