Regulatory Takings (Penn Central Test)

Regulatory takings doctrine addresses the question of when government regulation of private property goes "too far" and becomes a taking requiring just compensation under the Fifth Amendment. Unlike physical takings (where the government physically occupies or appropriates property), regulatory takings involve government restrictions that diminish the property's value or limit its use without any physical appropriation.

The foundational case is Pennsylvania Coal Co. v. Mahon (1922), in which Justice Holmes declared that "while property may be regulated to a certain extent, if regulation goes too far it will be recognized as a taking." This established that government regulation can constitute a taking even without physical occupation.

The primary analytical framework comes from Penn Central Transportation Co. v. New York City (1978), which identified three factors for evaluating regulatory takings claims: (1) the economic impact of the regulation on the property owner; (2) the extent to which the regulation interferes with distinct investment-backed expectations; and (3) the character of the governmental action — whether it resembles a physical invasion or a broadly applicable regulatory measure.

Two categorical rules supplement the Penn Central balancing test. Under Lucas v. South Carolina Coastal Council (1992), a regulation that deprives the owner of all economically beneficial use of the property is a per se taking, unless the prohibited use was not part of the owner's title to begin with (i.e., it was already restricted by background principles of property or nuisance law). Under Loretto v. Teleprompter Manhattan CATV Corp. (1982), a permanent physical occupation of property by the government is a per se taking, no matter how small the intrusion or how significant the public benefit.

The unconstitutional conditions doctrine, as applied through Nollan v. California Coastal Commission (1987) and Dolan v. City of Tigard (1994), requires that conditions imposed on development permits have an essential nexus and rough proportionality to the government's interest — preventing the government from leveraging its permitting power to extract property rights.

On property exams, regulatory takings questions require students to determine which framework applies (Penn Central balancing, Lucas per se, or Loretto per se) and apply the relevant factors to the facts.