Euclid v. Ambler (1926)
The U.S. Supreme Court upheld zoning as a constitutional exercise of police power, ruling that a village could separate residential and commercial uses. The case involved a 68-acre tract in Euclid, Ohio, and became the legal foundation for all American zoning.
Cities across the country adopted zoning ordinances with new confidence.
The ruling enabled the district-based land-use system that Planned Development Subdistricts now use.
The Oak Lawn PD subdistrict application rests on the zoning power this case established.
