What SEAI grants are available for insulation in 2026?
Grant amounts changed in February and March 2026, and the figure you receive depends on what kind of house you live in — not just what work you have done. Here are the current amounts and what they actually mean for a claim.
The amounts, by dwelling type
This is the part most articles get wrong. SEAI does not pay a flat amount per measure. A detached house and an apartment receive very different sums for the same work.
| Measure | Detached | Semi / end-terrace | Mid-terrace | Apartment |
|---|---|---|---|---|
| Attic insulation | €2,000 | €1,300 | €1,200 | €800 |
| Cavity wall | €1,800 | €1,200 | €800 | €700 |
| Wall insulation (cap) | Up to €8,000 across external, internal or cavity | |||
| Windows | €1,500–€4,000 by dwelling type | |||
| External doors | €800 per door, two maximum | |||
Homeowners on qualifying welfare payments receive fixed enhanced amounts regardless of dwelling type: €2,500 attic and €2,300 cavity wall. Figures verified against SEAI on 3 August 2026.
Who qualifies
The core requirement is that your home was built and occupied before 2011. That date applies to most insulation measures. You must also use an SEAI registered contractor — the work does not qualify retrospectively if you use someone who is not on the register.
A BER assessment is required after the work is completed. It confirms the improvement and closes out the claim.
There are two routes. The Better Energy Homes scheme pays a fixed grant per measure and you manage the project. The One Stop Shop route bundles several measures with a single provider handling everything, and carries different amounts.
The second wall measure
A change worth knowing about: homeowners who previously claimed a wall insulation grant can now apply for a second wall measure. If you had cavity fill done years ago and the house is still cold, external or internal insulation may now be grant-aided on top of it.
The overall wall cap of €8,000 still applies across all wall measures combined.
Enhanced amounts
Homeowners receiving certain welfare payments qualify for fixed enhanced amounts that do not vary by dwelling type — €2,500 for attic insulation and €2,300 for cavity wall. If you are in that position it is worth checking, because it can be considerably more than the standard rate for a mid-terrace or apartment.
The fully funded Warmer Homes Scheme is separate again and covers the full cost for eligible households, though waiting lists are long.
Common questions
€2,000 for a detached house, €1,300 semi-detached or end-terrace, €1,200 mid-terrace and €800 for an apartment. Homeowners on qualifying welfare payments receive €2,500 regardless of dwelling type.
Under Better Energy Homes, yes — you pay the contractor and claim the grant afterwards. Under a One Stop Shop the grant is usually deducted before you pay.
For most insulation measures the home must have been built and occupied before 2011. You also need to use an SEAI registered contractor and have a BER assessment done afterwards.
Yes. Attic, wall, windows and doors are separate measures and can be claimed together, subject to the €8,000 cap on wall insulation across all wall types.
Timelines vary with SEAI processing. The BER assessment has to be completed and submitted first, so the sequence matters more than the calendar.
Want a figure for your own house?
A measured survey gives you the actual cost and the grant that applies. €100, refunded in full when you order.
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