Whether the Equal Protection Clause permits a "class-of-one" claim by a person who does not allege membership in a larger protected class or group.
Holding
Yes. A plaintiff may state a class-of-one equal-protection claim by alleging intentional differential treatment from similarly situated persons without a rational basis.
Reasoning
The Court relied on its earlier class-of-one decisions, including Sioux City Bridge Co. v. Dakota County and Allegheny Pittsburgh Coal Co. v. Commission of Webster County. Those cases recognize that equal protection protects each person against intentional and arbitrary discrimination, whether the discrimination comes from the text of a law or from officials' unequal implementation of it.
Olech's complaint alleged that the Village intentionally required her to grant a 33-foot easement while requiring only 15-foot easements from other property owners seeking the same water connection. At the pleading stage, the Court could fairly construe those allegations as claiming different treatment of similarly situated people.
The complaint also alleged that the larger easement demand was irrational and wholly arbitrary, and that the Village eventually provided service after receiving the 15-foot easement that it allegedly accepted from others. Together, those allegations supported the inference that no rational basis justified the difference in treatment. The number of people affected did not matter: whether the complaint described a class of one or a small class of five, equal-protection analysis was the same.