Window Price Calculator
East of England · Updated 27 Sep 2026

Double Glazing Prices in Stevenage

Stevenage uses the East of England calibration rather than London or South East pricing. That keeps the benchmark above the national average while avoiding a larger geographic premium that the model does not apply here.

For searches around double glazing Stevenage, the useful number is the fitted project cost rather than a frame-only advert. These benchmarks also help with uPVC windows Stevenage and replacement windows Stevenage comparisons because the underlying model keeps size, openings, glazing and region separate.

Fitting includedVAT included6% above the UK baseline

Current Stevenage price examples

These are fitted-market estimates from the same engine used by the calculator. The range deliberately allows for ordinary variation in survey detail, installer overhead and the specification you finally choose.

Medium uPVC casement£400–£715Most likely around £560
1200 × 1200 mm · 1 opener
Triple-glazed uPVC£470–£835Most likely around £650
medium window · 1 opener
8 medium uPVC windows£2,890–£5,135Most likely around £4,010
standard white · 1 opener each
3-section bay window£1,375–£2,550Most likely around £1,960
standard replacement bay
Regional position6% above the UK baseline

Where Stevenage sits in the pricing model: the medium white uPVC example centres around £560 after the East of England adjustment is applied.

Search intentPrice guide, not installer directory

This page is designed for homeowners checking double glazing Stevenage, not for presenting a list of companies. It gives you a neutral fitted-price reference before you request or compare quotes.

Check the specification before the total

For several windows, compare the whole-project rate as well as the individual frame prices. Installation efficiency means a ten-window job should not simply be ten times a one-window retail figure.

Stevenage uses the East of England calibration rather than London or South East pricing. That keeps the benchmark above the national average while avoiding a larger geographic premium that the model does not apply here.

What the fitted estimate includes

Supply of the selected window or door, standard replacement fitting, ordinary removal and basic making good are assumed, with 20% VAT included. Scaffolding, hidden structural defects, major access problems, listed-building requirements and highly bespoke work can sit outside the standard range.

The calculator also widens the range when you use rough sizes, so the result does not pretend to have survey-level precision before measurements are known.

A realistic Stevenage project example

8 medium white uPVC windows with one opener each currently centre around £4,010, with a broad fitted range of £2,890–£5,135.

Whole-project pricing8 windows · £4,010 centre

Colour, exact sizes and unusual access can move the real project away from this standardised example.

Change the specificationColour, glazing and openings matter

Switching from white to a coloured finish, adding openers or choosing triple glazing changes the product cost before any unusual building work is considered. Use the calculator when you need those choices reflected in the estimate.

Related local price guides

Compare other markets in the same region, or use the UK price index for the wider national picture.

Compare the UK Window Price Index 2026 →

Stevenage window-price questions

Quick answers about the local fitted-price benchmark and how to use it.

Are Stevenage window prices above or below the UK average?

Our East of England calibration is 6% above the UK baseline before product and specification differences are applied.

Why can two Stevenage quotes be far apart?

Opening layout, colour, glass, frame system, access and the number of units can all move the price. Compare those items before judging the headline total.

Does the Stevenage estimate include fitting and VAT?

Yes. The model includes supply, standard replacement fitting and ordinary 20% VAT. It is not a frame-only supply price.

Your exact project

Build a Stevenage estimate.

Choose your own sizes, opening layouts, glazing, colour and product mix. The calculator applies the correct regional market factor automatically.

Start my estimate · £2.99