£15bn and the end of ECO4 — reading the small print of the Warm Homes Plan

Devonshires' briefing on the Warm Homes Plan does what legal briefings usefully do: it reads the whole thing rather than the press release. Alongside the £15bn and the "biggest home upgrade programme in British history" framing sits a quieter fact.

Why this is a cliff edge rather than a transition

ECO4 is not a grant you apply for at a desk. It is an obligation placed on energy suppliers, delivered through installers who identify eligible households and fund deep measures — often the whole job. For a household on qualifying benefits in a poorly rated home, it has been the deepest support available by some distance.

Its replacement is structurally different: direct grant funding, delivered through a new agency and through councils. That may well be better in the long run. In the short run it means the delivery chains built around ECO4 will wind down, and the people who ran them will move on to other work.

If you think you qualify, the practical advice is unusually blunt: this year is different. There is no carry-over, so an intention to have work done is worth nothing. It needs to be genuinely in train.

The other numbers in the plan

• £4.4bn in direct grants for installations.
• A £600m Warm Homes Fund.
• A Heat Training Grant of around £7m a year from 2026 to 2029, aimed squarely at the skills shortage that is already delaying delivery.
• New standards for both privately and socially rented homes.

What to do about it

Check eligibility now rather than in the autumn. Your energy supplier and your local authority are both routes in, and the Warm Homes Local Grant — up to £15,000 for low-income households — is administered by councils, so your borough is the place to ask.

And whichever route you take, the assessment comes first. Nothing in any of these schemes pays out against a quote alone.

Book an EPC for £69, or see what a retrofit assessment covers if you are considering deeper work.