This is in addition to the already existing unmet demand, it added.
Acccording to the Ministry of Housing & Urban Poverty Alleviation's 2012 estimates, housing shortages was around 18.78 million units in the entire country.
"Total new demand for urban housing in India is expected to be nearly 13 million units by the end of 2018 on account of the burgeoning population in urban centres," C&W said in a statement.
Supply is estimated at 1.31 million homes in these eight cities -- Delhi-NCR, Mumbai, Kolkata, Chennai, Pune, Hyderabad, Bangalore and Hyderabad.
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Delhi-NCR is expected to witness the highest demand of around 8,18,600 units across all segments during 2014-2018.
Good employment opportunities along with a large geographical spread leads to massive housing demand in the national capital region.
Delhi-NCR is likely to have the highest supply of around 5,16,000 units delivered in the next five years, followed by Bengaluru with around 2,43,000 units and Mumbai with 2,03,000 units.
Commenting on the report, C&W Executive Managing Director South Asia Sanjay Dutt said: "The private sector housing has been grappling many issues such as rising input costs, expensive land valuations, outdated building norms, restricted access to funding, serious delays in regulatory processes and uncertain economic conditions resulting in poor and/or slow sales volumes, all of which have resulted in holding back the growth of this sector since the last 2-3 years."