In all the civil law systems, immovable property is the
equivalent of "real property" in common law systems,
i.e. it is land or any permanent feature or structure above
or below the surface.
In the United States, immovable property is any immovable
object, real estate, item of property that can not be moved.
Includes premises and property rights (for example, heritable
building right), houses, land and associated goods and chattels.