That should be another good cause.Health and safety issues are another potential good cause.

Hi guys,An Airbnb guest living the floor above my Airbnb guest caused a flood in their condo, which caused extensive damages to my condo.I had to repair my unit, costing well over 20K.

the renter is supposed to follow Lease agreement, that is the legally binding document. so assuming that the current agreement has a cause for sublease, and doesnt mention terms related to sublease, and if it is part of a HOA or any association, that has STR restrictions you will need to check that as well, before you can start Airbnb for lets say additional bedroom that you have. 

The rules should set time windows for events / actions that may cause a nuisance for another tenant, such as running washer / dryers, playing musical instruments, playing stereos, etc.

They win cause they are off the hook and you win because you get a new qualified tenant for another 12 months removing 33% of the parties involved.We will offer a Chicago tenant the opportunity to hire us to locate and underwrite for a new tenant or they can find someone and we charge a small underwriting fee. 

After closing i learned there was a major irrigation issue causing the duplex to sink.

You can't really bring the rent back up cause it'll still be Nov or Dec and you need to reduce your rent at that time of the year to find better tenants. 

Depending on what caused the damage, your insurance hopefully has "loss of rents" coverage... 

Leaks or water breaks (not caused by tenant negligence) is your responsibility.

Same for electric, see if you can't get it individually metered during that first year.Those brand new units should not be too much of an issue for you, as the $1700/mo tenants are not likely going to be looking at the $950/mo units, so that should not cause you too much trouble!