Window fitters in Northern Ireland
Replacing the windows in a 3-bed semi in Northern Ireland typically costs £4,400 (3-bed semi, nine uPVC casement windows, fitted), with most jobs between £3,500 and £5,300 including VAT. That is 12% below the UK average, because local fitters charge around £145–£195 a day.
Covers Belfast, Londonderry, Lisburn, Newry, Bangor, Craigavon and the surrounding areas.
Replacement window prices in Northern Ireland
| Home | Typical here | UK typical |
|---|---|---|
| Replacement windows for a flat 1 or 2-bed flat, three to five uPVC casement windows, fitted | £2,100 | £2,400 |
| Replacement windows for a 2-bed terrace 2 to 3-bed terrace, four to eight uPVC casement windows, fitted | £3,400 | £3,800 |
| Replacement windows for a 3-bed semi 3-bed semi, nine uPVC casement windows, fitted | £4,400 | £5,000 |
| Replacement windows for a detached house 4-bed detached house, twelve uPVC casement windows, fitted | £6,200 | £7,100 |
Guide prices including VAT, −12% against the UK average. Indicative, not quotations.
Replacing windows in Northern Ireland
Northern Ireland has its own building regulations, separate from England and Wales, so the certification an English fitter mentions may not apply here. Belfast's Victorian terraces, rural bungalows and country cottages are the common jobs, and many bungalows have large windows that cost more to replace than their number suggests. Ask each installer how they certify the work and who guarantees it.
Northern Ireland has a high rate of owner-occupation, with many post-war and recent detached houses and bungalows outside Belfast and Victorian terraces in the city. Bungalows often have large windows, which cost more to replace than their number suggests.
Planning and building rules in Northern Ireland
Northern Ireland has its own building regulations and its own planning system run through its councils, so guidance written for England or Scotland does not apply. Listed buildings and conservation areas in Belfast and Londonderry carry extra controls on windows.
Rules change, so check the current position with your council and the Department of Finance building regulations pages: read the official guidance.
How the weather affects new windows in Northern Ireland
Mild, wet and windy, with few temperature extremes. Wind is the harder test on the north and east coasts, so seals, hardware and fixings matter on exposed sites, and wet winters keep condensation a regular complaint.
Window fitters covering Northern Ireland
GCB Windows
Newry · BT34
Ratings combine reviews collected by Local Quotes with ratings each tradesperson has supplied from other review platforms. We do not collect or verify them. The full breakdown is on their Local Quotes profile.
Recent window enquiries in Northern Ireland
What people in Northern Ireland have actually asked for, in their own words. Names, contact details and street addresses are not shown.
15 wooden double glazed windows, a wooden front door, back door and side door
3 windows,one front door and 2 glass panels
Full new double glazed windows and front and back doors for 3-bed semi
Enquiries submitted through LeadsDoWork in the last two years. Shown to give a sense of the work people in Northern Ireland are having done – they are not reviews, and no rating is implied.
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