I've lived in this building for 5 yrs. They just posted a note in the elevator you can only smoke on your balcony or

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Hi there, is there a lease agreement?

Does the lease agreement say anything about smoking (the most recent one you executed)?

Does the landlord own the entire building?

The landlord might be able to do that if another tenant complaining about health and safety concerns where the smoke is going through into those vents.

This technically may be seen as a change of the lease.

I see. This may not be legal, but the landlord may still be able to do an eviction proceeding if your actions (of smoking inside) is compromising the health and safety of the other tenants (i.e., your smoke goign throguh the vents).

Yes, he will have to change the lease to non-smoking. This could be an illegal amendment.

Correct, it does not matter what the new leases say, as long as you did not sign a new one, your rules are set by the lease you executed.

Exactly. once you sign a non-smoking lease, you will be bound by that.

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