Does anyone have an idea how much it costs for electricity, gas and water for one person? I rent out a room in my townhouse to a bud of mine, but am considering giving him the boot closer to summer. I don't charge him much in rent at all but want to make sure the loss of income doesn't affect my current lifestyle too much as I'm running lean as it is already. It's a 3 level townhouse that is pretty well insulated and currently has two occupants, myself and the roomie.