Anything could happen with title, probate, etc to delay or prevent closing.

Just make sure you have some kind of water proofing to prevent that happening again. 

Every state has different laws on auctioned hoes, those homes tend to be in bad shape and have a redemption period for the previous homeowner to pay delinquent property taxes which prevents any work on those homes until that period is over. 

TRUST ME, the girlfriend will admit that he was living there and will likely even allow him back into the property against orders.But even if not, if he was residing there, with landlord permission or not, lease or not, he is a TENANT, or at the very least an authorized occupant, and as such cannot be prevented from entering his primary dwelling...not by the landlord.

It hit my area pretty hard last year and most attorneys and title companies have taken measures to prevent it.

Homeowners can install proper screening for windows and patios to prevent no-see-ums from entering residences and outdoor areas used for leisure and entertaining.

For things like routine lawn care and preventive maintenance, such as termite protection, the value is the cost. 

I have since found out that other tenants on the park pay for their own monthly maintenance sprayings and have been doing this as a matter of choice since they moved in to make sure they don't get any issues in the first place.I also have 3 SFH and 2 of those tenants (also inherited) have their properties sprayed on a monthly preventative basis.I would be interested to hear how other landlords treat this issue and who's responsibility do you believe it falls upon.

IE special landscaping care to prevent dead grass, forcing the tenant to obey leash laws, requiring copies of shots, and licensing of dogs, forcing tenant to have additional insurance for the dogs that protect you?

This is to prevent the proliferation of rooming houses as rents are so expensive that 3 or 4 people would have to share the rent.