Park home owners in England can access insulation grants through the Great British Insulation Scheme, offering fully funded cavity wall and loft insulation, but eligibility depends on your home’s Energy Performance Certificate (EPC) rating and your income (GOV.UK, 2026).
Park homes, often classed as mobile homes or caravans, have unique construction that limits standard insulation measures. The key variable is whether your park home has cavity walls or a loft space — many do not, so grants may cover solid wall insulation or underfloor insulation instead. The Great British Insulation Scheme (GBIS) targets homes with an EPC rating of D or below, and park homes with EPC bands E, F, or G are most likely to qualify. If your home is on a permanent residential park and you pay Council Tax, it may be eligible.
Great British Insulation Scheme covers park homes
The Great British Insulation Scheme, run by Ofgem, provides fully funded or heavily subsidised insulation for low-income households and those in the least energy-efficient homes. For park homes, this typically includes cavity wall insulation, loft insulation, and solid wall insulation where applicable. The scheme covers up to 100% of installation costs for eligible households (Ofgem, 2026). To apply, your household income must be below £31,000 a year, or you must be receiving certain benefits such as Pension Credit or Universal Credit.
ECO4 grants also fund park home insulation
The Energy Company Obligation (ECO4) scheme offers grants for park home insulation, including underfloor insulation, which is common in park homes with timber floors. ECO4 targets low-income and vulnerable households, covering insulation measures that improve EPC ratings to band C or above. Park homes with EPC ratings below band D are prioritised (GOV.UK, 2026). Funding is provided by energy suppliers, and installation must be carried out by TrustMark-registered installers. You do not need to own the park home — tenants on permanent sites may also qualify.
Check eligibility through your energy supplier
To access park home insulation grants in 2026, contact your energy supplier directly or use the government’s Simple Energy Advice service. You will need your EPC certificate and proof of income or benefits. If your park home has no loft or cavity walls, ask about solid wall insulation or underfloor insulation — these are covered under ECO4. The Energy Saving Trust notes that insulating a park home can reduce heating bills by up to £400 a year (Energy Saving Trust, 2026). Grants are limited, so apply early.
A worked example
A typical 1970s park home in Devon with solid walls and an EPC rating of F costs around £4,500 for underfloor and solid wall insulation. The Great British Insulation Scheme covers the full cost for households with a combined income under £31,000, so your upfront cost after the grant is £0. Yearly savings on heating bills are approximately £680, based on Energy Saving Trust figures for a standard park home losing heat through the floor and single-skin walls. The payback period is immediate because the installation is fully funded. Over 25 years, you save roughly £17,000 in total, assuming annual energy price rises of 3%. Your park home must be on a permanent residential site and you must pay Council Tax to qualify. The 0% VAT on energy-saving materials applies until March 2027, reducing costs further if you are not eligible for the full grant.
| Item | Figure |
|---|---|
| Upfront cost after grants | £0 |
| Yearly savings | £680 |
| Payback period | Immediate |
| 25-year lifetime savings | £17,000 |
What homeowners often get wrong
The most common mistake is assuming standard cavity wall insulation always applies to park homes. Many park homes have solid walls or single-skin construction, so the wrong insulation type can lead to damp problems. Here are the three main errors to avoid.
- Assuming all park homes have lofts Many park homes lack a traditional loft space, so loft insulation grants may not apply. The right answer is to check for underfloor insulation instead, which can cut heat loss by up to 25% — missing this means you waste £170 per year on heating.
- Applying before checking EPC rating Some homeowners apply for grants without knowing their Energy Performance Certificate band. The right answer is to get an EPC assessment first — homes with bands E, F, or G qualify for the Great British Insulation Scheme, but D-rated homes do not, and applying incorrectly wastes your time.
- Ignoring the permanent residence rule Holiday park homes or seasonal caravans are not eligible for insulation grants. The right answer is to confirm your park home is on a permanent residential site and you pay Council Tax — if it is not, your application will be rejected, and you miss out on £4,500 of potential funding.
Quick reference
- The Great British Insulation Scheme covers up to 100% of insulation costs for park homes with an EPC rating of E, F, or G and a household income under £31,000.
- Underfloor insulation is often the most effective measure for park homes, saving around £680 per year on heating bills.
- You must live in a permanent residential park home and pay Council Tax to qualify for government insulation grants in 2026.
- Applying without an up-to-date EPC assessment can delay your grant by up to eight weeks according to Ofgem guidance.
- Solid wall insulation is the best option for park homes without cavity walls or lofts, but it requires professional installation to avoid moisture issues.
Frequently Asked Questions
Yes, through the Great British Insulation Scheme and ECO4 if your EPC rating is D or below and your income is under £31,000. Ofgem confirms park homes on permanent residential sites are eligible.
Cavity wall, loft, solid wall and underfloor insulation, depending on your home's construction. The Energy Saving Trust notes park homes often need solid wall or underfloor measures.
Contact your energy supplier or apply through the Ofgem Great British Insulation Scheme portal. You'll need your EPC certificate and proof of income or benefits.
