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The higher cavity wall grant

Homeowners on Fuel Allowance, Working Family Payment, One-Parent Family Payment, Domiciliary Care Allowance or Carer's Allowance (living with the person you care for), or Jobseeker's Allowance or Disability Allowance for over 6 months with a child under 7 get a higher fixed cavity wall grant: €2,300 for a detached house, €1,700 for a semi-detached or end-of-terrace house, €1,100 for a mid-terrace house, €900 for an apartment. It started on 2 March 2026, and taking it doesn't cost you your place on the waiting list for free upgrades.

Who gets it, how much, what it covers, and how it sits beside free upgrades.

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Free, no obligation. One registered installer prices it, not five.

  • €2,300detached, higher rate
  • €1,700semi-D or end of terrace
  • €1,100mid-terrace
  • €900apartment
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Which payments qualify

  • Fuel Allowance
  • Working Family Payment
  • One-Parent Family Payment
  • Domiciliary Care Allowance
  • Carer's Allowance, if you live with the person you care for
  • Jobseeker's Allowance or Disability Allowance, received for over 6 months, with a child under 7

SEAI may ask for proof of the payment.

What it covers

Home typeHigher rateTypical costLeft to pay
Detached€2,300€2,350about €50
Semi-D or end of terrace€1,700€1,585€0
Mid-terrace€1,100€1,250about €150
Apartment€900€1,036about €136

The attic grant has a higher rate too: €2,500, €1,900, €1,800 and €1,400.

Check your cavity wall grant

Four quick taps. You see your grant as you go, then what the job typically costs after it, the BER and your next step. Your number is only asked for at the end, if you want a price.

A semi-detached built before 2011, no earlier wall grant, owner on a qualifying payment: a €1,700 grant, and the job typically costs €1,585, so the grant covers the job.

Step 1 of 6

What kind of home is it?

SEAI sets a fixed grant for each house type.

How this is worked out

SEAI pays a fixed cavity wall grant for each house type, and a higher fixed amount to homeowners on certain welfare payments and to landlords with a HAP or RAS tenant. The typical cost is the median price of cavity wall insulation for your house type across thousands of grant-funded jobs, and the post-works BER is its median price less its own grant. Your installer prices your walls after a look: it's a guide to plan with, never a quote. SEAI decides every grant.

Higher grant or free upgrades?

The same payments can open SEAI's free upgrades, for homes built and occupied before 2006, where a surveyor decides what's done and there's a waiting list. The higher grant is a quicker way to get the cavity filled now, and using it doesn't affect your place on that list. Free upgrades.

Cavity Wall Insulation Grants guides & price breakdowns

Straight answers to what people ask most: itemised costs, specifications, planning or grants, and what to check before you book.

Cost & Pricing GuideWhat cavity wall insulation costs after the grantCavity wall insulation after the SEAI grant: about €285 on a semi-D, €550 detached, €400 mid-terrace. The BER and higher rate too.Read the guide →Grants & RegulationsWho qualifies for the cavity wall grantWho qualifies for the SEAI cavity wall grant: built and first lived in before 2011, an MPRN, no earlier wall grant, every wall done, approval first.Read the guide →Grants & RegulationsHow to apply for the cavity wall grantHow to apply for the SEAI cavity wall grant: online in minutes, accept within 30 days, work and BER within 8 months, paid in 4 to 6 weeks.Read the guide →Grants & RegulationsWhy cavity wall grants get refusedWhy SEAI cavity wall grants get refused: work before approval, built from 2011, an earlier wall grant, partial walls, no BER, the 8-month deadline.Read the guide →Grants & RegulationsStarted the work before the grant was approved?Work started before SEAI approved the cavity wall grant gets nothing, and neither do materials bought early. What to do now, and the right order.Read the guide →Grants & RegulationsCavity wall and attic grants togetherThe SEAI cavity wall and attic grants together: €2,800 for a semi-D, €3,800 detached, the BER, and what's left to pay.Read the guide →

More guides & resources: The BER after cavity wall insulation · Had a wall grant before? The second wall measure · All guides & calculator hub · Technical & trade glossary · Frequently asked questions · All areas covered

Questions people ask

Who gets the higher cavity wall grant?

Homeowners on Fuel Allowance, Working Family Payment, One-Parent Family Payment, Domiciliary Care Allowance or Carer's Allowance (living with the person you care for), or Jobseeker's Allowance or Disability Allowance for over 6 months with a child under 7, and landlords with a HAP or RAS tenant.

How much is the higher rate?

€2,300 for a detached house, €1,700 for a semi-detached or end-of-terrace house, €1,100 for a mid-terrace house, €900 for an apartment.

Will it affect my place for free upgrades?

No. Using the higher grant doesn't affect your place on the waiting list for SEAI's free upgrades.

Does the higher rate cover the whole cost?

For a typical semi-D, yes. A detached house typically has about €50 left, a mid-terrace about €150.

Cavity Wall Insulation Grants across all 26 counties

Requests from all 26 counties go to one vetted local specialist who covers your county — from Dublin, Cork, Galway and Limerick to Kildare, Meath, Wicklow, Waterford and Donegal. Pick your county below for local prices, specifications and advice. Compare all areas covered →

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Check your cavity wall grant

Four taps to your grant and what's left to pay, then one SEAI-registered installer who covers your county rings with a price.

Get a free quote