Community building energy audit, London
Fabric-first audit of a community building delivering a phased decarbonisation plan aligned to available grant funding.
- Location
- London, UK
- Service
- Energy Audits
Unsplash
Energy intensity, monthly index
A high-occupancy community building was operating with ageing systems and rising energy bills, with limited capital but access to grant funding if it could demonstrate a credible plan.
- 01Site visit and fabric assessment (walls, roof, glazing, infiltration)
- 02Review of heating, ventilation and hot-water systems
- 03Occupancy and operational profile analysis
- 04Grant-aligned phased roadmap with cost-versus-impact view
A bespoke operational profile
The building's operational profile — high peaks at prayer and event times, deep troughs in between — meant generic retrofit advice was unhelpful. We focused on a fabric-first assessment so the underlying envelope was addressed before sizing any new plant.
Fabric first, by design
Sizing efficient plant for a leaky building locks in oversizing for decades. Fabric first is not a slogan — it is a sequencing rule.
We assessed external walls, roof, glazing, infiltration paths and acoustic separations. The findings shaped the retrofit sequence: insulation and air-tightness in Phase 1, then systems upgrades in Phase 2 — sized to the improved envelope.
A roadmap that fits the funding
The roadmap was structured to fit available grant windows:
- Phase 1 — fabric package within the trustees' capital budget.
- Phase 2 — systems upgrade contingent on grant award.
- Phase 3 — clean-energy and monitoring layer, linked to a future Performance Dashboard.
The output
The audit gave trustees a credible, evidence-backed case for both internal capital approval and external grant applications, framed in language stakeholders could understand.
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