Warm Homes Agency
DESNZ · DESNZ_0542_2526-Q2
Department page: Department for Energy Security and Net Zero
| Data as at | Rating | End date | Whole-life cost |
|---|---|---|---|
| March 2026 | Red (NISTA's independent assessment) | 31 December 2027 | £276.69m (in 2024/25 prices) |
Each year’s cost is shown with its price basis. Costs are not compared between years: the March 2024 and March 2025 reports state no price basis, and from March 2026 costs are in 2024/25 prices.
The department’s commentary
This is the department’s own commentary. It may use different prices from the table above, so its figures may not match.
March 2026
Rating: The SRO Delivery Confidence Assessment (DCA) rating at 2025/26 Q4 is Red. The project is operating within a changed organisational context and is undertaking replanning work to ensure that delivery plans remain realistic and achievable within available resources, while prioritising key activities such as the necessary Primary Legislation.
Schedule: The project joined the GMPP in 25/26. The expected project end date is currently 31/12/2027 but this is subject to replanning which is taking place over May to August 2026.
Cost: The Whole Life Costs figure (converted to real prices with base year 24/25) consists of resource costs for 25/26 to 28/29 and capital costs for 25/26 to 29/30, which are subject to funding. The resource costs are the costs to be incurred in establishing the agency, which includes set-up, implementation and transition costs. The capital portion of the whole life cost is made up of the capital required to transition existing IT systems over to the new agency, as well as creating new IT systems.
Names, figures, dates, ratings and commentary are as the department reported them. Where a rating, cost or date is withheld, the file’s wording is shown. Every major project →