Windows & Doors Grant Ireland — Up to €4,000 from SEAI
SEAI launched a standalone Windows & Doors grant on 2 March 2026 — a new individual grant that allows homeowners to upgrade glazing and doors without committing to a full retrofit. Amounts vary by property type and there is an insulation condition. This guide covers who qualifies, how much you could receive, and the key requirements to watch out for.
Check If My Home QualifiesThis is a brand-new SEAI grant
The standalone Windows & Doors grant portal opened on 2 March 2026. Works ordered on or after 27 January 2026 (the date of the Government announcement) with an SEAI-registered contractor are eligible. There was no standalone windows grant before this date.
How Much Is the Windows & Doors Grant?
The window grant varies by property type. External doors are a separate fixed amount per door. You can apply for windows, doors, or both at the same time.
| Property type | Windows grant | Doors grant |
|---|---|---|
| Detached house | €4,000 | €800/door (max 2) |
| Semi-detached / End of terrace | €3,000 | €800/door (max 2) |
| Mid-terrace | €1,800 | €800/door (max 2) |
| Apartment | €1,500 | €800/door (max 2) |
Grant amounts sourced from SEAI.ie, March 2026. Always verify current rates at seai.ie before applying.
Who Qualifies for the Windows & Doors Grant?
Unlike most Better Energy Homes grants, this one is available to a broader group — but there is a key insulation requirement that catches many applicants off guard.
Home built and occupied before 2011
The property must have been built and occupied before 31 December 2010. Homes built from 2011 onwards are not eligible.
Works ordered on or after 27 January 2026
Orders placed before 27 January 2026 are not eligible — this grant did not exist before the Government announcement on that date.
Adequate insulation in place (key condition)
Your attic and wall insulation must be rated Good or Very Good in your BER Advisory Report — OR your home must achieve a Heat Loss Indicator (HLI) of 2.3 W/K·m² or better in the post-works BER. If insulation is poor, you may need to upgrade that first.
High-performance replacement windows
New windows must achieve a U-value of 1.4 W/m²K or better. Most modern double or triple-glazed units meet this standard — confirm with your supplier.
SEAI-registered contractor
Installation must be carried out by a contractor registered with SEAI for this grant type. Check the SEAI contractor register before signing any contract.
Apply before works start (or ensure order is after 27 Jan)
For new orders, apply and receive approval before works begin. For orders placed between 27 January and 2 March 2026 (before the portal opened), SEAI has provisions to allow retrospective applications — check seai.ie for the current approach.
The Insulation Condition Explained
The Windows & Doors grant requires that your home has adequate insulation. SEAI checks this in one of two ways:
Option A — BER Advisory Report
Your BER Advisory Report (issued alongside your BER certificate) must rate attic insulation and wall insulation as Good or Very Good. If either is rated Poor or Reasonable, you may need to improve those first.
Option B — Heat Loss Indicator
Alternatively, the post-works BER must show a Heat Loss Indicator (HLI) of 2.3 W/K·m² or better. The HLI measures overall fabric heat loss — a lower number is better. Your BER assessor calculates this.
How to Apply: Step by Step
Get a BER assessment (if you don't have one)
A BER will confirm your current insulation rating and HLI. If insulation is rated Poor, you'll need to upgrade it before applying for windows. The BER assessor can also tell you if the HLI route is viable for your home.
Get quotes from SEAI-registered window installers
Only SEAI-registered contractors qualify. Check the contractor register at seai.ie. Get at least 3 quotes — compare U-value specs, frame material, warranty, and price.
Apply online at hes.seai.ie
Submit your application before works begin. You'll need your MPRN (11-digit number starting with '1' on your ESB electricity bill), property details, and your chosen contractor's details.
Receive written approval from SEAI
Do not allow installation to begin until you have written approval from SEAI. This is the point of no return — starting before approval permanently disqualifies you.
Installation is carried out
Your registered installer fits the windows and/or doors. A typical full-house window replacement takes 1–3 days depending on the number of windows.
Post-works BER assessment
A post-works BER is required to confirm the home meets the insulation/HLI condition after installation. Your BER assessor produces an updated certificate. SEAI contributes €50 toward this cost.
Grant paid
Once the post-works BER and contractor completion report are submitted, SEAI processes the grant payment.
Common Mistakes to Avoid
Starting work before receiving SEAI approval
Even if you applied, you cannot start installation until SEAI issues written approval. Many homeowners lose the grant by ordering installation immediately after submitting the application.
Not checking the insulation condition first
The insulation/HLI requirement is the most common reason applications fail. Check your BER Advisory Report before applying — if attic or wall insulation is rated Poor, the windows grant may not be claimable yet.
Using a non-SEAI-registered window installer
Many window companies are not registered with SEAI for this grant. Always verify on the SEAI contractor register before signing any contract.
Ordering windows before 27 January 2026
Only works ordered on or after 27 January 2026 are eligible. Windows ordered before this date — regardless of when they were fitted — do not qualify.
Forgetting the door grant
External doors can be claimed at the same time as windows at €800 per door (max 2). Many homeowners claim windows only and miss the additional €1,600 available for doors.
Typical Costs vs Grant Amount
Windows are a significant investment, but the SEAI grant substantially reduces your out-of-pocket cost.
| Item | Typical range |
|---|---|
| Full house window replacement (semi-detached, 8–12 windows) | €4,000–€12,000 |
| External door replacement (per door) | €800–€2,500 |
| SEAI windows grant (semi-detached) | −€3,000 |
| SEAI doors grant (2 doors) | −€1,600 |
| Your indicative net cost | Varies — get quotes |
Indicative costs only. Actual costs vary by property size, window count, frame material (uPVC vs aluminium vs timber), and contractor. Always get 3 quotes from SEAI-registered installers.
Apply directly at SEAI.ie
All applications are made through the official SEAI Home Energy Scheme portal.
Check All the Grants Your Home Qualifies For
The Windows & Doors grant is one of several SEAI grants that may apply to your home. Answer 5 questions and get a personalised breakdown of every grant — including insulation, heat pump, solar PV, and more.
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