On this day in 1926, the United States Supreme Court issued its landmark opinion in Village of Euclid v. Ambler Realty Co., 272 U.S. 365 (Nov. 22, 1926).
You know this one (shame on you if you don’t!) – it is the case in which the Supreme Court first upheld — against a facial due process challenge — the validity of this thing we call “zoning.” While in the intervening century, zoning has become a catch-all term for regulatory restrictions on the uses of real property, land users know that “zoning” — ackshually — refers only to the regulation and separation of uses, and restrictions on density, and height regulation.
While “Euclid” and “Euclidean zoning” have become part of the land use lexicon and landscape, the decision might have been seen at the time as somewhat surprising. After all, the Supreme Court was in


