Every time I have moved the contract stated all appliances stay. The legal default is you take them all - washer, dryer, stove, refrigerator, dishwasher, light bulbs, window shades. However realtors all know to put into the contract what stays because most most people want those things in the house and don't want to move them. However more than once I've bought a house without something (the old fridge broke a week before they listed the house so they didn't bother replacing it). If something isn't in the contract and you leave it behind they can charge you for disposal of their garbage!