From a legal standpoint, when equipment, decorations, or appliances become affixed or fastened to the real estate, it becomes a fixture and is supposed to be transferred as part of the sale, unless there is an agreement providing otherwise. What are some of the factors determining whether something is a fixture?
Method of attachment. Is the item permanently affixed to the wall, ceiling or flooring by using nails, glue, cement, pipes, or screws? Even if you can easily remove it, the method used to attach it might make it a fixture. Examples include built-in surround sound wiring, lighting fixtures, built-in speakers into the wall, custom built-in cabinetry.