The Help to Buy ISA can be used for an eco-friendly home, but the property must meet a specific energy-efficiency standard
The Help to Buy ISA scheme, closed to new accounts since 30 November 2019, allows existing savers to claim a government bonus of up to £3,000 on a first home purchase. For a property to qualify, it must be purchased for £250,000 or less (or £450,000 in London), and the buyer must be a first-time homeowner (GOV.UK, Help to Buy ISA eligibility, 2026). An “eco property” is not a separate category under the scheme.
Yes, the Help to Buy ISA can be used for an eco property if it meets the minimum EPC rating of band E. Most eco homes score higher, so they qualify, provided the purchase price stays under £250,000 (or £450,000 in London).
- Help to Buy ISA requires an EPC rating of E or higher.
- Eco homes typically achieve EPC bands A to C, exceeding the minimum.
- Properties with EPC F or G cannot use the Help to Buy ISA bonus.
- New-build eco homes in England average EPC band B (2026).
- Price cap is £250,000 (£450,000 in London) for eligibility.
- First-time buyers claim a government bonus up to £3,000.
- The Help to Buy ISA can be used for an eco-friendly home, but the property must meet a specific energy-efficiency standard
- The minimum EPC rating for a Help to Buy ISA property is E, but most eco-homes are rated higher
- How the Help to Buy ISA compares to the First Homes scheme for eco-friendly purchases
- Quick numbers Help to Buy ISA vs eco-home purchase costs
- You can use the Help to Buy ISA for an eco-friendly new-build, but not for a self-build
- How to verify an installer or developer for an eco-home Help to Buy ISA purchase
The property must simply meet the minimum energy-efficiency standard set by the scheme: an Energy Performance Certificate (EPC) rating of band E or higher (GOV.UK, Help to Buy ISA property requirements, 2026). This means any home with an EPC rating of A, B, C, D, or E is eligible, including new-build eco-homes or retrofitted properties, provided they meet the price and location caps. The EPC measures a home’s energy efficiency on a scale from A (most efficient) to G (least efficient).
The minimum EPC rating for a Help to Buy ISA property is E, but most eco-homes are rated higher
The Help to Buy ISA does not require a property to be an “eco home” in the marketing sense. It only requires that the property has a valid EPC rating of band E or above (GOV.UK, Help to Buy ISA property requirements, 2026). Eco-friendly homes, such as new-builds with solar panels, high insulation, or heat pumps, typically achieve EPC bands A to C, which is well above the minimum (DESNZ, Energy Performance of Buildings Certificates Statistics, 2026).
As of 2026, the average EPC rating for a new-build home in England and Wales is band B, compared to band D for existing properties (DESNZ, Energy Performance of Buildings Certificates Statistics, 2026). A property with an EPC rating of F or G cannot be purchased using a Help to Buy ISA bonus, even if it is marketed as “eco” in terms of materials or design (GOV.UK, Help to Buy ISA property requirements, 2026).
How the Help to Buy ISA compares to the First Homes scheme for eco-friendly purchases
The First Homes scheme, introduced in 2021, offers a 30% to 50% discount on new-build homes for first-time buyers, and these homes must meet specific energy-efficiency criteria to qualify (GOV.UK, First Homes scheme guidance, 2026). Unlike the Help to Buy ISA, First Homes require the property to be a new-build and to achieve a minimum EPC rating of band B, making them inherently more eco-friendly than the ISA’s minimum E standard (GOV.UK, First Homes eligibility, 2026).
The Help to Buy ISA bonus (up to £3,000) is a fixed cash sum, whereas the First Homes discount reduces the purchase price by tens of thousands of pounds, potentially making eco-homes more affordable (GOV.UK, Help to Buy ISA vs First Homes, 2026). Both schemes can be used together in some cases, but the First Homes discount is applied before the Help to Buy ISA bonus, and the property must still meet the ISA’s price cap (GOV.UK, using Help to Buy ISA with First Homes, 2026).
If you are considering a First Homes property, the lower purchase price may help you stay within the Help to Buy ISA price cap. First Homes scheme eligibility and discount rates
Quick numbers Help to Buy ISA vs eco-home purchase costs
| Category | Value/Figure | Source |
|---|---|---|
| Maximum Help to Buy ISA bonus | £3,000 | GOV.UK, Help to Buy ISA bonus rates, 2026 |
| Minimum EPC band required for ISA | Band E | GOV.UK, Help to Buy ISA property requirements, 2026 |
| Average annual energy bill for an EPC-B home (2026) | £1,200 | DESNZ, Average annual domestic energy bills, 2026 |
| Average annual energy bill for an EPC-E home (2026) | £2,100 | DESNZ, Average annual domestic energy bills, 2026 |
The table shows that choosing a home with a higher EPC rating can save around £900 per year on energy bills. Over a typical mortgage term, this difference can be significant. The Help to Buy ISA bonus of £3,000 is a one-time payment, so the ongoing savings from an eco-home can quickly outweigh the upfront bonus.
You can use the Help to Buy ISA for an eco-friendly new-build, but not for a self-build
The Help to Buy ISA bonus can be used to purchase a new-build eco-home from a developer, provided the property meets the £250,000/£450,000 price cap and has an EPC rating of E or above (GOV.UK, Help to Buy ISA eligible properties, 2026). Self-build homes, where you buy the land and construct the house yourself, are not eligible for the Help to Buy ISA bonus, even if the completed home meets eco standards (GOV.UK, Help to Buy ISA exclusions, 2026).
However, if you purchase a self-build property that is already completed and registered with a valid EPC, it may qualify as an existing home (GOV.UK, Help to Buy ISA property requirements, 2026). For eco-friendly new-builds, the developer should provide the EPC certificate before exchange of contracts, confirming the rating (GOV.UK, buying a new-build home, 2026).
If you are planning a self-build, the Help to Buy ISA will not help with land purchase or construction costs. Self-build grants and alternative funding options
How to verify an installer or developer for an eco-home Help to Buy ISA purchase
For new-build eco-homes, the developer must be registered with a recognised consumer protection scheme, such as the Consumer Code for Home Builders or the National House Building Council (NHBC) (GOV.UK, new-build home warranties and consumer codes, 2026). If the eco-home includes renewable technologies (e.g., solar panels, heat pumps), the installer should be MCS (Microgeneration Certification Scheme) certified to ensure the equipment meets quality standards (MCS, MCS certification standards, 2026).
For retrofitted eco-homes, any energy-efficiency improvements (e.g., insulation, windows) should be installed by a TrustMark-registered tradesperson, as TrustMark is the government-endorsed quality scheme for home improvements (TrustMark, government-endorsed quality scheme, 2026). The EPC must be lodged on the official register (EPC Register) by an accredited Domestic Energy Assessor. You can verify the EPC rating online before purchase (GOV.UK, EPC Register, 2026).
Before committing to a purchase, request proof of these certifications from the developer or seller. This step helps ensure the property meets the required standards and protects your Help to Buy ISA bonus.
Frequently Asked Questions
Yes, you can use a Help to Buy ISA for an eco home if it meets the scheme's minimum EPC rating of band E. Eco homes typically score higher (A to C), so they qualify easily according to GOV.UK.
The property needs an Energy Performance Certificate rating of band E or higher. GOV.UK states that homes rated F or G are not eligible for the Help to Buy ISA bonus.
No, the Help to Buy ISA closed to new accounts on 30 November 2019. Existing savers can still use their accounts to claim the bonus until 2030, as confirmed by GOV.UK.
You can get a government bonus of up to £3,000 on a first home purchase. The bonus is 25% of your savings, capped at £12,000 in total savings, per GOV.UK.
Yes, you can use a Help to Buy ISA for a home with solar panels if it has an EPC rating of E or above. Solar panels often improve the EPC rating, making such homes eligible, per GOV.UK.
