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We must retrofit 12 million homes now

Boosting home energy efficiency is vital ahead of the launch of the Warm Homes Plan

Retrofitting must shoot up the agenda if we are to stop energy waste says a construction research body.

With the government’s Warm Homes Plan set for a full unveiling this spring, the Building Research Establishment (BRE) is calling for immediate action to support homeowners in retrofitting 12 million energy-inefficient homes across England.

New data from the government’s English Housing Survey (EHS) shows that, for the first time, more than 50% of homes meet at least Energy Performance Certificate (EPC) band C.

However, while social housing has made strides in energy efficiency, private sector homes—both rented and owner-occupied—lag behind, posing risks to health, finances and the UK’s Net Zero ambitions.

The Warm Homes Plan has already introduced local grants targeting fuel poverty and the future of the £1 billion ECO scheme remains a key concern as its current phase ends in 2026.

But according to BRE’s analysis, the challenge goes beyond low-income households. Wealthier homeowners also struggle with poor insulation and outdated heating, while private rental properties have the highest proportion of EPC F and G homes.

With the NHS spending over £500 million annually treating cold-related illnesses, BRE insists the government must prioritise retrofit advice and financing support.

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