Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, with reference to his Department's press release entitled Warm homes and cheaper bills as government accelerates Plan for Change, published on 7 February 2025, how the figure of the average cost to landlords of complying with the proposals to upgrade their properties was calculated.

Estimates were provided in the consultation stage Options Assessment (DESNZ001(OA)-25-NZBI).

The average cost to landlords of complying with the proposals to upgrade their properties was calculated by dividing the total undiscounted capital expenditure required to meet the standards by the number of properties upgraded. Figures are rounded to the nearest hundred.