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SEAI Window & Door Grant Guide for Homeowners
This guide explains the SEAI grants available for replacing windows and external doors in Irish homes.
Who Can Apply?
- Homeowners
- Companies & Owner Management Companies
- Registered Charities
- Holiday Home Owners
- Approved Housing Bodies (AHB)
- Landlords
Grant Amounts
| Grant Name | Type of Home | Individual Energy Grant | One Stop Shop |
| Windows | Apartment | €1,500 | €1,500 |
| Mid‑Terrace | €1,800 | €1,800 | |
| Semi‑Detached / End of Terrace | €3,000 | €3,000 | |
| Detached | €4,000 | €4,000 | |
| External Doors | All Houses | €800 per door | €800 per door |
| Maximum | 2 doors | 2 doors |
Are You Eligible?
- The house must be built and occupied before 2011
- Existing windows must be single or double glazed and being replaced
- New windows must achieve a U–Value of 1.4 W/m²K or better
- Inefficient external doors must be replaced
- The home must have adequate attic and wall insulation
How the Grant Application Works
Option 1 – Apply Yourself
- Get quotes from registered contractors
- Apply to SEAI for the grant offer
- Wait for approval before starting works
- Complete installation
- Get a Post–Works BER
- Submit documents to SEAI
- Grant is paid to the homeowner
Option 2 – Use a One Stop Shop
- The provider applies for the grant
- Manages the upgrade
- Deducts the grant from the upfront cost
FAQs
- Can I get a grant for windows or doors already installed?
No. Grants cannot be backdated.
- Can I get a grant to install new windows in my extension?
Yes. You can claim a grant for upgrades done on the original part of the house or for any extensions built before 1 January 2011. Extensions built after this date are not eligible.
- Can I replace my windows in stages and get a grant each time?
No. SEAI only offers a once‑off grant for windows and the home must still meet the after‑works Heat Loss Indicator (HLI) requirement.
- What is a U‑Value?
The U‑value indicates how well a wall, window, or roof prevents heat loss. A lower U‑value indicates better insulation.
- What is the Heat Loss Indicator (HLI)?
The Heat Loss Indicator measures how quickly heat escapes from your home. A lower number indicates a warmer, more energy‑efficient home.
How Do I Know If My Home Has Adequate Insulation?
- Check Previous SEAI Upgrades
If the property previously received SEAI grants for attic or wall insulation, the insulation requirement is likely satisfied.
- Check Your BER Advisory Report
Look for insulation ratings:
- Good
- Very Good
You can find your BER on the National BER Register using your MPRN number.
- If You’re Unsure
A BER assessor can review your BER or carry out a pre‑works BER assessment to confirm eligibility.
If insulation upgrades are required, SEAI also provides grants for attic and wall insulation.
Grant Payment Requirements
- A Post-Works BER must be completed after installation
- Windows and doors must meet the required U-Value (1.4 or better)
- A Declaration of Works must be signed by the contractor and homeowner
- The property must meet one of the following:
- Heat Loss Indicator (HLI) of 2.3 W/m²K or better Or
- Attic and wall insulation rated Good / Very Good