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The Nollans own a beachfront lot in Ventura County, California. A concrete seawall approximately eight feet high separates the beach portion of their property from the rest of the lot. The historic mean high tide line determines the lot's oceanside boundary. The Nollans originally leased their property with an option to buy, and the building on the lot was a small bungalow totaling 504 square feet. The Nollans' option to purchase was conditioned on their promise to demolish the bungalow and replace it. On February 25, 1982, they submitted a permit application to the California Coastal Commission proposing to demolish the existing structure and replace it with a three-bedroom house. The Commission informed them that the permit would be granted subject to the condition that they allow the public an easement to pass across a portion of their property bounded by the mean high tide line and their seawall. On June 3, 1982, the Nollans filed a petition for writ of administrative mandamus in the Ventura County Superior Court to invalidate the access condition. The court remanded the case to the Commission for a full evidentiary hearing. After the hearing, the Commission reaffirmed the condition. The Superior Court ruled in favor of the Nollans on statutory grounds and directed that the permit condition be struck. While the Commission's appeal to the California Court of Appeal was pending, the Nollans tore down the bungalow, built the new house, and bought the property. The Court of Appeal reversed the Superior Court. The Nollans appealed to this Court, raising only the constitutional question.

In 1965 New York City enacted the Landmarks Preservation Law, which created an eleven-member Landmarks Preservation Commission and authorized it to designate buildings at least thirty years old that possess special historical or aesthetic interest. The law required owners of designated landmarks to obtain Commission approval before altering exterior architectural features and imposed an affirmative duty to keep those features in good repair. In August 1967 the Commission designated Grand Central Terminal a landmark and the city tax block it occupies a landmark site; the Board of Estimate confirmed the designation the following month. Penn Central Transportation Co. and its affiliates owned the Terminal, an eight-story Beaux-Arts structure completed in 1913 that served as the main station for the New York Central and Harlem lines. On January 22, 1968, Penn Central entered a fifty-year renewable lease with UGP Properties, Inc., under which UGP agreed to construct a multistory office building cantilevered above the Terminal and to pay Penn Central at least three million dollars annually after construction. Penn Central and UGP submitted two plans prepared by architect Marcel Breuer: Breuer I, a fifty-five-story tower resting on the Terminal roof, and Breuer II Revised, a fifty-three-story building that would have removed part of the 42d Street facade. After four days of hearings at which over 80 witnesses testified, the Commission denied this application as to both proposals. Penn Central filed suit in New York Supreme Court, Trial Term, seeking a declaratory judgment, injunctive relief, and damages for a temporary taking. The trial court granted the injunctive and declaratory relief. The Appellate Division reversed, holding that Penn Central had failed to prove deprivation of all reasonable beneficial use. The New York Court of Appeals affirmed, concluding that the Terminal could still earn a reasonable return and that transferable development rights provided significant compensation. The Supreme Court noted probable jurisdiction.

On the night of January 11, 1983, Nancy Beth Cruzan lost control of her car as she traveled down Elm Road in Jasper County, Missouri. The vehicle overturned, and Cruzan was discovered lying face down in a ditch without detectable respiratory or cardiac function. Paramedics were able to restore her breathing and heartbeat at the accident site, and she was transported to a hospital in an unconscious state. An attending neurosurgeon diagnosed her as having sustained probable cerebral contusions compounded by significant anoxia. The Missouri trial court found that permanent brain damage generally results after six minutes in an anoxic state, and it was estimated that Cruzan was deprived of oxygen from twelve to fourteen minutes. She remained in a coma for approximately three weeks and then progressed to an unconscious state in which she was able to orally ingest some nutrition. Surgeons implanted a gastrostomy feeding and hydration tube in Cruzan with the consent of her then husband. Subsequent rehabilitative efforts proved unavailing. She now lies in a Missouri state hospital in what is commonly referred to as a persistent vegetative state in which a person exhibits motor reflexes but evinces no indications of significant cognitive function. The State of Missouri is bearing the cost of her care. After it had become apparent that Nancy Cruzan had virtually no chance of regaining her mental faculties, her parents Lester and Joyce Cruzan, who serve as coguardians, asked hospital employees to terminate the artificial nutrition and hydration procedures. All agree that such a removal would cause her death. The employees refused to honor the request without court approval. The parents then sought and received authorization from the state trial court for termination. The trial court found that a person in Nancy's condition had a fundamental right under the State and Federal Constitutions to refuse or direct the withdrawal of death prolonging procedures. The court also found that Nancy's expressed thoughts at age twenty-five in conversation with a housemate friend suggested that given her present condition she would not wish to continue on with her nutrition and hydration. The Supreme Court of Missouri reversed by a divided vote. The court recognized a right to refuse treatment embodied in the common-law doctrine of informed consent but expressed skepticism about the application of that doctrine in the circumstances of this case. The court found that Cruzan's statements to her roommate regarding her desire to live or die under those conditions were unreliable for determining her intent and thus insufficient to support the coguardians' claim to exercise substituted judgment on Nancy's behalf. It rejected the argument that Cruzan's parents were entitled to order the termination of her medical treatment, concluding that no person can assume that choice for an incompetent in the absence of the formalities required under Missouri's Living Will statutes or the clear and convincing inherently reliable evidence absent here. The Supreme Court granted certiorari to consider the question whether Cruzan has a right under the United States Constitution which would require the hospital to withdraw life-sustaining treatment from her under these circumstances.

In 1986, petitioner David H. Lucas purchased two residential lots on the Isle of Palms in Charleston County, South Carolina, for $975,000. He intended to construct single-family homes on the parcels, which at the time were zoned for such use and required no building permit for development. No portion of the lots qualified as a critical area under then-existing coastal zone legislation. Subsequently, in 1988, the South Carolina Legislature enacted the Beachfront Management Act. The legislation established a baseline and prohibited construction of occupable improvements seaward of a line drawn 20 feet landward of that baseline, directly affecting Lucas's parcels by barring any permanent habitable structures. Lucas filed an action in the Court of Common Pleas alleging that the Act's restrictions effected a taking of his property without just compensation. Following a bench trial, the court determined that the prohibition rendered the lots valueless and ordered the state to pay just compensation in the amount of $1,232,387.50. The Supreme Court of South Carolina reversed the trial court's judgment. It accepted the legislature's findings that new construction threatened public resources and concluded that a regulation designed to prevent serious public harm could not constitute a taking. The United States Supreme Court granted certiorari to review the South Carolina Supreme Court's decision.