Ask a landlord-tenant lawyer and get answers ASAP
I'm Lucy, and I'd be happy to answer your questions today. I'm sorry to hear about your situation.
Is this an apartment that you're renting/subletting from your granddaughter? Or are you both on the lease? If you're renting it together, have you spoken with the owner?
What state are you in?
I apologize, but you've got me just before I need to sign out for the evening. I'm going to opt out and open this question up to the other experts. Good luck with everything.
What does your letter of residency state and who signed it?
Who do you pay rent to and how often? Is there an oral or written agreement for that?
It appear to me that you do not have a lease agreement with the LL to live there and it is unclear whether the LL knows that you are living there. So, if your granddaughter is the named tenant on the lease, you are there as her guest. She may be in breach of a contract with your mother but until that is proven in court you are subject to being evicted either by her or the LL. She may not want to complain about the heat to the LL because she did not get the LL's permission for you to be a tenant there with her.
I know this is not the answer you wanted to hear, but I am assuming that you are paying for a professional and honest answer.
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