The NHS Net Zero Building Standard provides technical guidance to support the development of sustainable, resilient, and energy efficient buildings that meet the needs of patients now and in the future. The Standard will apply to all investments in new buildings and upgrades to existing facilities with a project cost of £25 million or above and are at pre-strategic outline business case approval stage from 1 October 2023 onwards. The Standard also applies to Neighbourhood Health Centre and New Hospital Programme projects.