Warm Homes Plan

Free Underfloor Insulation in London — Warm Homes Plan

England

Free underfloor insulation for eligible households

Government-funded. Free for eligible homes. Takes 30 seconds.

Current home improvement grants in London

Three active government-backed schemes are available to eligible London homeowners right now.

Warm Homes Plan

Up to £30,000

Insulation, heat pumps, solar panels and more for eligible households. Government-funded, free to apply.

Check eligibility

Boiler Upgrade Scheme

Up to £7,500

Replace your fossil-fuel boiler with a low-carbon heat pump and claim up to £7,500 off the cost.

Check eligibility

ECO4 Scheme

Free upgrades

Funded by energy suppliers. Ends 31 December 2026. Low-income households on qualifying benefits.

Check ECO4 eligibility

Am I eligible for a grant in London?

You likely qualify if...

  • Your home is EPC band D, E, F or G
  • You own your home or have written landlord consent
  • You receive a qualifying benefit (Universal Credit, Pension Credit, etc.)
  • Your property was built before 2000 and has an older heating system

You may still qualify if...

  • Your income is higher but your EPC rating is very poor
  • You are a private tenant (with written landlord permission)
  • You live in a rural area not on the gas grid
  • Your local council has identified your area for LA Flex funding
  • You are a landlord with low-rated rental properties

LA Flex is a local authority referral route that can extend eligibility beyond standard income thresholds. Check below to see if London properties qualify.

Industry accreditation standards

TrustMark MCS Certified Gas Safe Registered NAPIT Approved

Under ECO4, Warm Homes Plan, and Boiler Upgrade Scheme rules, participating installers are required to hold relevant industry accreditation such as MCS, TrustMark, or Gas Safe registration. UK Home Grants is an introduction service — we pass your details to scheme-registered installers with your consent. We do not vet individual contractors ourselves.

What the grant covers in London

Eligible measures under the Warm Homes Plan: Underfloor Insulation for London properties.

⬇ Underfloor insulation Keeps ground-floor rooms warmer
🏠 Loft insulation Stops heat escaping through your roof
■ Cavity wall insulation Fills wall gaps to retain warmth
🧱 Internal and external wall insulation Improves poorly rated solid walls
🕐 Smart heating controls Cuts energy waste with precise scheduling

How it works

1

Check eligibility

Complete the free form below. It takes about 30 seconds and there is no obligation at any stage.

2

Free home survey

An accredited local installer contacts you to arrange a free survey and confirm exactly what your property qualifies for.

3

Installation arranged

Qualifying improvements are fitted by a certified contractor. You pay nothing for measures fully covered by the grant.

Housing stock in London

This area contains a mix of property ages and types typical of a UK town, including pre-war terraces, inter-war semis, post-war council housing, and modern detached houses. Many older properties are EPC band D or below and qualify for funded improvements.

Ready to check your eligibility in London?

Enter your postcode below. No obligation. No payment required at any stage.

Government-funded. Free for eligible homes. Takes 30 seconds.

Frequently asked questions

Can I get free underfloor insulation in London through the Warm Homes Plan?

Yes. Underfloor insulation is available under the Warm Homes Plan for eligible London households with suitable suspended timber ground floors. If your household receives a qualifying benefit and your EPC rating is D or below, submit the form to check whether your London property qualifies.

What type of floor is suitable for Warm Homes Plan underfloor insulation?

Warm Homes Plan-funded underfloor insulation is most commonly installed in properties with suspended timber ground floors, where insulation is fitted between the joists from beneath via crawl space access or lifted floorboards. Solid concrete floors can be insulated but require a different approach and are less common under the scheme.

How is underfloor insulation installed?

For suspended timber floors, rigid insulation boards or mineral wool batts are fitted between the floor joists, usually from beneath via an accessible underfloor void. In most cases the work is completed without lifting floorboards. The process typically takes one day in a London property.

Who qualifies for free underfloor insulation under the Warm Homes Plan?

Eligibility requires a qualifying benefit (Universal Credit, Pension Credit, Income Support, or similar) and an EPC rating of D, E, F or G. The property must have a suitable ground floor construction. Owner-occupiers and private tenants with landlord permission can both apply.

How much can underfloor insulation save on energy bills?

The Energy Saving Trust estimates underfloor insulation saves a typical semi-detached London home around £60 to £115 per year, depending on property type and energy prices. Combined with loft and wall insulation, the total saving can be considerably higher.

Is underfloor insulation disruptive to fit?

In most cases underfloor insulation is fitted from beneath through the underfloor void, so there is minimal disruption inside your London home. If access is only available from above, some floorboards may need to be temporarily lifted, but these are refitted on completion.

What types of property in London are eligible?

Most residential property types in London can qualify, including detached houses, semi-detached houses, terraced houses, bungalows, and some flats. The property must be your main residence or a rental property where you have landlord permission. Eligibility also depends on your current EPC rating and heating system.

Is this an official government service?

UK Home Grants is an independent eligibility service operated by Stubo Interactive. We are not affiliated with DESNZ, Ofgem, or any government department. We connect homeowners with accredited installers who administer grants under the Warm Homes Plan: Underfloor Insulation. The grants themselves are government-funded.

Check your eligibility in London

Takes about 60 seconds. Submitting this form forwards your details to an approved installer so they can contact you about the scheme.

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