I had signed and he had signed.

That broker or agent could have had the owner sign a (showing agreement) in advance.

FNRP purchased two good size retail strip centers in my local area and put up signs saying it is under their management.

Much like placing a stop sign on a highway. 

My girlfriend is against this idea for many reasons, but most importantly because we believe it will jeopardize our DTI for the home equity loan (which we will both sign on) for the house rehab. 

This afforded me the leverage of having filed and served, then using that to tell the tenants that if they were out and signed papers releasing possession of the apartment before court then I in turn would relieve them of the judgement for back rent.

There are property management companies, but looks like I have to sign up for a full service to do the annual inspection.

Me and the tenant signed an Agreed Dismissal Order from the court that she will move out by last month, which she did, and she will apply for the Court Based Rental Assistance Program through Will County to pay the owed rent to avoid Eviction.

I was just wondering if alisting agent would try to get me to sign a buyers agreement 

Since an executor/personal representative has not been appointed by the court and no Trust is in place, there is no one who can sign for the deceased.