We have been renting a commericial property for over five years. The last lease we signed has expired several months ago. Does this mean we are legally in a month-to-month situation? We want to give notice, and our landlord is insisting on a 60 day notice as mandated in our original lease. Does that still apply? Also, our landlord wants to increase our rent for the last month (he originally wanted us to sign a new lease at that higher rate which is why we are leaving). It seems that he has no right to charge us a higher rate for the last month. Thank you!