Energy Efficiency Grants for Leaseholders and Flat Owners

Energy grants leaseholders flats owners can access are harder to use than those for freehold homeowners, but they do exist. If you own a leasehold flat, you face unique barriers: you may need your freeholder’s consent for external changes, communal areas are outside your control, and many grant schemes were designed with houses in mind. This guide addresses these challenges head on, explaining what grants are available, how to overcome the freeholder consent hurdle, and what the Warm Homes Plan is doing to improve access for flat owners.

What energy efficiency grants are available for leaseholders and flat owners?

• ECO4 – energy suppliers can fund insulation, heating upgrades and draught-proofing for households on qualifying benefits (owner-occupied flats rated EPC D to G, privately rented flats E to G), but the scheme ends on 31 December 2026.
• Warm Homes: Local Grant (England) – council-run grants for owner-occupied or privately rented flats rated EPC D to G where household income is £36,000 or less, someone gets a means-tested benefit, or the flat is in an eligible postcode; caps of £16,600 for efficiency work plus £16,600 for low-carbon heating. (The Great British Insulation Scheme closed on 31 March 2026.)
• Boiler Upgrade Scheme – leaseholders who own their flat and have its own fossil fuel heating can claim £7,500 towards a heat pump in England and Wales; an EPC is no longer strictly required.
• Warm Homes: Social Housing Fund – formerly the Social Housing Decarbonisation Fund, for council and housing association homes in England. Where a leaseholder’s flat is in a block the landlord is upgrading, it may be included for insulation, ventilation and communal low-carbon heating, and the leaseholder doesn’t have to contribute (though the landlord can ask).
• Local authority grants – some councils run top-up schemes for flat owners, including window upgrades and communal heating improvements.

The main challenge for leaseholders is that many improvements, such as external wall insulation or communal boiler replacements, require freeholder consent and a co-ordinated approach across the building. If you are a leaseholder, start with the government’s free Find ways to save energy in your home service (formerly Simple Energy Advice) and your local authority’s energy team. For buildings with multiple flats, a PAS 2035 retrofit co-ordinator can manage the process and help secure funding that covers the whole block.

Why Leaseholders Face Greater Barriers

An estimated 4.90 million homes in England were leasehold in 2024-25, and 69% of them were flats (MHCLG). Leaseholders hold a long lease on their flat, and some also own a share of the freehold, but the structure, roof, external walls and communal areas are typically owned by the freeholder (or managed by a residents’ management company).

This ownership structure creates specific problems for energy efficiency:

• Freeholder consent: You cannot install external wall insulation, replace communal windows, or modify the building’s heating system without the freeholder’s permission
• Section 20 consultation: For works costing more than £250 per leaseholder, the freeholder must follow a formal consultation process under Section 20 of the Landlord and Tenant Act 1985, which takes a minimum of 30 to 60 days
• Split incentives: If the freeholder pays for improvements but the leaseholder benefits through lower bills, the freeholder has little financial incentive to act
• Communal heating systems: Many flats are served by communal boilers or heat networks where individual leaseholders have no control over the heating system
• Building regulations and planning: External changes to purpose-built blocks may require planning permission and building regulations approval, adding cost and complexity
• Multiple owners: Getting agreement from all leaseholders in a block for shared improvements can be difficult and time-consuming

Which Energy Grants Are Available to Leaseholders?

Despite the barriers, several grant schemes are accessible to leaseholders and flat owners:

ECO4

Until it ends on 31 December 2026, ECO4 is available to leaseholders who meet the eligibility criteria (receiving qualifying benefits or referred through local authority flex). Measures that can be installed within your flat without affecting the communal structure are straightforward to fund. These include:

• Internal wall insulation to party walls and external walls within your flat
• Underfloor insulation for ground-floor flats
• Heating system replacement within your flat (where you have an individual boiler)
• Heating controls and smart thermostats
• Draught proofing to windows and doors

For measures affecting the communal structure, such as external wall insulation, roof insulation or communal heating upgrades, the freeholder’s consent is required. ECO4 installers can sometimes work with freeholders to arrange this, but it adds complexity and delay.

Great British Insulation Scheme (closed)

GBIS closed on 31 March 2026 (GOV.UK). It used to fund insulation in flats in council tax bands A to D; in England, the Warm Homes: Local Grant now covers similar work for eligible households.

Warm Homes: Local Grant

In England, the Warm Homes: Local Grant, run by councils under the Warm Homes Plan, can fund upgrades in owner-occupied or privately rented flats rated EPC D to G where household income is £36,000 or less, someone gets a means-tested benefit, or the flat is in an eligible postcode (GOV.UK). Caps are £16,600 for efficiency work plus £16,600 for low-carbon heating, and councils can treat a whole block as one project, including a few flats whose households don’t qualify on income, as long as the block’s average household income is under £36,000 or at least 75% of households have a combined income average of no more than £36,000 (DESNZ guidance). Work on the shared structure still needs the freeholder’s consent.

Boiler Upgrade Scheme (BUS)

The BUS provides up to £7,500 for a heat pump to replace a fossil fuel heating system. Leaseholders with individual gas boilers can apply, but installing a heat pump in a flat raises practical questions about where to locate the outdoor unit. Ground-floor flats with access to a garden or patio are most suitable. Upper-floor flats may face restrictions on mounting outdoor units to the building facade, requiring freeholder consent and potentially planning permission.

0% VAT

The 0% VAT relief on qualifying energy efficiency products, which runs until 31 March 2027, applies equally to leasehold and freehold properties. Whether you are installing solar panels on a flat roof (with consent), internal insulation or heating controls, the VAT saving is the same.

Getting freeholder consent

Getting your freeholder to agree to energy efficiency improvements can be the biggest hurdle. Here are practical approaches:

Check your lease: Review the specific terms of your lease regarding alterations and improvements. Some leases grant blanket permission for internal works but require written consent for anything affecting the external structure. Others require consent for any alterations, though the law generally provides that consent cannot be unreasonably withheld for improvements.

Make a formal request: Write to your freeholder (or their managing agent) requesting consent for the specific improvements. Be specific about what will be done, who will do it, and how it will be funded. Emphasise that the improvements increase the property’s value and reduce running costs for all residents.

Point out the freeholder’s benefit: Energy efficiency improvements increase property values, reduce complaints about damp and cold, and help the freeholder meet any obligations under MEES (Minimum Energy Efficiency Standards) if they also rent out flats in the building.

Propose a whole-building approach: External wall insulation is most cost-effective and aesthetically consistent when applied to the entire building rather than individual flats. Propose that the freeholder looks for funding for the whole block (ECO4 runs until 31 December 2026, and councils’ Warm Homes: Local Grant projects can treat a block as one job), which may make the project financially attractive.

Involve your residents’ association: If you have a residents’ management company or tenants’ association, collective action is more powerful than individual requests. A group of leaseholders requesting improvements is harder for a freeholder to ignore.

Section 20 Consultation: What to Expect

If the freeholder proposes energy efficiency works costing more than £250 per leaseholder (where the cost is passed through service charges), they must follow the Section 20 consultation process:

• Notice of intention: The freeholder sends a notice describing the proposed works, the reasons for them, and inviting written observations within 30 days
• Obtaining estimates: At least two estimates are obtained, including one from a contractor nominated by leaseholders if requested
• Notice of estimates: The freeholder sends a second notice with the estimates, again inviting observations within 30 days
• Decision and works: After considering observations, the freeholder selects a contractor and proceeds with the work

The Section 20 process adds at least two months to the timeline. If the works are fully grant-funded (for example, through ECO4 while it runs) and no cost is passed to leaseholders, Section 20 consultation may not be required. This is a significant advantage of grant funding for communal improvements.

What You Can Do Without Freeholder Consent

Several energy efficiency improvements can typically be made within your flat without requiring the freeholder’s permission:

• Draught proofing: Sealing gaps around windows, doors, letterboxes and floorboards. Low cost and quick
• Heating controls: Installing a smart thermostat, thermostatic radiator valves and a programmer for your individual heating system
• Replacing your boiler: If you have an individual boiler, you can replace it with a more efficient model (check your lease, but most leases permit like-for-like replacement)
• Internal insulation: Adding insulation to internal surfaces of external walls, though this reduces room size slightly and should be done with care to avoid moisture issues
• Secondary glazing: Fitting secondary glazing inside existing windows does not alter the external appearance and usually does not require consent. It is also less expensive than full double glazing replacement
• LED lighting and efficient appliances: Simple changes that reduce electricity consumption

Together these measures can cut your bills, and many can be done as a DIY project or at low cost.

How the Warm Homes Plan Aims to Fix Access Barriers

The Warm Homes Plan accepts that leasehold ownership adds a layer of complexity. Here’s what is in place or promised so far:

• Blocks treated as one project: under the Warm Homes: Local Grant, councils can upgrade a whole block, including a few flats whose households don’t qualify on income, if the block meets the average-income test above
• Shared ownership: these homes are treated as rented, so the housing association (the scheme provider) contributes to the cost
• Work on the barriers: the government says that over this Parliament it will work with relevant organisations on how to remove the remaining barriers to clean heat and other measures in leasehold homes (Warm Homes Plan)
• Freehold and management rights: the Leasehold and Freehold Reform Act 2024 makes it easier and cheaper for more leaseholders to buy their freehold or take over the management of their building
• Loans: the Warm Homes Loan Scheme offers lower-rate loans through participating lenders for solar panels, batteries and heat pumps

To check which grants may fit your leasehold flat, try our grant checker, and to price work you’re allowed to do, request a free quote: up to three approved installers who cover your area may contact you. No charge, no obligation.

Frequently Asked Questions for Leaseholders

Can my freeholder refuse consent for energy efficiency improvements?

Under most leases, the freeholder cannot unreasonably withhold consent for improvements. Energy efficiency upgrades that increase the property’s value and do not damage the building are generally considered reasonable. If your freeholder refuses consent without a valid reason, you may be able to challenge the refusal. Seek legal advice before taking this step.

Can I install solar panels on a leasehold flat?

This depends on your flat’s position and the freeholder’s consent. Top-floor flats with access to the roof may be able to install solar panels, but you will almost certainly need the freeholder’s written consent since the roof is part of the communal structure. Ground-floor flats with private gardens could potentially install ground-mounted panels. In practice, solar panel installation on leasehold flats is uncommon but not impossible. A whole-building solar installation, funded collectively, may be more practical.

My flat has a communal heating system. Can I still get a grant?

You can still access grants for improvements within your flat, such as internal insulation, draught proofing and heating controls. For the communal heating system itself, the freeholder or management company would need to apply. Some ECO4 and Social Housing Decarbonisation Fund (now Warm Homes: Social Housing Fund) projects have funded communal boiler replacements and heat network upgrades in social housing blocks. For private leasehold blocks, communal heating upgrades require the freeholder’s cooperation.

Will energy efficiency improvements affect my service charges?

If the freeholder funds improvements through grants (such as ECO4 or the Warm Homes: Social Housing Fund), there should be no impact on your service charges because the cost is covered externally. If improvements are funded through the service charge or a special levy, the Section 20 consultation process applies and you will have the opportunity to comment before any cost is incurred. Any ongoing maintenance costs for new equipment (such as communal ventilation systems) may be added to service charges.

I am in a shared ownership flat. Which grants can I access?

Shared ownership properties present additional complexity because you part-own and part-rent. Under the Warm Homes: Local Grant, shared ownership homes are treated as rental properties, so the housing association (the scheme provider) is responsible for contributing to the cost (DESNZ guidance). The housing association will need to cooperate, and in many cases they are supportive because the improvements benefit their asset as well as your home. Contact your housing association to discuss before applying for any grants.