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Double-glazing cost by window type
Typical average £1,000£500–£1,250
Typical average £1,200£700–£1,500
Typical average £1,100£600–£1,400
Typical average £1,100£600–£1,400
Typical average £2,500£1,100–£4,000
Typical average £3,000£1,500–£5,000+
What can move a 3-bed quote above or below £8,000–£15,000?
- The real number and dimensions of openings.
- Bay, bow or sash windows instead of standard casements.
- uPVC versus aluminium or timber frames.
- Double versus triple glazing and acoustic/security specification.
- Scaffolding, upper-floor access and making good.
- Doors included in the same glazing package.
How to compare quotes
Compare the same window schedule, frame material, glass specification, hardware, vents, removal, disposal and making-good scope. A cheaper total is not necessarily cheaper if one quote excludes access equipment or finishing work.
Regional pricing
Source
Double Glazing Costs in the UK in 2026
Updated: May 2026
Used for the 3-bedroom whole-house benchmark and fitted window-type ranges.
Frequently asked questions
How much does double glazing cost for a 3-bedroom house in 2026?
The current Checkatrade benchmark for a typical 3-bedroom whole-house project is about £8,000–£15,000.
How many windows does a 3-bed house have?
There is no fixed number. House design matters more than bedroom count, so use the whole-house benchmark only as a starting point and count the actual openings for a quote.
How much is a casement window?
Current fitted guidance is about £500–£1,250 per casement window, averaging around £1,000.
Does triple glazing cost more?
Usually yes. Glass specification, frame material, size and installation complexity all affect the premium, so compare like-for-like specifications rather than only the headline total.