If you used the standard agreement of sale doc used by realtors for PA, section 4(H), it says seller will not enter into new leases, or extend existing leases without buyer approval, so you have your out right there.

Is this standard for a property to drop in value over 100k over a 15 year period? 

If staying in a motel for a period of time doesn't bother them, they have low standards. 

If this were the case, though, I would probably convert my house to more of a standard long-term rental and go through the process of getting rid of furniture, etc.

@Chris Maudlin if this is a FEMA flood insurance policy, then the rates are standardized across all agencies, as it is a federal flood program.

Understand any provisions within the docs that impact how and when the interest rate can change.2) You do not want a note that can be called for anything other than standard, typical events of default.

There is no defined Turnkey real estate industry to standardize.  

As far as a rental goes, if the combination of mortgage, HOA and other standard holdings are covered by the rent, it's usually a great rental. 

Many investors don’t get a license since they believe they may be held to a ‘higher’ standard or could be accused of ‘taking advantage’ of un-represented sellers – but all these concerns can be handled by proper disclosures.

There are some guidelines that our local MLS' and NAR (Nat'l assoc. of Realtors) have us follow and those are the things they prohibit us from saying.That being said, the information you're looking for from an agent who specializes in MFR is pretty standard.