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Building remediation cost estimates for thousands of buildings remain uncertain without updates.

Recommendation
Almost eight years on from the Grenfell Tower fire, MHCLG’s latest estimate, in February 2024, was that there were between 9,000 and 12,000 residential buildings in England taller than 11 metres that will need remediating. Based on this modelling, MHCLG estimated that it would cost the Government, developers and building owners (including social housing providers) between £12.6 billion and £22.4 billion to complete the works. The NAO reported in November 2024 that MHCLG intended to refresh its model every six months. But at the time of our evidence session MHCLG had not yet published any further estimates. MHCLG told us it was keen to narrow the range down and that it hoped to publish updates over the course of this year.56
Government Response

A response document is linked to this report, dated 16 May 2025. Response attribution to this conclusion has not been verified. Read the response document.

Addressee Bodies
HM Treasury
Timeline
Recommendation age 1.5 yrs
Report published 21 Mar 2025