Windows and doors grant for a apartment
SEAI pays €3,100 for windows and doors on an apartment. SEAI’s median cost for this work on this type of home is €7,372, which leaves about €4,272 to pay.
The figures
| Self-managed | One Stop Shop | |
|---|---|---|
| Windows (complete upgrade) | €1,500 | €1,500 |
| External doors, two | €1,600 | €1,600 |
| Typical cost (SEAI median) | €7,372 | its own price |
| Left to pay | €4,272 | plus its fees |
How many homes like this need it
Published BERs for apartments, by when they were built: the share that record windows that lose more heat than 2.0 W/m²K.
| Built | BERs | Share |
|---|---|---|
| Before 1940 | 5,396 | 84% |
| 1940–1969 | 1,206 | 79% |
| 1970–1989 | 3,873 | 85% |
| 1990–2004 | 32,859 | 95% |
| 2005–2010 | 28,262 | 91% |
SEAI’s rules for this grant
The attic and walls have to be insulated first, or at the same time.
“If you don’t have sufficient insulation, you must install this before SEAI can pay grants for windows and doors.” SEAI: Upgrading windows and doors leaflet, read 25 Sept 2026
Insulating at the same time as the windows is fine.
“You are planning to upgrade your insulation before or at the same time you are installing your new windows and doors.” SEAI: Upgrading windows and doors leaflet, read 25 Sept 2026
After the works the house has to reach a heat loss indicator of 2.3, or have its attic and walls rated good.
“The property must meet a Heat Loss Indicator (HLI) value of 2.3” SEAI: Windows and doors grant, read 13 Jul 2026
The new windows must be 1.4 or better.
“You must be replacing existing single or double glaze windows with high-performing windows (1.4 or better)” SEAI: Windows and doors grant, read 13 Jul 2026
Windows are grant-aided once only.
“SEAI only offers a once-off grant for windows” SEAI: Windows and doors grant, read 13 Jul 2026
How to apply
1Get the grant offer first
Apply online to SEAI and wait for the offer before any work starts or materials are bought.
2Choose a registered contractor
The contractor has to be registered with SEAI for this work.
3Accept within 30 days
You have 30 days to accept the offer.
4Finish within eight months
You have eight months from the offer to finish and claim.
5Get a BER after the works
Every claim needs a BER after the works, by a registered BER assessor.
6Claim, and wait for payment
SEAI says to allow 4 to 6 weeks to process the payment.
Where it fits in the order
Grants depend on doing things in the right order. Worked plans for apartments, by age:
Get the plan for your homeRegistered contractors, by county
7,622 listings on SEAI’s register for this work
Companies on SEAI’s register for windows and doors that serve each county. Registration is a fact about paperwork; SEAI does not endorse their work. See them by county
- Carlow382
- Cavan136
- Clare273
- Cork274
- Donegal133
- Dublin363
- Galway203
- Kerry271
- Kildare383
- Kilkenny383
- Laois382
- Leitrim203
- Limerick275
- Longford378
- Louth380
- Mayo204
- Meath380
- Monaghan135
- Offaly382
- Roscommon203
- Sligo203
- Tipperary277
- Waterford275
- Westmeath379
- Wexford382
- Wicklow383