Warm Homes Plan for UK Landlords 2026 — Energy Efficiency Grants, MEES, and EPC Obligations

Energy Company Obligation (ECO4)

ECO4 is the fourth phase of the Energy Company Obligation, running until March 2026 with successor arrangements under the Warm Homes Plan beyond that date. ECO4 requires large energy suppliers to fund energy efficiency improvements in low-income and fuel-poor households. For private landlords, ECO4 can fund insulation (loft, cavity wall, solid wall), heating system upgrades, and other efficiency measures for properties occupied by tenants who are in receipt of certain means-tested benefits or who have low energy-efficiency ratings.

Landlord eligibility for ECO4 funding depends primarily on the tenant's circumstances rather than the landlord's. Tenants receiving Universal Credit, Housing Benefit, Child Tax Credit, Pension Credit, or certain other means-tested benefits may qualify their property for ECO4 funding. The property must typically be EPC Bands D, E, F, or G to be eligible — already-efficient properties (Band A, B, or C) are unlikely to qualify.

The application route for ECO4 is through a registered ECO installer rather than directly to an energy supplier. Installers registered under the ECO scheme will assess the property, confirm eligibility, manage the energy supplier funding claim, and carry out the works at no cost to the landlord or tenant in most cases. Landlords should not pay upfront for ECO4 works — installers who request payment before works commence may not be legitimately operating under the scheme.

Typical ECO4 funded measures include: loft insulation; cavity wall insulation; solid wall insulation (internal or external); air source heat pump installation; and first-time central heating. The scheme is operationally complex and eligibility is confirmed at assessment stage — the best approach is to contact a registered ECO installer and ask them to assess your property and tenants.

• Tenant-based eligibility: ECO4 eligibility is determined primarily by whether the tenant receives qualifying means-tested benefits
• Low EPC properties targeted: Bands D, E, F, and G properties are the primary target — Band A-C properties rarely qualify
• No landlord upfront cost: ECO4 funded measures are installed at no cost to the landlord or tenant in most cases
• Apply via registered installer: Contact a registered ECO installer to assess eligibility — do not pay upfront
• Qualifying benefits: Universal Credit, Housing Benefit, Child Tax Credit, Pension Credit, and selected others qualify tenants

Great British Insulation Scheme (GBIS)

The Great British Insulation Scheme (GBIS) is a separate scheme from ECO4 with a broader eligibility scope. GBIS funds insulation measures — primarily loft insulation, cavity wall insulation, and solid wall insulation — for properties across a wider income range than ECO4. GBIS has two eligibility tracks: a means-tested track (similar to ECO4 for low-income households) and a general track for EPC Band D or below properties in lower council tax bands.

For private landlords, GBIS is relevant where: (a) tenants are in receipt of means-tested benefits (the means-tested track); or (b) the property is EPC Band D or below and is in a lower council tax band, regardless of the tenant's income (the general track). The general track is the most significant new eligibility route for landlords compared to ECO4 alone.

GBIS funds a single primary insulation measure per property — typically loft or cavity wall insulation. It does not fund heating system replacements. For landlords with older, poorly insulated properties in lower council tax bands, GBIS can provide funded insulation improvements even where tenants do not receive means-tested benefits.

The application route for GBIS is also through registered installers rather than directly to energy suppliers. An installer will assess the property, confirm track eligibility, and manage the funding claim. As with ECO4, landlords should not pay upfront for GBIS works.

• Two eligibility tracks: Means-tested (tenant benefits) and general (EPC Band D or below in lower council tax bands)
• General track is broader: Non-benefit-receiving tenants may still qualify under the general track if the property is Band D or below in a lower council tax band
• Insulation only: GBIS funds insulation measures, not heating system replacements
• Single measure per property: Typically one primary insulation measure (loft or cavity wall) per GBIS application
• Apply via registered installer: Contact a registered GBIS installer for an eligibility assessment

Boiler Upgrade Scheme (BUS)

The Boiler Upgrade Scheme (BUS) provides grants for replacing fossil fuel heating systems with low-carbon alternatives — primarily air source heat pumps (ASHPs) and ground source heat pumps (GSHPs). The BUS grant for an ASHP is currently £7,500 and for a GSHP is £7,500. The grant is paid to the registered installer and deducted from the installation cost.

For private landlords, BUS eligibility requires: (a) the property is in England or Wales; (b) the property has a current EPC with no outstanding recommendation for loft or cavity wall insulation — insulation deficiencies must be remedied before a BUS application can proceed; (c) the installer is registered with the MCS (Microgeneration Certification Scheme); (d) the application is made before the scheme's end date.

The BUS is currently extended under the Warm Homes Plan framework. Landlords with rental properties that still have gas or oil boilers may be able to access the BUS grant to install a heat pump, reducing the property's energy running costs for tenants and improving the EPC rating — which matters for MEES compliance toward the 2030 Band C target.

Practical considerations for landlords: heat pump installation requires adequate space for the outdoor unit; the property should ideally have good insulation (loft and cavity wall insulation already installed) for heat pump efficiency; and heat pump systems typically use low-temperature radiators or underfloor heating rather than standard radiators. Old properties with small radiators may need radiator upgrades alongside the heat pump, increasing the total project cost.

• £7,500 grant: For both air source and ground source heat pump installations under current BUS rates
• EPC insulation recommendation barrier: Outstanding loft or cavity wall insulation recommendations on the EPC must be addressed before a BUS application can proceed
• MCS-registered installer required: Only MCS-registered installers can access BUS grants
• MEES benefit: Heat pump installation typically lifts EPC ratings, supporting compliance with the 2030 Band C MEES target
• Property suitability: Assess available space, insulation quality, and heating distribution system before committing to heat pump installation

Minimum Energy Efficiency Standards (MEES) — Road to EPC Band C by 2030

The current Minimum Energy Efficiency Standards (MEES) require all privately let residential properties in England and Wales to have a minimum EPC rating of Band E. Properties rated F or G cannot legally be let unless a valid exemption is registered on the PRS Exemptions Register. Letting an F or G rated property without a valid exemption carries civil penalties of up to £5,000 per property.

The government's proposed target is to require all privately rented homes to achieve EPC Band C by 2030 (for new tenancies) and 2033 (for all tenancies). This represents a significant upward shift from the current Band E minimum and will require many landlords to invest in energy efficiency improvements for their properties. The Band C target is proposed, not yet enacted as law — but government policy direction is clear and landlords should plan now.

Planning toward Band C: the most impactful measures for raising an EPC rating from Band D or E to Band C are typically: (1) loft insulation to 270mm; (2) cavity wall insulation where the wall construction permits; (3) floor insulation; (4) upgrading from an old boiler to a high-efficiency condensing boiler or heat pump; (5) installing solar panels (which add significant SAP points to the EPC rating). The EPC assessment methodology (SAP) weights heating system efficiency heavily — switching to a heat pump can alone move a property from Band D to Band C in many cases.

Exemptions from MEES exist where: (1) a valid exemption is registered on the PRS Exemptions Register; (2) all relevant improvements would cost more than £3,500 (the cost cap for MEES compliance, known as the 'cost cap exemption'); (3) third-party consent is required (e.g. freeholder, planning authority) and has been refused; (4) there is evidence that the improvements would harm the property. Exemptions last 5 years (except the cost cap exemption, which must be renewed). Landlords are responsible for registering exemptions — unregistered exemptions do not protect against enforcement.

• Current minimum: EPC Band E: F and G properties cannot be let without a registered exemption — civil penalty up to £5,000
• Proposed 2030 target: EPC Band C: Not yet enacted but government policy direction is firm — plan now to avoid a compliance rush
• Biggest EPC gains: Loft insulation, cavity wall insulation, high-efficiency heating (condensing boiler or heat pump), and solar panels
• Cost cap exemption: Where all relevant improvements cost more than £3,500, a cost cap exemption can be registered — but must be renewed every 5 years
• Register exemptions formally: Unregistered exemptions do not protect against MEES enforcement

Combining Schemes: A Landlord's Approach to Energy Efficiency Funding

The most cost-effective approach for landlords is to combine available grant schemes to minimise out-of-pocket expenditure on energy efficiency improvements. A typical combined approach for a Band E or D property occupied by a tenant on means-tested benefits might be: ECO4 for insulation (no cost); BUS for heat pump installation (£7,500 grant deducted from installation cost); and potentially GBIS as an additional insulation measure if the property qualifies under the general track.

For properties not occupied by benefits-eligible tenants, the options are narrower: GBIS general track (if Band D or below in a lower council tax band) for insulation only; and BUS for heat pump installation. The landlord bears the residual cost above the BUS grant.

Landlords with larger portfolios should approach energy efficiency systematically: conduct EPC assessments of all properties; identify those at Band D or E; check tenant benefit status for ECO4 eligibility; engage registered ECO and GBIS installers for free assessments; and apply for BUS grants for qualifying properties. A systematic portfolio approach can reduce the capital required to meet the 2030 Band C target significantly.

Key pitfall: some unregistered companies operate scams targeting landlords and tenants, offering 'free government grants' for energy efficiency works while charging hidden fees or installing poor-quality measures. Always verify that any installer claiming to operate under ECO4, GBIS, or BUS is MCS-registered (for heat pumps) or listed on the Trustmark register (for other insulation measures), and never pay upfront.

• Stack schemes where possible: ECO4 for insulation + BUS for heat pump = maximum funded improvement for Band D/E properties
• GBIS general track: Even without benefit-eligible tenants, a Band D or below property in a lower council tax band may qualify for funded insulation
• Portfolio approach: Identify Band D and E properties first; prioritise ECO4/GBIS-eligible tenancies for funded works; build a capital plan for the residual portfolio
• Verify installer credentials: MCS registration (heat pumps), Trustmark listing (insulation) — never pay upfront for scheme-funded measures
• EPC after works: Always obtain a new EPC after energy efficiency works to confirm the new rating — the improvement must be reflected in an updated EPC for MEES and lettings compliance purposes

Frequently asked questions