Whether a permanent physical occupation of private property authorized by the government is a taking requiring just compensation, even when the occupation is minor and serves a legitimate public purpose.
Holding
Yes. A permanent physical occupation authorized by government is a per se taking to the extent of the occupation, regardless of the occupation’s size, its economic impact, or the public benefits it serves.
Reasoning
The Court distinguished ordinary land-use regulation from a permanent physical occupation. Under Penn Central, regulatory-takings claims ordinarily require an ad hoc inquiry into economic impact, interference with investment-backed expectations, and the character of the government action. But the character of the action is decisive when the government authorizes a permanent physical occupation: the Court’s precedents consistently treat that kind of occupation as a taking.
Historical takings decisions supported the rule. Cases involving permanent flooding, utility lines, telegraph poles, and other enduring physical appropriations recognized that a permanent intrusion into an owner’s domain is qualitatively different from a regulation that merely limits how the owner may use property. The rule applies whether the government itself occupies the property or authorizes a private party to do so.
A permanent occupation takes more than a small amount of physical space. It destroys the owner’s right to possess that space, to exclude the occupier, and to control its use. The right to exclude is a central property right, and a compelled continuing occupation by another party directly strips the owner of that right.
The per se rule does not turn on how much space is occupied. A cable, boxes, and wires may occupy little room, but constitutional protection cannot depend on whether an installed object is larger than a breadbox. The extent of the occupation matters in setting compensation, not in deciding whether a taking occurred.
The rule also provides a relatively clear line. A fixed structure permanently attached to real property is readily identifiable, while a rule based on the precise economic impact of every physical occupation would create difficult and arbitrary line-drawing problems.