deposit. If you move to a more expensive place a few weeks in, they're going to want the difference on that security deposit. In Florida, you usually don't upgrade your security deposit if you are shifting in the same community, especially if you have a history with the development. It also isn't used as your last month's rent, though it would make a ton more sense if it did. My guess is that either the new girl has no clue what she is doing, there are moving/cleanup/whatever fees the management company wants to take advantage of, or that the $650 rent was listed before "upgrades" like having a top floor room, a nice view, or a washer and dryer installed in unit. I know in a lot of places, signing your lease for $650 could end up being $775 if you get a nice unit after "upgrade fees." Be sure to get, in writing signed by the management company, a breakdown of what they want you to pay and why. If they won't give you something, then they probably have no basis for the charge. It had absolutely nothing to do with "last month" or anything, it was working purely in September. Ok get the word "last" out of your head, because you're not hearing what I'm saying. When you first moved in, what did you pay the nice lady? $575? Or $575 x 2? Not an idiot... When I say "last month", I'm referring to the first/last month that