The environmental credentials of this year’s Stirling Prize winner have been called into question by the architect of one of the defeated projects.

Matthew Barnett Howland said whole-life carbon should be a more important consideration than achieving Passivhaus accreditation.

He was speaking at the Stirling Prize party after Mikhail Riches’ Goldsmith Street council housing in Norwich was named the winner and hailed for being Passivhaus-compliant as well as 100% social housing.

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