The following result is obtained by our Real-time Research: Mumbai is a city of 7 islands hence it's not having any scope of expansion. there is the scope of expansion toward Pune only. Hence, the lack of infrastructure is the main cause of rising in property price in Mumbai. The unrealistic secondary market which is based on the price rise according to the last sale of a single property is another main issue. All these issues are raised due to population explosion and lack of water supply in the city.