Working file R3
Retrofit cost Scotland (2026)
Retrofit cost Scotland (2026): regional labour-rate premium, stock mix, regional scheme overlays, indicative deep-retrofit envelope.
Scheme difference
Home Energy Scotland is the principal scheme route: grant plus interest-free loan combination, structurally different from the English BUS plus ECO4 / GBIS mix. Heat-pump grant currently £7,500 plus a further £7,500 interest-free loan envelope on top.
Tenements
Stone tenement retrofit costs are dominated by communal-stair coordination and traditional-construction Path C designation. A typical flat-level deep retrofit lands at £28,000to£50,000(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 R3]
By Oliver Wakefield-Smith, Founder, Digital Signet. Corrections to oliver at digitalsignet dot com.