My apartment building has recently been sold. The new owner has requested that I pay an additional $250 security deposit for potential clean up and unpaid utilities if and when I move out. When I moved in there over 1 year ago...I paid a one month security deposit. The new owner claims that is for my last months rent when I give notice. No one else in the 4-plex has been asked to pay this additional security deposit but me. I'm a 24 year old single guy. Please advise.