UK Government

Warm Homes Plan Grants in Cardiff

Wales

Up to £30,000 per eligible household

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

Current home improvement grants in Cardiff

Three active government-backed schemes are available to eligible Cardiff 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 Cardiff?

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 Cardiff 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 Cardiff

Eligible measures under the Warm Homes Plan for Cardiff properties.

❄ Air source heat pumps Efficient low-carbon heating and hot water
🌎 Ground source heat pumps Uses ground heat for year-round efficiency
🏠 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
⬇ Underfloor insulation Keeps ground-floor rooms warmer
🕐 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 Cardiff

Wales has a high proportion of older rural and valley-community housing. Many properties are stone-built with solid walls and are heated by older oil or gas systems, making them strong candidates for multiple grant measures.

Warm Homes Plan by postcode in Cardiff

Cardiff covers 3 postcode districts. Use the links below to check eligibility for a specific area.

Ready to check your eligibility in Cardiff?

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 home improvements in Cardiff under the Warm Homes Plan?

Eligible Cardiff homeowners may qualify for fully or partially funded energy efficiency improvements under the Warm Homes Plan. Funding levels depend on your property type, existing insulation, heating system, and household circumstances. Submit the eligibility form to find out what you qualify for.

What is the Warm Homes Plan?

The Warm Homes Plan is the UK government scheme that funds energy efficiency improvements for eligible households, including heat pumps, insulation, and other low-carbon measures. It is a long-running government programme with no announced end date, designed to help UK homes reduce energy costs and carbon emissions.

How much can I get towards home improvements?

Grants of up to £30,000 per household are available for eligible properties, depending on the measures required and household circumstances. Heat pump installations can attract up to £7,500 through the separate Boiler Upgrade Scheme, which may be combined with Warm Homes Plan support.

Who is eligible for the Warm Homes Plan?

Eligibility depends on factors including property energy rating, household income, existing heating system, and tenure. You must own your home or have written landlord permission. Private tenants and housing association tenants may also qualify through landlord schemes.

How long does a Warm Homes Plan application take?

The online eligibility check takes about 60 seconds. If you pre-qualify, an approved installer in Cardiff will be in touch within 1 to 3 working days to arrange a free home assessment. Installation timelines vary by measure and installer availability.

Is this service free?

Yes. Submitting the eligibility form is free. If you qualify, approved installers typically offer free surveys. Any costs associated with the actual installation depend on your grant award and scheme rules, which the installer will explain in writing before any work begins.

What types of property in Cardiff are eligible?

Most residential property types in Cardiff 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. The grants themselves are government-funded.

Check your eligibility in Cardiff

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

These low-cost improvements can start reducing your bills straight away.

Smart thermostat
Control your heating remotely and cut bills by up to 30% while you wait for your grant.
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Radiator reflector panels
Bounce heat back into the room instead of losing it through external walls.
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