Windows and Doors Grant Ireland 2026: Up to €5,600 from SEAI

Windows and Doors Grant Ireland 2026: What Changed

Before 2026, SEAI only funded windows and doors as part of a full deep retrofit through the One Stop Shop route. You had to commit to upgrading your entire home to at least a BER B2 rating before windows and doors were covered.

That changed on 27 January 2026 when the Government announced the new standalone windows and doors grant. The online portal for applications opened on 2 March 2026.

These are now two separate dates worth knowing.

Works ordered or commenced from 27 January 2026 onward are eligible for retrospective applications. Works ordered before 27 January 2026 are not eligible, regardless of when they were fitted.

If you ordered windows after 27 January but before the portal opened on 2 March, you can still apply. Contact SEAI at hes.seai.ie to check the current process for retrospective claims in that window.

For how this grant fits the full SEAI programme, see our SEAI grants Ireland 2026 guide.

Grant Amounts by House Type

The windows grant scales by property type. The doors grant is a flat rate per door.

Windows Grant

Property type	Windows grant
Detached house	€4,000
Semi-detached or end-of-terrace	€3,000
Mid-terrace	€1,800
Apartment	€1,500

Doors Grant

€800 per qualifying external door. Maximum two doors per home. Maximum total for doors: €1,600.

Combined Maximum

Property type	Windows	Doors (max 2)	Total
Detached house	€4,000	€1,600	€5,600
Semi-D or end-terrace	€3,000	€1,600	€4,600
Mid-terrace	€1,800	€1,600	€3,400
Apartment	€1,500	€1,600	€3,100

You can apply for windows only, doors only, or both together. Most homeowners apply for both to maximise what they claim.

What Doors Actually Qualify

This is where most homeowners get a surprise. Not every door qualifies.

Doors that qualify: Single-leaf external doors. Front door, back door. Porch doors where the porch door is the actual external door of the home.

Doors that do NOT qualify: Internal doors. Garage doors. Patio sliders. French doors. Side gates. Double-leaf door configurations.

The grant covers a maximum of two external doors per home. Most claims are a front door and a back door.

If your door is not a single-leaf external door, it does not qualify regardless of its U-value or energy efficiency.

Who Qualifies

You must meet all of the following:

1. Your home was built and occupied before 2011. This includes extensions built before 1 January 2011. Extensions built after that date are not eligible.

2. You are the owner of the property. Landlords qualify. The property owner must be the applicant. Owner-occupiers and landlords are both eligible.

3. The property has a valid MPRN. This is your electricity meter reference number, found on your electricity bill.

4. Your attic and wall insulation are already adequate. This is the condition that catches most people out. See the section below on the insulation requirement.

5. Works ordered from 27 January 2026 onward. Works ordered before this date are not eligible.

6. You have not previously claimed this grant on this property. The grant is once-off. One claim per property. Whatever you replace in your application is your one entitlement for this home.

The Insulation Requirement: Why It Matters

The windows and doors grant has an insulation requirement that no other individual SEAI grant has in quite the same way.

SEAI requires that your home meets one of two conditions before the grant is paid:

Condition A: Your attic and wall insulation are both rated Good or Very Good on a BER Advisory Report.

Condition B: Your home achieves a Heat Loss Indicator (HLI) of 2.3 W/K·m² or lower in the post-works BER.

The HLI measures how fast heat escapes from your home. A lower number means better insulation. Most homes with modern insulation in place already meet this threshold.

How to check if you qualify now:

If your home previously received SEAI grants for attic and wall insulation, you almost certainly meet the requirement. Your insulation was rated Good or Very Good as part of that grant process.

If your home has an existing BER with an Advisory Report, check whether attic and wall insulation are listed as Good or Very Good. You can find your BER on the SEAI BER register using your MPRN.

If you do not have a current BER, get a BER assessment before applying. It tells you exactly where you stand. The SEAI grant covers €50 toward the cost (€280 if you receive qualifying welfare payments).

If your insulation is rated Poor or Reasonable, you need to upgrade it before the windows grant becomes available to you. The attic insulation grant covers up to €2,500 and the cavity wall insulation grant covers up to €2,300 for welfare recipients.

Technical Specifications Your Windows Must Meet

Your new windows must achieve a U-value of 1.4 W/m²K or lower. A lower U-value means less heat escapes through the glass.

Most modern double or triple-glazed windows on the Irish market meet this standard. Confirm with your supplier before ordering. Ask for the specific U-value of the product they are quoting.

The SEAI requirements also specify triple glazing on north-facing windows and minimum double glazing on all other orientations.

Your SEAI-registered contractor must provide a signed declaration confirming the products meet these U-value requirements. This declaration is part of the grant payment paperwork.

The VAT Reduction Most Homeowners Miss

In addition to the SEAI grant, qualifying energy-efficient windows and doors benefit from 0% VAT on supply and installation.

This VAT reduction has applied since 2023 and reduces the effective cost of the upgrade further, on top of the SEAI grant.

Not all window and door products qualify for 0% VAT. Your installer applies the 0% rate at the point of sale where it qualifies. Ask your contractor to confirm whether your chosen products are eligible before agreeing a price.

What the Grant Actually Covers: Real Costs After the Grant

The SEAI grant helps but does not cover the full cost of window and door replacement.

For a typical 3-bed semi-detached replacing 8 to 10 windows with double glazing, expect to pay €7,500 to €10,000 before the grant. Triple glazing or larger homes push that higher.

Here is an estimate of what you pay after the grant and after the 0% VAT reduction:

Home type	Est. total before grant	Windows grant	Approx cost after grant
Detached (12-15 windows)	€11,000 to €15,000	€4,000	€7,000 to €11,000
Semi-D (8-10 windows)	€7,500 to €10,000	€3,000	€4,500 to €7,000
Mid-terrace (6-8 windows)	€5,000 to €7,500	€1,800	€3,200 to €5,700

These are indicative figures. Final costs depend on number of windows, frame material (uPVC is cheapest at €450 to €800 per window, aluminium and timber cost more at €800 to €1,700), glazing type and contractor.

Get three written quotes from SEAI registered contractors before choosing.

How to Apply: Step by Step

Step 1: Check your insulation first. Get a BER assessment or check your existing BER Advisory Report to confirm your attic and wall insulation are rated Good or Very Good, or that your HLI is already 2.3 or lower.

Step 2: Find an SEAI-registered contractor. Not all window companies are SEAI-registered for this specific grant. The Windows and Doors category was only added to the SEAI register in early 2026. Always verify registration on the official SEAI contractor search at hes.seai.ie before signing anything. Our SEAI registered contractors guide explains which register to check.

Step 3: Get three quotes. Prices can vary significantly between installers. Always get at least three written quotes covering the full scope: product U-value specification, number of windows and doors, frame material, installation, VAT, and any additional costs.

Step 4: Apply for grant approval before work starts. Apply through the SEAI Home Energy Scheme portal at hes.seai.ie. You need the SEAI contractor's registration number as part of the application.

For works ordered between 27 January and 2 March 2026 (before the portal opened), SEAI has provisions for retrospective applications. Check hes.seai.ie or contact SEAI on 01 808 2004.

Step 5: Complete the installation. Once you have SEAI written approval, your contractor installs the windows and doors. Do not start any work before written approval is received.

Step 6: Post-works BER assessment. After installation, a registered BER assessor carries out a post-works BER to confirm your home meets the HLI requirement. The €50 BER assessment grant applies here. The cost of the post-works BER is your responsibility but the grant covers a portion of it.

Step 7: Submit documentation and receive payment. Submit the Declaration of Works form (signed by you, your contractor and your BER assessor) and the Request for Payment form to SEAI. Grant payment arrives within a few weeks of SEAI receiving complete paperwork.

Combining Windows with Roof Replacement

If you are replacing your roof, the scaffold is already in place. This is the most cost-efficient time to also upgrade your attic insulation and your windows.

Here is why the timing matters.

The windows grant requires your attic insulation to be rated Good or Very Good. If your insulation is currently rated Poor or Reasonable, you need to upgrade it first. If the roofer's scaffold is already erected, adding attic insulation at the same time saves one scaffold hire of €1,200 to €2,500.

Once the insulation is upgraded, you meet the eligibility condition for the windows grant. You can then apply separately for the windows grant once the insulation works are complete and the post-insulation BER confirms Good or Very Good ratings.

The sequence: roof replacement plus attic insulation together on one scaffold, then windows separately once the BER confirms eligibility.

See how to combine roof replacement with insulation. Check if your home qualifies for the attic insulation grant. For full replacement budgets, see our new roof cost Ireland 2026 guide.

Frequently Asked Questions

Can I apply for windows and doors together?

Yes. You can apply for windows only, doors only, or both in the same application. Claiming both maximises the grant available to you.

Is this grant means tested?

No. Income does not affect your eligibility. Any homeowner or landlord with a pre-2011 home that meets the insulation requirement can apply.

Can I claim the grant in stages, for example some windows now and more later?

No. The grant is once-off. Whatever you replace in your application is your single entitlement for this property. Plan carefully before applying.

Do landlords qualify?

Yes. Landlords can apply for properties built before 2011 with an MPRN. The property owner must be the applicant. The works must use an SEAI-registered contractor.

What if my insulation is not Good or Very Good?

You need to upgrade your insulation first. The attic insulation grant covers up to €2,000 standard rate or €2,500 for welfare recipients or first-time buyers. The cavity wall insulation grant covers up to €1,800 standard or €2,300 for welfare recipients.

Can I claim this grant alongside other SEAI grants?

Yes. The windows and doors grant stacks with other individual grants. You can claim attic insulation, heat pump and windows grants in the same year. Each is a separate application. Note that if combined grants in one year exceed €10,000 you will need a Tax Clearance Certificate.

What if my insulation was upgraded before 2011 without an SEAI grant?

You may still qualify. Get a current BER assessment. If it shows insulation rated Good or Very Good, or your HLI is 2.3 or lower, you meet the eligibility condition regardless of whether grants were previously used.

External Sources

• SEAI: Windows and Doors grant
• Apply at hes.seai.ie
• BER register: ndber.seai.ie
• Citizens Information: SEAI grants

All grant amounts verified against seai.ie May 2026. SEAI grant rules can change. Always verify current eligibility and amounts at seai.ie before ordering any works or making any payment.