The number of houses planned for Green Belt land has nearly doubled over the past year, according to new figures.
Some 150,000 homes and 1,000 hectares of mines and commercial premises are being proposed for the areas, research by the Campaign to Protect Rural England found.
Previous analysis suggested just 81,000 homes were planned in August 2012.
The group said the figures raised serious concerns about whether ministers were keeping their promises to safeguard the Green Belt.
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