Calculate your window replacement cost
Double-glazed window cost by type in Brighton
UK £500–£1,250 · avg £1,000£500–£1,300 · avg £1,050
UK £700–£1,500 · avg £1,200£750–£1,550 · avg £1,250
UK £600–£1,400 · avg £1,100£650–£1,450 · avg £1,150
UK £600–£1,400 · avg £1,100£650–£1,450 · avg £1,150
UK £1,100–£4,000 · avg £2,500£1,150–£4,200 · avg £2,600
UK £1,500–£5,000 · avg £3,000£1,550–£5,250 · avg £3,150
Whole-house double glazing
What can change a real Brighton quote?
- Casement, sash, sliding, tilt-and-turn, bay or bow style
- Window dimensions and opening configuration
- uPVC, aluminium or timber frame specification
- Double versus triple glazing
- Number of windows in the order
- Scaffolding or difficult access
- Making good around the openings
Local planning considerations
Coastal exposure, conservation areas, parking and restricted access can affect individual quotations beyond the broad South East planning model.
- Exterior specifications may need more attention where a property is exposed to coastal weather and salt-laden air.
- Tight street access or controlled parking can change waste, scaffold and delivery logistics even when the underlying project is unchanged.
- Check listed-building or conservation constraints before assuming a standard window, roof, rendering or extension specification.
How the regional model works
The broad South East factor is 1.15×, but the live window calculator applies only 30% of that regional difference because replacement-window pricing has a large manufactured-product component. The resulting Brighton window factor is 1.045×.
Sources
Double Glazing Costs in the UK in 2026
Published / checked: May 2026
Used for: Replacement window ranges by window type and whole-house double glazing benchmarks
Frequently asked questions
How much do replacement windows cost in Brighton in 2026?
Current double-glazing benchmarks run from about £500 for a basic casement to £5,000+ for larger specialist bow windows. A typical 3-bedroom whole-house project is around £8,000–£15,000 nationally; the modelled Brighton range is £8,350–£15,650.
How much do 10 casement windows cost in Brighton?
The national casement benchmark is £500–£1,250 per window. For 10 windows, the calculator's moderated regional factor gives £5,250–£13,050, before triple-glazing or scaffolding allowances.
Why is the Brighton window factor smaller than the general regional factor?
Frames and glazing units contain a substantial nationally priced manufacturing component, so the calculator applies only 30% of the broad regional difference.
What can increase a window replacement quote?
Sash, bay and bow windows, aluminium or timber frames, triple glazing, upgraded security glass, difficult access, scaffolding and repairs to existing openings can increase the total.