Today, all the metropolitan cities have expanded & reached their saturation points. So their surrounding suburbs were developed & today even they are reaching a saturation point.Looking at Mumbai, one could have imagined a affordable home in Mumbai city some 20 years back. Now owning a home in Mumbai is beyond reach of many. Ten years back, Navi Mumbai was within reach for many home buyers. But today, housing in Navi Mumbai too is slipping out of reach of many.