Can a landlord apply?

Yes — landlord-occupier of low-income tenant household can apply via tenant's eligibility. Helps meet MEES requirements for private rented sector.

What if my income just exceeds the threshold?

Try LA Flex — boroughs have local discretion on income limits, especially for households with health conditions or in high-energy-cost homes.

Can I combine ECO4 with BUS?

Yes — ECO4 for insulation prerequisite, BUS for heat pump. Sequenced to maximise total support.

Does Builderr handle ECO4 applications?

We partner with TrustMark-registered installers who can lodge ECO4 applications during the renovation planning phase.

Quick Answer

What is the ECO4 grant and can it cover my London renovation?

ECO4 (Energy Company Obligation 4) funds energy-efficiency upgrades for eligible London households — insulation (loft, cavity, solid wall, underfloor), heating systems, controls and ventilation. Eligibility is means-tested via LA Flex routes (borough-led) or qualifying benefits (Pension Credit, Universal Credit, Income Support, etc.). Grant value varies: £2,000–£18,000 typical, fully funding many basic measures. Scheme runs to March 2026 then ECO5 follows.

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Eligible measures

Loft insulation (top-up to 300mm). Cavity wall insulation. Solid wall insulation (internal or external). Underfloor insulation. Heating system upgrades (efficient boilers, heat pumps). Heating controls (TRVs, smart thermostats, room thermostats). Ventilation (mechanical extract). All works to PAS 2030 standard with TrustMark-registered installer.

Eligibility routes

Benefits route: receiving Pension Credit, Universal Credit, Income Support, Income-related JSA/ESA, Housing Benefit. LA Flex: borough-discretionary criteria — low income, vulnerable household, EPC E/F/G rating. Each London borough publishes its LA Flex Statement of Intent annually.

Application process

Contact an ECO4-registered installer (or your borough's Warm Homes service). They assess eligibility, survey property and apply for funding on your behalf. No upfront homeowner cost for grant portion. Application takes 4–8 weeks. Works completed within 6 months of funding award.

Ready to get started?

Senior consultant call within one business hour. Free desk-based planning assessment. Fixed-scope quote — no provisional sums, no day-rate creep.