Working file R4
Retrofit cost East of England (UK 2026)
Retrofit cost East of England (UK 2026): regional labour-rate premium, stock mix, regional scheme overlays, indicative deep-retrofit envelope.
Off-gas share
The East of England has a meaningful rural off-gas cohort. Oil and LPG households see the strongest case for an ASHP plus BUS; the £9,000 BUS rate from July 2026 for oil and LPG retrofits sharpens that case further.
Indicative envelope
above 1930s semi phased deep retrofit: £33,000to£52,000(pre-grant).
Surveyed 1 October 2026. Ofgem cap for 1 October to 31 December 2026 applied (gas 7.97p, elec 26.32p, gas standing 29.68p, elec standing 54.83p). Next scheduled review 25 November 2026 (January cap announcement). [ref R4]
By Oliver Wakefield-Smith, Founder, Digital Signet. Corrections to oliver at digitalsignet dot com.