UK net zero carbon standard accepts passive house as compliance route
A render of Alec French Architects’ Lyde Green Community School, a CLT primary school in South Gloucestershire built to the passive house standard, which performed well in the pilot programme for the UK Net Zero Carbon Building Standard.
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UK net zero carbon standard accepts passive house as compliance route

Passive house certification has been formally recognised as a deemed-to-satisfy route within the UK Net Zero Carbon Buildings Standard at practical completion, in a move which recognises the reliability of the passive house standard as a way delivering significant real world carbon savings.

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Under the arrangement, passive house certification can be used to demonstrate that a building meets the standard's space heating requirements. It can also serve as a key component of evidence for the standard's operational energy and onsite renewable energy generation requirements, with the aim of reducing duplicate assessments for project teams pursuing both schemes.

Sarah Lewis, co-director of the Passivhaus Trust, which worked closely with the standard's developers to establish the pathway, said: "The NZCBS sets out carbon and energy performance criteria to align buildings with the UK's 1.5C carbon trajectory, and this milestone enables passive house projects to demonstrate compliance with key elements of those requirements."

Lewis says passive house is underpinned by more than 35 years of peer-reviewed evidence demonstrating deep reductions in operational energy and carbon, alongside high comfort and indoor air quality.

"This alignment between the established passive house methodology and the NZCBS's robust performance expectations provides confidence to designers, developers, and occupants that net zero ambitions can be translated into measurable and healthy outcomes," she said.

Katie Clemence-Jackson, chief executive of the UK Net Zero Carbon Buildings Standard, says the standard's emphasis on in-use performance makes passive house a natural fit.

"It follows that the standard's principles are aligned with passive house certification, which addresses the performance gap between modelled and in-use energy consumption," she said. "Not only will this reduce the need for duplicate assessments, but we also anticipate that the robust methodology and quality assurance provided through passive house will support project teams in meeting the standard's limits."

At practical completion, project teams can use the new optional on-track checks to demonstrate compliance. Passive house certification now forms a recognised route within this process.

Further detail is available in Version 1 of the standard, which was published on 10 March.

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