Zoning has only been part of the real estate landscape in the US since 1916.

 
In what city was the first zoning ordinance passed, and what was its purpose?
 
In 1916, New York City became the first U.S. municipality to adopt a zoning ordinance, with other localities following shortly behind.
 
The ordinance created separate zones across the city for different types of land uses. While on paper the rules separated different types of land uses, proponents of the ordinance also advocated for segregating classes of people.
 
One of the ordinance’s purposes was to separate garment factories from department stores in order to discourage largely immigrant factory workers from spending time near high-end retail.
Source: American Enterprise Institute Housing Center