Remediation Portfolio

Rating: While delivery is set to accelerate, with more buildings expected to start remediation during this Parliament than prior to 2024/25, the SRO Delivery Confidence Assessment (DCA) rating at 25/26 Q4 decreased to Red. This reflects risks to pace and affordability which are constraining delivery against planned timelines, including higher-than-anticipated social housing volumes, Building Safety Regulator constraints impacting progression of works, the need to accelerate delivery through developers and anticipated construction cost inflation. As a result, delivery against the Remediation Acceleration Plan and within the 2025 Full Business Case assumptions remains challenging. Targeted action is underway, including increasing Gateway 2 throughput, strengthening delivery planning with social sector partners, and working with developers to improve pace. Developer cost recovery activity is progressing, alongside preparations for the Building Safety Levy launch (October 2026). As of March 2026, 4,322 buildings over 11 metres have been identified with unsafe cladding, representing an estimated 50-76% of all buildings that will require remediation as part of MHCLG’s remediation programmes. For the 4,322 buildings identified with unsafe cladding, remediation has started on 2,399, including 1,531 that have been completed and 868 now on site. A further 1,923 buildings are in the programme but have not yet started on site.

Schedule: There has been no change to the schedule for the programme.

Cost: The WLC has increased by £104m following the Spending Review outcome and adjustments for inflation in real terms. This update includes a lower estimated number of buildings but higher per building costs, which has slightly increased the estimate.

Source: NISTA Major Projects Annual Report 2025-26 (data)

Rating: Compared to financial year 23/24-Q4, the Infrastructure Project Authority's Delivery Confidence Assessment rating at 24/25-Q4 remained at AMBER. This is primarily due to the following factors‚ Delivery confidence remains amber due to the need to accelerate the pace of remediation, progress developer debt recovery and implement the Building Safety Levy. As of April 2025, there are 5,052 residential buildings 11 metres and over in height identified with unsafe cladding with 1652 having completed remediation works. Identification of 11-18m buildings requiring remediation is continuing, with over 500 more 11-18m buildings monitored compared to a year ago. The portfolio has published performance targets and is delivering its Remediation Acceleration Plan, with a public update on progress and further interventions expected following the 2025 Spending Review this summer.

Schedule: Compared to financial year 23/24-Q4, the project's end-date at 24/25-Q4 remained at 31/03/2036. This is primarily due to the following factors‚ The end date remains at 31/03/203.

Cost: Compared to financial year 23/24-Q4, the project's departmentally agreed Whole Life Cost at 24/25-Q4 (measured in £m) remained at 9915. This is primarily due to the following factors‚ The modelled whole life cost of the portfolio has not been updated in this report due to uncertainty surrounding the Spending Review outcome. This forecast will be updated once the Spending Review outcome has been confirmed.

Source: NISTA Annual Report 2024-25 (data)

Rating: The Infrastructure Project Authority's Delivery Confidence Assessment rating at 23/24-Q4 is Amber. This is primarily due to the following factors. As at March 24: We continue to assess the delivery confidence of the programme as amber._x000D_ _x000D_ The programme continues to focus on the IPA recommendations to maintain delivery confidence in addressing unsafe cladding remediation.

Schedule: The project's end-date at 23/24-Q4 is 2036-03-31. This is primarily due to the following factors. As at March 24: The project's end-date is March 2036.

Cost: The project's departmental-agree Whole Life Cost at 23/24-Q4 is 9915m. This is primarily due to the following factors. Whole Life Costs have not changed.

Source: IPA Annual Report 2023-24 (data)