The Landlord
No. If the property is about to be foreclosed, the landlord has no obligation to give the tenant any notice of anything. After the foreclosure, the landlord will have nothing to do with the tenant.
A landlord is generally a person owns property for rent. A tenant is someone who rents property from a landlord.
A landlord must notify a tenant at least 24 hours in advance of any work that is about to be done on the property. It should be done in writing.
Generally there is no point in suing a property manager for not collecting rent. It should be noted that the tenant is responsible for paying his rent on time. It is not the responsibility for the landlord to collect the rent. If the landlord does not collect rent and the tenant should send it to the landlord by mail or in person.
Tenant and lessee are the same thing, they are a person who rents property from a lessor who own property that he wants to lease.
Yes. Since the tenant affixed the improvement to the property, it becomes a fixture, which belongs to the landlord. An exception to this is if there was an agreement between the landlord and tenant, or if the landlord gives permission for the improvement to be removed. Standard picture hooks, and other like objects, do not constitute fixtures, and may be removed if they belong to the tenant.
At least 24 hours.
That would be a good idea. This is also something that should be addressed in the lease.
Not automatically. Oftentimes the new landlord can keep a tenant or opt to ask him to move out.
The tenant should stop paying rent whenever the governmental agency to whom the taxes are owed threatens to foreclose or repossess the property. In that case, the tenant should demand (in writing) that the landlord pay the delinquent taxes. If the landlord refuses, the tenant should move (again, upon giving written notice to the landlord).
Yes. The building belongs to the landlord and needs the key in case of an emergency, or if a tenant abandons the property. Also, you should probably check with the landlord prior to changing locks. There might be a clause in the lease stating that only the landlord can change a lock, not the tenant.
I can only answer for Massachusetts, but I think you can. The landlord has a right of entry, but he should get the permission of tenant, and the tenant has a right to be there at the time. If the landlord needs to get in during an emergency, perhaps he should be calling the police.