Does your lease address a period of time for the company to act on the expiration? That you've entered into negotiations might also influence the termination. Careful from here on out, and a lawyer might not be a bad thing to have behind you.
I have a lawyer for the write up of the new addendum. I have not started negotiations till after my lease date expired they had 90 days before. That was all. Don't get me wrong I want to work with the Gas co they are one of the better ones around, but I am in no hurry to jump at an offer that does not have my best interests. I think my counter offer is more than fair and if they don't like it, its up to them to tell me what they don't like. If we can agree to something we both win if not I will survive without it just fine.
But what I am looking for is a termination letter from this point. I can find many for other states but not PA . I hate to leave loose ends.
I already spent a lot of money on legal fees actually more than I received for my original lease, if that isn't ironic. And I just feel I will try this on my own first. Thanks,