New Delhi Attributing the housing boom to easy availability of loans, new housing and urban poverty alleviation minister Ajay Maken on Wednesday said that the housing bubble could burst in the absence of proper planning.

As per the latest figure, he said, the number of vacant houses in the country were rapidly rising and already accounted for 11% of the total housing units in developed areas where middle and upper middle class people live. This is like a bubble which can burst any time.