I just moved to a new apartment. At my previous place I was paying $1200 month-to-month. When I moved out, I did not give any notice, I simply moved out on December 2nd and dropped the keys off with a note saying I had moved out. I just received an email from my former landlord saying that because I did not give them notice, they are charging me some form of early move out penalty and, deducting my security deposit from it, I owe them a little over $700. My question is: Is this legal? I realize I moved on short notice, but, I wasn't under a lease when I was paying month-to-month.