Home Insulation Grants in Scotland

Insulation grants in Scotland: the honest position in 2026

Scotland runs its own home-energy funding, separate from the schemes you may have read about for England. If you own and live in a home in Scotland, the main routes to help with insulation are the Home Energy Scotland Grant & Loan, Warmer Homes Scotland, your council's Area Based Schemes, and the Great Britain-wide ECO4 obligation on energy suppliers. There is a single, free front door for most of this: Home Energy Scotland on 0808 808 2282.

This site is an independent guide. We install nothing, run no grant, and are not government-approved. Applying to the real schemes through the official channels below is always free, so never pay an upfront fee to a cold-caller who promises a "free grant". Use our eligibility checker to get a feel for which route fits, then apply through the official gateway.

Home Energy Scotland Grant & Loan

The Home Energy Scotland (HES) Grant & Loan is the flagship Scottish scheme for owner-occupiers. Its stand-out feature is that there is no benefits test. You do not need to be on Universal Credit or Pension Credit to qualify, which makes it one of the few substantial routes open to able-to-pay households as well as those on lower incomes.

The grant covers up to 75% of the cost of eligible energy-efficiency measures, capped at £7,500. Homes in remote rural areas and on the islands get a further £1,500 uplift, taking the energy-efficiency grant to up to £9,000. On top of that, up to £7,500 is available for clean heating (such as an air source heat pump), so the combined grant can reach up to £15,000, or up to £18,000 in rural and island locations. An interest-free loan can sit alongside the grant to help cover the balance you contribute.

To qualify you must own and live in the home, and the measure you want funded must be recommended in an EPC or a Home Energy Scotland home energy report. That EPC-first requirement matters: it is worth checking your current EPC before you apply, because nearly every insulation grant is gated on the property having room to improve.

Per-measure grant caps under the HES Grant

The HES Grant pays a share of each measure up to a defined cap. The combined caps are:

Measure	Combined grant cap
Solid wall insulation (internal or external)	£10,000
Flat-roof or room-in-roof insulation	£4,000
Loft insulation	£2,000
Cavity wall insulation	£2,000
Floor insulation	£2,000
Draughtproofing	£500
Spray-foam loft insulation	Excluded (not funded)

Note the exclusion of spray foam. Spray-foam loft insulation is a known mis-selling trap in the UK: it can cause problems when you come to sell or remortgage, and the HES Grant will not fund it. If a doorstep or telephone seller pushes spray foam at you, treat it as a red flag and check with Home Energy Scotland first. Our page on insulation grant scams covers the warning signs in more detail.

You can read the full official terms on the Scottish Government's guidance at mygov.scot.

Warmer Homes Scotland

Warmer Homes Scotland is the Scottish Government's fuel-poverty programme, delivered by Warmworks. Where the HES Grant asks you to contribute a share, Warmer Homes Scotland is effectively free for eligible households, because the Scottish Government usually meets all of the costs of the recommended measures. It can fund insulation and heating improvements together.

Eligibility is tighter and is aimed at older and more vulnerable homeowners and private tenants. In broad terms you may qualify if you are aged 75 or over with no working central heating, are terminally ill, or receive a qualifying passport (means-tested) benefit, alongside the scheme's property conditions. Because the exact rules are assessed case by case, the honest step is to phone Home Energy Scotland and be referred for a check rather than assume.

If you are on a means-tested benefit, it is worth reading how those benefits interact with funding on our ECO4 explainer and our guide to whether insulation grants are really free, since Warmer Homes Scotland is one of the genuinely fully funded routes when you qualify.

Area Based Schemes (ABS)

Area Based Schemes are run by your local council and are targeted at particular streets, estates or property types, often where there is a concentration of hard-to-treat homes such as solid-wall tenements or off-gas properties. You cannot self-apply to an ABS in the way you apply to the HES Grant; instead the council identifies eligible areas and invites households in. If your area is being treated, an ABS can substantially reduce or remove the cost of insulation.

The practical move is to mention your postcode and property type when you speak to Home Energy Scotland, who can tell you whether your council has an active scheme in your area, and to keep an eye on communications from your local authority.

ECO4 in Scotland

ECO4, the Energy Company Obligation, applies across Great Britain, so Scottish households can use it as well. It is delivered by the larger energy suppliers, not by Ofgem or by us, and it takes a "fabric first" whole-house approach. ECO4 has been extended by nine months and now runs to 31 December 2026, and there is no ECO5 to follow it, so this is a closing window rather than a permanent scheme. Suppliers may stop taking new referrals before the end date, so acting sooner is sensible if this is your route.

ECO4 is benefits-led. You may qualify if you receive one of a list of means-tested benefits (including Universal Credit, Pension Guarantee Credit, Income Support, income-based JSA, income-related ESA, Housing Benefit, Working Tax Credit and Child Tax Credit). If you are not on benefits, the ECO4 Flex (LA Flex) route lets your council refer low-income households under its published Statement of Intent. Owner-occupiers need an EPC in band D to G; private and social tenants need an EPC in band E to G, and private tenants need the owner's permission. Our dedicated ECO4 page and the ECO4 vs GBIS comparison explain the detail. Note that the Great British Insulation Scheme (GBIS) closed on 31 March 2026 and has no successor, so ignore any site still presenting it as open.

Which Scottish route fits you?

Scheme	Who it is for	Roughly how much	Benefits test?
Home Energy Scotland Grant & Loan	Owner-occupiers	75% up to £7,500 (+£1,500 rural), plus loan	No
Warmer Homes Scotland	Older or vulnerable, passport-benefit households	Usually fully funded	Yes (or age 75+ / terminal illness)
Area Based Schemes	Households in a council-targeted area	Reduced or free (varies)	Area-targeted, not self-apply
ECO4 (to 31 Dec 2026)	Benefit recipients (or LA Flex)	Measure top-ups; contribution possible on solid wall	Yes (or LA Flex)

If you are not on benefits, do not assume you are shut out. The HES Grant has no benefits test at all, and the 0% VAT relief on qualifying insulation in Great Britain (see below) reduces the cost of a self-funded job even without a grant. Our page on insulation grants if you are not on benefits pulls these options together.

What insulation can be funded, and what it usually costs

Understanding the unsubsidised cost helps you see where a grant matters most. Loft insulation from bare (270mm) costs around £900 and is the cheapest, most-funded measure, which is why "free loft" is such a common hook. Cavity wall insulation costs around £2,700, and is only possible where the walls have suitable, unfilled cavities in good condition.

The big-ticket items are solid walls. Internal solid-wall insulation runs to about £12,000 and external wall insulation to about £18,000, which is exactly where the HES Grant's £10,000 solid-wall cap and an ECO4 contribution make the biggest difference. Many older Scottish homes and tenements are solid-walled, so this is a common and worthwhile route. Underfloor insulation typically costs £1,400 to £2,500, and room-in-roof insulation £1,500 to £10,000. Draughtproofing (up to about £500) is normally only funded alongside a primary measure. Explore the full menu on our grants and funding hub and estimate figures on the cost page.

0% VAT on insulation

In Great Britain, installing qualifying insulation has been at 0% VAT under the Energy-Saving Materials relief. That is a genuine saving even if you do not qualify for a grant and choose to self-fund, and it applies in Scotland. It is not permanent and is not tax advice, so confirm the current rate and end date against HMRC's VAT Notice 708/6 before you rely on it.

Get the quality right: TrustMark, PAS 2035 and scam awareness

Grant-funded insulation must be done to a proper standard. Insist on a TrustMark-registered installer working to PAS 2035 (retrofit) and PAS 2030 (installation). A compliant job starts with a retrofit assessment and a Retrofit Coordinator; if an installer skips the assessment and simply sells you a single measure, that is a warning sign. You can check a firm on trustmark.org.uk.

Quality has been a real problem. The National Audit Office reported in October 2025 that around 98% of external-wall-insulation jobs under ECO4 and GBIS had defects, which triggered free TrustMark "Find & Fix" audits. If you have had grant-funded external wall insulation recently, it is worth checking whether your install needs auditing. Genuine schemes are applied for through Home Energy Scotland, your council, an accredited installer, or the obligated energy suppliers, never through an unsolicited text or doorstep seller. Never pay upfront and never let work start before you have written grant approval. Our scams and myths page and how to apply guide walk through doing this safely.

How to apply in Scotland

For almost everything above, the single free gateway is Home Energy Scotland on 0808 808 2282. They provide impartial advice, check which schemes you qualify for, and refer you into the HES Grant & Loan, Warmer Homes Scotland (delivered by Warmworks) or any relevant Area Based Scheme. For ECO4 you approach an obligated energy supplier or accredited installer, or ask your council about ECO4 Flex.

A sensible order is: check your EPC, use our eligibility checker, then call Home Energy Scotland or send us an enquiry through the contact form and we will point you to the right official channel. If you would like an installer to quote for a measure once you know your route, our quote page can help. You can read the official Scottish guidance at mygov.scot.

Scotland's funding is genuinely more generous than many homeowners realise, and the no-benefits-test HES Grant opens the door to households who assume they will not qualify. Grants are still gated by real eligibility, EPC and property conditions, and high-cost measures like solid wall may need a contribution, so treat "free" claims with caution and start with the honest, official gateway.