Reference table
SEAI attic insulation grant amounts 2026
The attic insulation grant is €2,000 for a detached house, €1,500 for a semi-D or end of terrace, €1,400 for a mid-terrace and €1,100 for an apartment. The higher rate is €2,500, €1,900, €1,800 and €1,400.
One table for every rate, the old amounts it replaced, and the dates.
Free, no obligation. One SEAI-registered contractor prices it, not five.
- €2,000SEAI attic grant for a detached house
- €2,500at the higher rate
- €300 to €600typically left to pay on a semi-D
- 300 mmof wool: what SEAI's standard takes
Grant check
Your attic grant and what's left to pay
Two taps: your home, and which rate fits you. The answer is SEAI's fixed grant and its own median cost for the job.
Your SEAI attic insulation grant
€1,500
- SEAI median cost, Jan to Jun 2026
- €2,101
- Left to pay at the median
- €601
SEAI's fixed grant for a semi-d or end of terrace at the standard rate is €1,500. SEAI's median cost for attic insulation on a semi-d or end of terrace from January to June 2026 was €2,101. €2,101 less €1,500 leaves about €601. Our sum; your quote can be higher or lower.
Send this for a real priceHow this is worked out
The grant is SEAI's fixed amount for that home type and rate, as Citizens Information lists it. The median cost is SEAI's own figure from grant-funded attic jobs completed between January and June 2026; the PDF doesn't say whether VAT is in. Left to pay is the median less the grant, our sum. The home must have been built and lived in before 2011, the contractor must be on SEAI's register, and SEAI must approve the grant before work starts. It's an estimate, never a quote.
The table
Attic insulation grant by home type and rate
| Home type | Standard grant | Higher rate* | First-time buyer** |
|---|---|---|---|
| Detached house | €2,000 | €2,500 | €2,500 |
| Semi-D or end of terrace | €1,500 | €1,900 | €1,900 |
| Mid-terrace | €1,400 | €1,800 | €1,800 |
| Apartment | €1,100 | €1,400 | €1,400 |
* Homeowners on certain welfare payments, and landlords with a tenant on HAP or RAS. ** A second-hand home bought after 1 January 2025 that you live in. SEAI pays the same fixed amounts in every county.
Who gets the higher rate
Three groups get more
- Certain welfare recipients. Homeowners getting a qualifying welfare payment. SEAI asks for proof.
- Landlords with a HAP or RAS tenant. Extended to the attic and cavity grants on 6 October 2026, with evidence of the tenancy.
- First-time buyers. A second-hand home bought after 1 January 2025 that you live in.
The Department says the new fixed grants are set at up to 80% of the median cost, and up to 100% for certain groups, and that attic grants now go up to €2,500.
Before and after
Old amounts and new
| Home type | Before 2026 | Now | Change |
|---|---|---|---|
| Detached house | €1,500 | €2,000 | +€500 |
| Semi-D or end of terrace | €1,300 | €1,500 | +€200 |
| Mid-terrace | €1,200 | €1,400 | +€200 |
| Apartment | €800 | €1,100 | +€300 |
On 2 November 2026 SEAI's own insulation grants page still showed the older amounts, €800 to €1,500. SEAI's median costs PDF for 2026 and Citizens Information both show the new ones. SEAI confirms your exact grant in the offer it sends before work starts.
What changed
2026 by date
- 27 January 2026The Government announces the new retrofit plan: attic grants up to €2,000, higher grants for people on welfare payments, and an extra amount for first-time buyers of existing houses, phased in by early March.
- 20 May 2026The Department confirms grants set at up to 80% of median cost, up to 100% for certain groups.
- 6 October 2026The higher attic and cavity rates extend to landlords with HAP or RAS tenants.
- 22 October 2026Citizens Information updates its Better Energy Homes page with the current table.
The rules
What every grant needs
- The home was built and lived in before 2011, and has an MPRN.
- A contractor on SEAI's register does the work, or an SEAI One Stop Shop manages it.
- SEAI approves the grant before you buy materials or start. The work is then done within 8 months.
- A BER assessor rates the home after the work.
- The roof reaches a U-value of 0.16 W/m²K at ceiling level.
Your grant
Your attic grant and a price, in 4 taps
Tap your home, when it was built, what's in the attic now and who you are. Then leave your number and one SEAI-registered insulation contractor who covers your area rings you to look at the attic and price it in writing.
FAQ
Questions people ask
Has the attic insulation grant gone up in 2026?
Yes. A detached house went from €1,500 to €2,000, a semi-D from €1,300 to €1,500, a mid-terrace from €1,200 to €1,400 and an apartment from €800 to €1,100.
Why does seai.ie show a lower amount?
On 2 November 2026 SEAI's insulation grants page still listed the older figures. SEAI's own 2026 median costs PDF and Citizens Information show the new ones. Your SEAI grant offer is the final word.
Do first-time buyers get more?
Yes: €2,500 for a detached house, €1,900 semi-D, €1,800 mid-terrace, €1,400 apartment, for a second-hand home bought after 1 January 2025 that you live in.
Is the grant a percentage of my price?
No. It's a fixed amount for your home type and rate. A cheaper quote doesn't lower it, and a dearer one doesn't raise it.
Keep reading
Related guides
- Attic insulation costSEAI's median cost by home type, before and after the grant.
- How to apply for the grantSix steps, the MPRN, and the rule that loses people the grant.
- Free attic insulationThe Warmer Homes Scheme: who gets it for nothing, and the wait.
- Roof and rafter insulation grantRafters, rooms in the roof and flat roof extensions: the whole-roof rule.