However in my opinion from working with short sellers where renters are involved, the actual renter who's named on the lease could potentially have some rights depending on how their lease agreement was written & if they've been tenants for a period of 1yr or more vs. a month to month tenancy for less than 1yrs.
But you, as a tenant of the tenant, you're basically SUB-LEASING & you have no legal lease contract with the owner.
Be careful with sub-leasing in the future, I suggest you do talk to a real estate attorney or licensed property manager for any rights you would or wouldn't have under a "sub lease".
If you do go & try to rent from an actual owner, be wary of rental scams out there & google this phrase "RED FLAGS - RENTAL SCAMS - PUBLIC BEWARE" to read an article I wrote about how NOT to get suckered by a rental scammer.
Emily S. Knell
Realtor Since 1996
Realty ONE Group
Wow! I wonder if the tenants that you have been paying the rent to have the authority to be "sub-leasing" the guest house. Do you have a written lease agreement with them? If so, check your lease to see what it says if the property is sold. Lease agreements in writing and signed by all parties must be honored but only if the tenant (landlord) has the authority to be sub-leasing the property.
And, it is best to consult a real estate attorney in this matter as it is a legal one so is best answered by them.
Good luck to you!
Prudential Connecticut Realty