Written by attorneys · grounded in primary & secondary sources — see below
A governmental justification for the exercise of eminent domain, zoning power, spending authority, or contract regulation that consists of an action or project benefiting the community as a whole rather than a private individual. Courts equate the term with public use under the Takings Clause and require that rezoning amendments and contract impairments bear a substantial relation to public health, safety, morals, or general welfare. The justification fails when the primary benefit flows to a particular landowner without a broader community purpose.
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How it applies
Common Examples
6
Eminent Domain for Economic Redevelopment
The city of New London condemned Susette Kelo's waterfront home as part of a comprehensive plan to transfer the parcel to private developers for a research campus and hotel complex. The owners challenged the taking on the ground that the ultimate private ownership served no public purpose. The court upheld the condemnation because the plan was rationally related to creating jobs and increasing tax revenue that would benefit the entire community.
Rezoning for Mixed-Use Development
Premier Manufacturing petitioned the city council to rezone a single industrial parcel to allow residential and retail uses. The council approved the change after public hearings, finding that the project would generate employment and improve traffic flow for surrounding neighborhoods. A neighboring owner sued, claiming the rezoning constituted invalid spot zoning without a public purpose. The court sustained the amendment because it advanced the comprehensive plan's goals of economic revitalization and general welfare.
Mortgage Moratorium During Depression
During a severe economic downturn, the Minnesota legislature enacted a temporary moratorium on mortgage foreclosures to prevent widespread loss of family farms. A lender challenged the law as an unconstitutional impairment of its existing contracts. The Supreme Court upheld the statute because the emergency measure served an important public purpose of preserving the state's agricultural economy and was narrowly tailored to the crisis.
Invalid Spot Zoning for Private Benefit
Platinum Partners obtained a rezoning that permitted a high-rise office tower on one lot surrounded by single-family homes, contrary to the comprehensive plan. Adjacent homeowners sued, arguing the change lacked any public purpose and merely conferred a windfall on one owner. The court invalidated the rezoning as arbitrary spot zoning because the primary benefit accrued to the developer rather than the surrounding community.
Zoning Restriction on Extended Family Living
The city of East Cleveland enforced a zoning ordinance that limited occupancy of single-family homes to members of a nuclear family, preventing Inez Moore from living with her grandson. Moore challenged the ordinance as lacking any substantial relation to public health, safety, or general welfare. The Supreme Court struck down the restriction because it arbitrarily interfered with family living arrangements without advancing a legitimate public purpose.
Moore v. City of East Cleveland, Ohio431 U.S. 494, 503 (1977)
Landmark Designation Limiting Development
New York City designated Grand Central Terminal a landmark, preventing Penn Central from constructing a fifty-story office tower above the station. The railroad argued that the restrictions served no public purpose and effected a taking. The Supreme Court upheld the designation because preserving historic structures for the benefit of the entire city constituted a legitimate public purpose that justified the regulation.
Penn Central Transportation Co. et al. v. New York City438 U.S. 104, 98 S.Ct. 2646, 57 L.Ed.2d 631 (1978)
Common questions
Frequently Asked
5
How does public purpose differ from the narrower public use requirement under the Takings Clause?+
Courts treat public purpose and public use as interchangeable. The Supreme Court has held that a taking satisfies the public use requirement so long as it is rationally related to a legitimate public purpose, even when the property is transferred to private developers.
Supporting sources
When does spot zoning fail the public purpose test?+
Spot zoning fails when it singles out one parcel or small area for a use inconsistent with the surrounding zone and the change primarily benefits a particular landowner rather than the community. Rezoning must bear a substantial relation to public health, safety, morals, or general welfare to survive challenge.
Can economic development alone supply a public purpose for eminent domain?+
Yes. The Supreme Court has upheld takings that transfer property to private developers when the project is part of a comprehensive plan reasonably believed to create jobs, increase tax revenue, and promote economic revitalization for the community.
Supporting sources
Does a temporary contract impairment during an emergency satisfy the public purpose requirement under the Contract Clause?+
A temporary impairment can be upheld if the legislation serves an important and legitimate public purpose and is a reasonable and narrowly tailored response to an emergency, such as preserving the agricultural economy during a depression.
Supporting sources
What role does public purpose play in municipal spending and property acquisition?+
Municipal expenditures and acquisitions must serve a public purpose. Courts consider factors such as the number of residents benefited, the prospect of profit, and the need for the undertaking in light of economic conditions and private-sector alternatives.
Supporting sources
without just compensation—into a single standard: "[B]efore [a zoning] ordinance can be declared unconstitutional, [it must be shown to be] clearly arbitrary and unreasonable, having no…
of it, see Reply Brief for Petitioners 6, miss the point. The confidential information was generated from the business, and the business had a right to decide how to use it prior to…
within the general competence of the state? See Pierce v. Society of Sisters , 268 U.S. 510, 535. Another member of the sect now before us insisted that in forbidding her two little girls,…
Constitutional LawIndividual rights · Due processUBEIntermediate