Who Qualifies for a Council Tenant Insulation Grant
If you are a council tenant wondering whether you can get free or heavily subsidised insulation, the answer depends on your home’s energy efficiency and your household income. The main route is the Great British Insulation Scheme (GBIS), which is administered by Ofgem and the Department for Energy Security and Net Zero (DESNZ).
Savings range from £200 to £600 per year depending on the insulation type.
- Qualify if your EPC is D, E, F or G and you receive a means-tested benefit.
- The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing.
- Loft insulation saves £200-£300 yearly for a typical semi-detached house.
- Your council must agree to installation for the grant to apply.
- Solid wall insulation offers the biggest annual savings at £400-£600.
- Who Qualifies for a Council Tenant Insulation Grant
- What the Grant Covers Insulation Types and Average Savings
- Quick Numbers Grant Values, EPC Thresholds, and Installation Timelines
- Who Does Not Qualify Exclusions and Property Types
- How to Confirm Your Eligibility Step-by-Step Process
- Verifying Your Installer MCS, TrustMark, and Gas Safe Registration
- What to Do if Your Council Refuses the Grant
You likely qualify if your property has an Energy Performance Certificate (EPC) rating of D, E, F, or G and you receive a means-tested benefit such as Universal Credit, Pension Credit, or Housing Benefit. The grant targets the least energy-efficient homes, so properties rated C or above are excluded (GOV.UK, Great British Insulation Scheme, 2026).
Council tenants in homes with solid walls, uninsulated lofts, or unfilled cavity walls may qualify, but the landlord (your council) must agree to the installation. The property must also fall within a qualifying council tax band: A to D in England, or A to E in Scotland and Wales (DESNZ, Scheme Eligibility Guidance, 2026).
What the Grant Covers Insulation Types and Average Savings
The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing. However, only one insulation measure is funded per household under this scheme.
Annual savings for a typical semi-detached house are significant. Loft insulation topped up to 270mm saves around £200 to £300 per year. Cavity wall insulation saves £250 to £350, and solid wall insulation saves £400 to £600 annually (Energy Saving Trust, Insulation Savings Calculator, 2026).
Costs to you as a council tenant are zero if your council agrees to the work. The grant pays the installer directly. If your council does not participate, you cannot access the grant through this route. The grant does not cover secondary measures like draught-proofing or heating system upgrades, though those may be available under the separate Energy Company Obligation (ECO4) scheme.
Quick Numbers Grant Values, EPC Thresholds, and Installation Timelines
| Measure | Average grant value (per property) | Minimum EPC rating to qualify | Average installation time (days) | Typical annual saving (semi-detached) |
|---|---|---|---|---|
| Loft insulation (top-up) | £500–£1,000 | D or below | 1–2 | £200–£300 |
| Cavity wall insulation | £800–£1,500 | D or below | 1 | £250–£350 |
| Solid wall insulation (internal) | £3,000–£5,000 | D or below | 3–5 | £400–£600 |
| Solid wall insulation (external) | £6,000–£10,000 | D or below | 5–10 | £400–£600 |
Sources: Ofgem GBIS Cost Caps per Measure (2026), Energy Saving Trust Insulation Savings (2026), MCS Installation Standards (2026).
Who Does Not Qualify Exclusions and Property Types
The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing. The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing.
You are also excluded if your home already has adequate insulation, such as a loft with 270mm or more of insulation or cavity walls that are already filled. The only exception is if a survey confirms the existing insulation is defective.
The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing. The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing.
How to Confirm Your Eligibility Step-by-Step Process
Follow these five steps to confirm whether you qualify for a council tenant insulation grant.
Step 1: Check your EPC rating. You can find it on the government’s EPC register or request it from your council (GOV.UK, Find an energy certificate).
Step 2: Confirm your council tax band using the government’s council tax band checker (GOV.UK, Council Tax bands).
Step 3: Verify that you receive a qualifying benefit. The full list is on the GOV.UK Great British Insulation Scheme page (2026).
Step 4: Contact your council’s housing or energy team. They must agree to the installation and commission a survey before any work can begin.
The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing.
Verifying Your Installer MCS, TrustMark, and Gas Safe Registration
All insulation work under the GBIS must be carried out by an installer registered with the Microgeneration Certification Scheme (MCS). You can check the MCS installer database at mcsinstaller.com (MCS, Find an Installer).
The installer must also hold TrustMark registration, which covers consumer protection and quality standards (TrustMark, Find a TrustMark registered business). For cavity wall insulation specifically, the installer must be registered with the Cavity Wall Insulation Guarantee Agency (CIGA) or a similar body.
Gas Safe Register is not relevant for insulation work, as it applies to gas heating installations only. However, it may be needed if your council combines insulation with a boiler replacement under the ECO4 scheme (Ofgem, GBIS Installer Requirements, 2026).
What to Do if Your Council Refuses the Grant
If your council declines to participate in the GBIS, you cannot access the insulation grant through your tenancy, as the grant is landlord-led. However, you have other options.
Ask your council to apply for ECO4 flexible eligibility, also called “LA Flex,” on your behalf. This may cover insulation even if you do not receive benefits (DESNZ, ECO4 Flex Guidance).
You may also qualify for the Energy Company Obligation (ECO4) directly if you receive a qualifying benefit. This covers insulation and heating but again requires landlord permission (GOV.UK, Energy Company Obligation, 2026).
Contact the Citizens Advice energy team on 0808 223 1133 or your local energy advice centre for help challenging a refusal (Citizens Advice, Energy advice).
How to challenge a council’s refusal of energy efficiency improvements
ECO4 flexible eligibility for council tenants explained
Frequently Asked Questions
The main grant is the Great British Insulation Scheme (GBIS), run by Ofgem and DESNZ. It provides free or heavily subsidised insulation to qualifying council tenants.
Yes, if your property has an EPC rating of D, E, F or G and you receive Universal Credit, Pension Credit or Housing Benefit. Your council must also agree to the installation.
Annual savings depend on the measure: loft insulation saves £200-£300, cavity wall insulation saves £250-£350, and solid wall insulation saves £400-£600 (Energy Saving Trust, 2026).
The grant covers loft insulation, cavity wall insulation, solid wall insulation (internal or external), and underfloor insulation. Only one measure per household is funded.
No, your landlord (the council) must agree to the installation. If they do not participate, you cannot access the grant through the Great British Insulation Scheme.
