Most real estate contracts in Westchester County state the property is to be broom clean prior to closing. Unless you made another arrangement with the owner, this is how it should be. You should do a walk through prior to closing to make sure the owners have moved out and haved not left anything. If you are using a Realtor for this purchase they should advise you of all of this. You should also contact the utility company to have service turned on in your name as of the day of the closing. If you don't do it in advance you could wind up with no power. Once it's off, you have to schedule with them to have it turned back on and the main breaker to the house has to be off. It could mean days with no power, not a good thing in the winter.