1, some related functional areas are arranged together, and external economies of scale can be obtained, for example, banks and jewelry stores can be built nearby.
2. Some functional activities are restricted by other conditions and have to give up the best position. For example, furniture stores, because of their large area, tend to gather in marginal areas with low rents in order to avoid paying high rents in the central business district.
3. Various functional activities need certain specific requirements and special location conditions, such as convenient transportation in industrial areas and large open space in residential areas.
4. Some functional areas that interfere with each other will not appear in the same place. For example, high-grade residential areas and heavily polluted industrial areas should be separated by a certain distance.