90% of the city is zoned for 4 story buildings. Almost every development proposal gets shortened for whatever reason. Areas that lend well to being urban, dense

90% of the city is zoned for 4 story buildings. Almost every development proposal gets shortened for whatever reason. Areas that lend well to being urban, dense hubs for high rise offices/hotels/residential buildings like Central SOMA are zoned for 4 story buildings. It makes no sense.