Window Price Calculator
UK price guide · Updated 26 Sep 2026

uPVC Window Prices UK

Standard white uPVC remains the baseline for most replacement-window jobs. Our current national model centres around £399 for a small window, £526 for a common 1200×1200 specification and £670 for a larger multi-section example.

Fitting includedVAT includedUK market estimate

Current price examples

These examples use the same current pricing engine as the calculator. They are market estimates rather than binding installer quotations.

Small uPVC casement£287–£511Most likely around £399 · 630 × 900 mm, one opener
Medium uPVC casement£379–£673Most likely around £526 · 1200 × 1200 mm, one opener
Large uPVC casement£482–£858Most likely around £670 · 1770 × 1200 mm, two openers

What changes a uPVC window price?

A fixed window is cheaper than an opening window of the same size. Additional sections add mullions or transoms, and additional opening sashes add hardware and fabrication. Coloured foils, triple glazing and flush or heritage frame systems also increase the price.

Standard uPVC versus flush uPVC

The calculator treats flush and heritage systems separately rather than pretending all uPVC is equivalent. On the same medium baseline, the current model centres around £605 for mid-market flush uPVC and £710 for a premium heritage-style flush system.

What affects the price?

  • Exact width and height
  • Number of separate sections
  • Number and position of opening sashes
  • White, coloured or wood-effect finish
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.

What does one uPVC window cost?

For a typical 1200×1200 white double-glazed example, the current national centre is about £526.

Is a fixed uPVC window cheaper?

Generally yes, because there is no opening sash, hinge set or locking hardware.

Do coloured uPVC windows cost more?

Usually. Coloured and wood-effect finishes carry a premium over the white baseline in the calculator.

Your own specification

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