It is the supply demand ratio thats causing the price increase... More the FSI, higher will be the saleable area leading to more built up area. The FSI in mumbai is in the range of 2, which wen compared to other asian countries is 4.5 to 5. For the FSI to be increased we need better infrastructure in place. During independence FSI was around 4, but considering the infrastructure then the govt reduced the FSI. But more than 5 decades they haven't thought much about the infrastructure needed. Instead of developing the infrastructure in the existing places they are interested in developing slums...If iam wrong do correct me...