Most US zoning is pretty similar. There are exceptions like Houston, but by and large, zoning codes aren't that different from place to place. A lot of the mode

Most US zoning is pretty similar. There are exceptions like Houston, but by and large, zoning codes aren't that different from place to place. A lot of the model codes were derived from similar sources, IIRC https://islandpress.org/books/arbitrary-lines https://islandpress.org/books/arbitrary-lines has some good, if brief history of all of it.