It's not "free" to sell a home, it's not just the realtor fees but getting a home "sale ready" is often different than "rent ready" and that doesn't even include potential for vacancy expenses and holding costs during the sales process.  

It doesn't say they will call the loan, unless that's in another paragraph of the agreement.

Just because the site is 4155 sqft doesn't mean that is your building envelope.

@Kyle Gendron39-49 cent just for the stamp doesn't make financial sense.

Make the offer seem extreme and then when the house doesn't appraise, renegotiate?

Owner doesn't know exactly when remodeled but likely between 2009 - 2012 so is in pretty good condition.  

Property manager doesn't want to field calls from owners, just from tenants and repair people.  

yeah 10-20k discount doesn't sound like much for a flood damaged property.I saw a realtor in Houston  here on BP mention that Houston Association of Realtors (HAR) added a feature to search for Harvey damaged homes , not sure if there is something similar in FL.

The investor makes money from net rents each month, and doesn't have to do much else other than vetting the provider before cutting a check (though this is still labor intensive). 

It doesn't matter who pays the rent.