'600,000 homes needed'.
That figure is almost the total number of homes that already exist in the whole of Birmingham and Derby - and they need to be constructed by 2021.
The report, called the Regional Spatial Strategies for the West and East Midlands, has highlighted the growing pressure on land availability.
Glen Langham, an associate at Midlands-based property consultants NAI Fuller Peiser, said there are 5,000 hectares of brownfield land that may be able to accommodate 150,000 new homes in the Midlands.
He said: "But the bad news is that a further 450,000 new homes need to be developed.
"It would seem inevitable that more housing will have to be built on greenfield land in the future."