A lot of landlords write off ECO4 the moment they realise their tenant doesn't claim a qualifying benefit like Universal Credit or Pension Credit. That's only half the picture. Every London borough in England and Wales can, in principle, run its own "flexible eligibility" route into ECO4 alongside the national benefits route — a route usually shortened to LA Flex.
We haven't independently confirmed that Hammersmith and Fulham operates a live LA Flex Statement of Intent for landlord referrals — councils publish, update, and occasionally quietly pause these documents, and there's no central register. Before assuming a Hammersmith and Fulham rental is ineligible on the benefits route alone, check with the council directly (search "Hammersmith and Fulham ECO4 Statement of Intent") — the alternative route is worth £5,000–£15,000 of grant value on a single qualifying measure, so a phone call is well-spent time.
Landlords with Hammersmith and Fulham rentals often hold portfolios of 2–5 flats across neighbouring boroughs — the paperwork lives in your name, but the eligibility test is per-property, and the specific Hammersmith and Fulham criteria decide which of those flats can actually access the scheme.