UK price guide · Updated 26 Sep 2026
Whole House Window Replacement Cost
For a like-for-like set of common medium white uPVC windows, the current model centres around £2,445 for five windows, £3,786 for eight, £4,732 for ten and £5,552 for twelve.
Current price examples
These examples use the same current pricing engine as the calculator. They are market estimates rather than binding installer quotations.
Why whole-house prices are not just one window × quantity
Larger jobs are normally more efficient because survey, travel, setup and fitting time are spread across more units. The calculator therefore applies a modest job-size efficiency to standard uPVC rather than multiplying a single-window figure with no adjustment.
Real houses contain a mixture of products
A whole-house total can rise quickly if it includes a bay, sash windows, aluminium frames, French doors or a composite entrance door. The examples above deliberately keep every unit the same so you can see the effect of quantity alone. For a real home, add each different specification to the calculator.
What affects the price?
- Number of windows
- Mix of small, medium and large openings
- Bays, doors or premium frame systems
- Colour, glazing and regional labour market
What “fitted” means here: supply, standard replacement installation and ordinary 20% VAT are included. Unusual access, scaffolding, structural repairs, planning/listed-building requirements and highly bespoke work can sit outside the standard estimate.
Related price guides
Compare the closest related costs, then use the calculator for your own specification.
Questions people ask
Short answers to the most useful questions around this price topic.
How much does it cost to replace all windows in a house?
As a simple benchmark, eight common medium white uPVC windows centre around £3,786 and twelve around £5,552 in the current model.
Are whole-house jobs cheaper per window?
They can be, because fixed survey and installation costs are spread across a larger order.
Does this include doors?
No. The examples here are windows only. Doors should be added separately because their pricing model is different.
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