Masterplans to ensure diversity and design codes to ensure quality should be adopted for large housing development sites, as part of Oliver Letwin’s recommendations to boost housing supply.

The MP also proposed new investment models based on continental planning to give councils the power to develop high-quality, large-scale neighbourhoods.

In his final report published alongside the budget yesterday he rowed back from a proposal in his interim report which threatened to break up large sites and hand them to multiple builders.

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