Of course.
Yes, if I understand your question. The grandmother didn't own the house, so she was a renter and if the daughter moves in she will be the renter. Therefore she can be charged rent.
no
If your landlord is selling the house you have to continue paying the rent for it, whether to the old landlord or to the new one. Your old landlord will give you notice about when they have sold the property, and the new landlord will give you instructions on how to pay them the rent.
Yes.
Landlord
Why not? Even family members can rent to one another.
Yes.
Yes.
Yes it is required to fill out a rental agreement form to rent a house. Without this agreement the landlord of the house will not let you rent the house unless you fill out the agreement.
yes they can but make sure to ask the landlord first so you get no surprizes it also depends on how long that person has stayed over
Well, it depends on the landlord/landlady, to be honest.
A landlord cannot legally harass you for rent if your rent is not in arrears.