Calculate your window replacement cost
Double-glazed window cost by type in Bristol
UK £500–£1,250 · avg £1,000£500–£1,300 · avg £1,000
UK £700–£1,500 · avg £1,200£700–£1,550 · avg £1,250
UK £600–£1,400 · avg £1,100£600–£1,450 · avg £1,100
UK £600–£1,400 · avg £1,100£600–£1,450 · avg £1,100
UK £1,100–£4,000 · avg £2,500£1,100–£4,100 · avg £2,550
UK £1,500–£5,000 · avg £3,000£1,550–£5,100 · avg £3,050
Whole-house double glazing
What can change a real Bristol 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
Regional adjustment is only one part of the estimate; access, structural work and specification can have a larger effect on individual projects.
- Sloping plots, steps and restricted rear access can materially affect excavation, landscaping and waste-handling allowances on some homes.
- Older or altered properties should be budgeted with a separate contingency for hidden fabric and structural conditions.
- For constrained streets, compare quotes on a like-for-like basis for parking, scaffold, skips and delivery assumptions.
How the regional model works
The broad South West factor is 1.07×, but the live window calculator applies only 30% of that regional difference because replacement-window pricing has a large manufactured-product component. The resulting Bristol window factor is 1.021×.
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 Bristol 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 Bristol range is £8,150–£15,300.
How much do 10 casement windows cost in Bristol?
The national casement benchmark is £500–£1,250 per window. For 10 windows, the calculator's moderated regional factor gives £5,100–£12,750, before triple-glazing or scaffolding allowances.
Why is the Bristol 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.