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    Equans Warm Homes Wave 3: retrofit scope and fabric upgrade lessons for engineers

    April 10, 2026|

    Reviewed by Tom Sullivan

    Equans Warm Homes Wave 3: retrofit scope and fabric upgrade lessons for engineers

    First reported on The Construction Index

    30 Second Briefing

    Equans has secured Warm Homes: Social Housing Fund Wave 3 work for Babergh and Mid Suffolk district councils, delivering deep retrofit upgrades to 168 socially rented homes by March 2027. The £3m programme covers removal of legacy cavity wall and loft insulation, refilling with modern high‑performance materials, plus replacement windows and doors to lift properties towards at least EPC band C. Previous Wave 2 works on 100 homes, funded by £1.5m matched by the councils, achieved average carbon savings of 1.9 tonnes CO2 per property per year and EPC jumps from F to B in some cases.

    Technical Brief

    • Scope explicitly includes extraction of legacy cavity wall and loft insulation before installing new high‑performance materials.
    • Replacement of existing windows and doors is bundled with insulation works as a single deep‑retrofit package.
    • Equans’ Wave 2 delivery covered 100 properties under the Warm Homes: Social Housing Fund.
    • Councils declared a climate emergency in 2019, setting a policy driver for whole‑stock EPC upgrades.
    • Some Wave 2 homes achieved a 54‑point EPC uplift, moving from band F to band B.
    • Average operational carbon reduction from Wave 2 was 1.9 tonnes CO₂ per dwelling per year.
    • Wave 3 construction phase has already commenced and is programmed to run through to March 2027.

    Our Take

    Equans’ role on WH:SHF Wave 3 in the United Kingdom sits alongside its recent long‑term housing frameworks with Birmingham City Council and Haringey Council, signalling that it is becoming a go‑to contractor for large‑scale retrofit and maintenance of social housing stock rather than just one‑off schemes.

    Within our 822 Infrastructure stories, Equans appears frequently in sustainability‑tagged pieces, suggesting that its parent Bouygues group is using the brand to consolidate UK energy‑efficiency and decarbonisation workstreams, from sci‑tech facilities to council‑owned housing portfolios.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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