“What will new windows actually cost me?” is the first question on almost every survey. Prices you find online are often UK figures or bare supply-only quotes with no fitting. After installing A-rated uPVC windows in over 5,247 Irish homes since 2003, here are honest 2026 prices — per window and for a full house — all supplied, fitted and with the old units removed, plus what the SEAI grant knocks off.
The short answer: New A-rated uPVC windows in Ireland cost from €600 + VAT each fitted (casement), rising to €900–€950 for flush or sliding sash. A full 3-bed semi runs €6,000–€12,000 + VAT depending on style. Triple glazing adds €150–€200 per window. The SEAI grant then deducts €1,500–€4,000 for windows by home type (plus €800 per door, up to €5,600).
How much do new windows cost in Ireland per window?
A-rated uPVC windows start at €600 + VAT per window, supplied and fitted, with old window removal included. The price then rises with the style and glazing spec. Every window carries the A Window Energy Rating as standard. Below are our real 2026 prices by style:
| Window style | From (per window, fitted, ex VAT) | Best for |
|---|---|---|
| Casement | €600 | The Irish standard — best price per window |
| Tilt & turn | €700 | Upper floors and apartments |
| French windows | €750 | Side-hung pair, easy clean, fire escape |
| Flush sash | €900 | Modern flat-profile, timber look |
| Sliding sash | €950 | Period Georgian and Victorian homes |
| Triple-glazing upgrade | +€150–€200 | New builds, deep retrofits, north-facing rooms |
How much to replace all the windows in a 3-bed semi?
A full 8–10 window replacement on a typical Dublin 3-bed semi costs €6,000–€12,000 + VAT, depending on the style you choose — before the SEAI grant. All figures are supplied, fitted, sealed and made-good, with the old windows removed and recycled.
| Style (10 windows) | 3-bed semi total (fitted, ex VAT) |
|---|---|
| Casement | €6,000–€8,000 |
| Tilt & turn | €7,000–€9,000 |
| French | €7,500–€9,500 |
| Flush sash | €9,000–€11,000 |
| Sliding sash | €9,500–€12,000 |
What affects the price of new windows?
Two identical-looking houses can get different quotes. The main drivers:
- Style: casement is cheapest; flush and sliding sash cost more to manufacture.
- Glazing spec: triple glazing adds €150–€200 per window over A-rated double.
- Colour and finish: anthracite grey and foiled wood-grain finishes cost more than white.
- Size and access: large openings, bays and upper floors take more labour.
- Number of openings: more windows lowers the per-window rate.
Is triple glazing worth the extra cost?
Triple glazing adds €150–€200 per window (roughly €1,500–€2,000 on a semi) and drops the U-value from about 1.4 to 0.8 W/m²K. For most Irish homes, A-rated double glazing is the smarter spend; triple earns its place on new builds, deep retrofits and exposed north-facing rooms. We break the maths down fully in double vs triple glazing: is triple worth it?
How much is the SEAI grant, and what will I actually pay?
The SEAI windows and doors grant is a fixed amount by home type, deducted from your fitted cost after a post-works BER. Windows pay €1,500–€4,000; doors pay €800 each (maximum two), for a combined maximum of €5,600 (SEAI.ie, 2026). Full amounts are in our grant amounts by home type guide.
| Home type | Windows grant | Doors (max 2) | Combined max |
|---|---|---|---|
| Apartment | €1,500 | €1,600 | €3,100 |
| Mid-terrace | €1,800 | €1,600 | €3,400 |
| Semi-detached | €3,000 | €1,600 | €4,600 |
| Detached | €4,000 | €1,600 | €5,600 |
In practice, a semi-detached home fitting 8 casement windows (~€6,000–€8,000) claims €3,000 back, for a net around €3,000–€5,000 + VAT. A detached home with 10 windows and two doors (~€11,100 fitted) claims the full €5,600, for a net near €5,500 + VAT.
The bottom line
Budget from €600 + VAT per window and €6,000–€12,000 for a full 3-bed semi depending on style, then subtract your SEAI grant (€1,500–€4,000 for windows). Casement double glazing is the best-value choice for most Irish homes; add triple only where it pays. For an exact, itemised figure, Owen responds within 24 hours and arranges a free survey.
Free Window Quote — Within 24 Hours
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