Whether a compelled permanent public easement across private beachfront property would constitute a taking if imposed directly rather than as a permit condition.
Holding
Yes. A permanent public easement authorizing continuous passage across private property is a taking of a property interest that ordinarily requires just compensation.
Reasoning
The Court treated the public easement as a permanent physical occupation of the Nollans' property. The right to exclude others is one of the central rights in the bundle of property rights, and a permanent right for members of the public to pass and repass over the land substantially invades that right.
The fact that no particular person would remain permanently on the Nollans' land did not change the result. A continuous public right to traverse the property is still a permanent physical occupation for Takings Clause purposes.
The Court declined to rest its decision on California Constitution Article X, section 4, which concerns access to navigable waters. The state appellate court had not relied on that provision, its application to a lateral easement was uncertain, and the Commission had not properly presented that state-law theory.