This is one of those annoying tasks that no one thinks about doing ahead of time, but is crucial, as you don’t want to forget and end up paying the buyer’s electricity bill for the first month.  So call now to let the utility companies know that you’re moving. Ask to have all utilities taken out of your name the day of closing.   Generally, in DC you’ll call Pepco for the electricity and Washington Gas for gas service.  You’ll also want to call your TV and internet provider as well.   If you’re selling a single family house in Virginia, you’ll need to arrange for the water bill to be taken out of your name. If you are in DC or Maryland the title company will hold money in escrow for final water bill. They will also place in buyers name.  Have all of the utilities stop on the day of closing. If you have a security system, schedule it to be shut off the day before closing. 

If you’re moving to a new home, transfer the utilities to your new home instead of canceling them.

Also remember to arrange to have your mail forwarded. You can do so here

Here is a link to contact information for the utility providers