Apartments · checked 3 November 2026
Window grant for apartments
SEAI pays €1,500 for new windows in an apartment, plus €800 a door. Most apartments already hold their heat well enough for the grant. Here's what's left to pay and who applies.
Figures checked against seai.ie on 3 November 2026.
windowgrants.ie is not SEAI or a government body and does not award grants.
- €4,000 detached, €1,800 mid-terrace, €1,500 apartment
- Plus €800 per door, up to two
- One SEAI-registered contractor rings you
SEAI pays €1,500 for new windows in an apartment, plus €800 for each external door, up to two (seai.ie, checked 3 November 2026).
On SEAI's own median cost of €4,196 for an apartment windows upgrade in January to June 2026, that leaves about €2,696 to pay (SEAI's median costs PDF).
How much is the window grant for an apartment?
€1,500, the lowest of the four fixed amounts. It's paid for the windows as one job, whatever the number of windows. External doors are €800 each on top, up to two (seai.ie).
| Apartment | SEAI grant | SEAI median cost, Jan–Jun 2026 | Left to pay |
|---|---|---|---|
| Windows | €1,500 | €4,196 | €2,696 |
| One external door | €800 | €3,176 | €2,376 |
Grants: seai.ie windows and doors page, checked 3 November 2026. Costs: SEAI median costs, January to June 2026, from SEAI's median costs PDF (a sample of 23,412 completed upgrades; the cost each contractor submitted to SEAI at grant payment; VAT status not stated on the PDF), read 29 October 2026. SEAI's door median is for a doors upgrade, which may be one door or two.
Why is the apartment grant smaller?
Apartments have less window. On SEAI's BER register, the median apartment built before 2011 has 9.24 m² of window, against 16.97 m² for a semi-D and 23.74 m² for a detached house (SEAI's BER register, 172,553 apartment certificates). The grant falls roughly in line with it.
| Home type | Median window area | Median HLI | Windows grant |
|---|---|---|---|
| Apartment | 9.24 m² | 1.88 | €1,500 |
| Mid-terrace | 12.48 m² | 2.3 | €1,800 |
| Semi-D | 16.97 m² | 2.35 | €3,000 |
| Detached | 23.74 m² | 2.65 | €4,000 |
Source: SEAI BER Research Tool, the full public file downloaded 29 October 2026: 751,700 certificates for existing homes built before 2011, leaving out the BERs done for grant claims. Medians are ours, from certificates for existing homes built before 2011, leaving out grant claim BERs.
Do apartments pass the heat loss test?
More often than houses. The grant needs Good or Very Good heat loss on the BER advisory report after the work, and an HLI below 2.3 meets it (seai.ie). The median apartment on the register already has an HLI of 1.88, below the line, while the median detached house is at 2.65 (SEAI's BER register). Apartments share walls, floors and ceilings with their neighbours, so less heat escapes. Check your own BER: the median isn't your home. How to read your BER.
Who applies: the owner or the management company?
Either can. SEAI lists homeowners and owner management companies among the people who can apply, as well as landlords and Approved Housing Bodies (seai.ie). An owner applies for their own apartment with its own MPRN. If the windows belong to the building under your lease, talk to the management company before you get a price: it may need to agree the work, the frame style and the colour.
What else to check in an apartment
- Your lease and the house rules: who owns the windows and the front door.
- Whether the management company is planning a whole-building job.
- Access for the fitters and the post-works BER assessor.
- Ask for the U-values (1.4 W/m²K or better) and the VAT in writing.
We pass your request to one SEAI-registered contractor who covers your area. windowgrants.ie is not SEAI or a government body and does not award grants.
FAQ
Apartment questions
How much is the window grant for an apartment?
€1,500 for the windows, plus €800 per external door for up to two, from SEAI.
What do new apartment windows cost after the grant?
On SEAI's median cost of €4,196 (January to June 2026), about €2,696 after the grant. The PDF doesn't say if VAT is included.
Can a management company apply?
Yes. SEAI lists owner management companies among the people who can apply.
Is an apartment front door covered?
SEAI pays €800 per external door, up to two, with no separate rule for apartments on its page. Ask the contractor whether your door counts as external.
Does a ground floor flat get more?
No. Every apartment gets the same €1,500 for the windows.
Your grant
Your window grant in 3 taps
Tap your home type, when it was built and what you're replacing. Your SEAI grant shows as you go. Then leave your number and one SEAI-registered contractor who covers your area rings you with a price.