The ECO4 scheme closes on 31 December 2026. Most landlords are treating that as the deadline. It is not.
Installer waiting lists for ECO4 works are already stretching past December. The practical window to get improvements completed before the scheme shuts is now, in September, not in the final weeks of the year. Landlords who leave this until November will likely find no available slots and no confirmed replacement scheme to fall back on.
What ECO4 Is and Why It Matters
The Energy Company Obligation 4 (ECO4) is a government scheme that legally requires large energy suppliers to fund energy efficiency improvements in eligible households. For qualifying properties, works including loft insulation, cavity wall insulation, solid wall insulation, boiler replacements and heat pump installation are typically covered at no upfront cost.
For landlords, ECO4 is one of the most direct routes to improving an EPC rating ahead of the 2030 deadline. From 1 October 2030, all privately rented properties in England and Wales must achieve a minimum EPC C rating or face fines of up to £30,000 per property. ECO4 only funds properties currently rated D, E, F or G, so if your property needs to move to C, this scheme is designed exactly for that purpose.
How It Works for Landlords
ECO4 eligibility is primarily assessed at the tenant level. Your tenant needs to meet the qualifying criteria, which are based on receiving certain benefits including Universal Credit, Income Support, Pension Credit, Child Tax Credits, Working Tax Credit and Housing Benefit, among others. Properties can also qualify through the Local Authority Flexible eligibility route for tenants who are not receiving benefits but are on a tight budget.
Landlord consent is required for works to proceed, and in some cases landlords may be asked to contribute towards more expensive measures such as solid wall insulation or heat pump installation.
From initial enquiry to completed installation, the full process typically takes four to ten weeks. The installation works themselves usually take less than three days, but the survey, eligibility checks and funding approval account for most of that window. This is precisely why September is the realistic last moment to start.
What Happens After December
A successor scheme, sometimes called the Warm Homes Obligation, has been consulted on but a confirmed start date has not been announced. Landlords who miss ECO4 may find themselves without an alternative funded route for some time.
The Practical Step to Take Now
Check whether your tenants qualify for ECO4 by contacting your energy supplier, speaking to an ECO-approved installer, or asking your local authority about the flexible eligibility route. If they do, start the process this month.
If you would like a recommendation to a good local ECO-approved installer or accountant, get in touch and we will point you in the right direction.
