It is estimated that there are currently around 150,000 Japanese last names used in Japan today. A list of the top 100 surnames comprise almost one third the population: Common Japanese Surnames
Zoning, the regulation of the use of real property by local government, restricts a particular territory to residential, commercial, industrial, or other uses. The local governing body considers the character of the property as well as its fitness for particular uses.
Supply and Demand. In a developed area with defined boundaries and a stable or growing population, zoning will protect and promote property values because growth will be limited to what the zoning allows. The greater the area is already developed relative to what the zoning allows, the less new growth will be permitted.