London regional pricing

How Much Does a Window Fitter Cost in Merton?

Updated prices for . Merton prices are typically 35% above the national average.

14 services priced
London region
Updated

How many windows?

1 windows

Per-window prices are multiplied by your quantity. Package prices and doors stay as shown.

Price summary

Merton Price Summary

Service Low Average High
Single Casement Window (uPVC) £470 £640 £810
Double Casement Window (uPVC) £605 £845 £1,080
Bay Window (3-Panel, uPVC) £1,620 £2,495 £3,375

Prices include labour and materials. VAT may apply. Based on London regional pricing.

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Full pricing

All Window Fitter Prices in Merton

Every price adjusted for Merton using a 1.349x cost multiplier, rounded to the nearest £5.

Single Casement Window (uPVC)

Low

£470

Average

£640

High

£810

2-3 hours per window

Double Casement Window (uPVC)

Low

£605

Average

£845

High

£1,080

2-4 hours

Bay Window (3-Panel, uPVC)

Low

£1,620

Average

£2,495

High

£3,375

1 day

Sash Window Replacement (uPVC)

Low

£675

Average

£1,010

High

£1,350

3-4 hours

Sash Window Replacement (Timber)

Low

£1,080

Average

£1,755

High

£2,430

4-6 hours

French Doors (uPVC Pair)

Low

£1,080

Average

£1,550

High

£2,025

Half day

Patio / Sliding Doors (uPVC)

Low

£1,215

Average

£1,955

High

£2,700

Half day

Bi-Fold Doors (3-Panel, Aluminium)

Low

£3,375

Average

£5,060

High

£6,745

1 day

Front Door Replacement (Composite)

Low

£1,080

Average

£1,550

High

£2,025

3-4 hours

Full House Window Replacement (3-Bed, 8 Windows)

Low

£4,045

Average

£5,735

High

£7,420

2-3 days

Glass Replacement (Single Sealed Unit)

Low

£100

Average

£180

High

£270

30-60 minutes

Secondary Glazing (Per Window)

Low

£270

Average

£405

High

£540

1-2 hours

Roof Window / Skylight (Velux-Style)

Low

£675

Average

£1,145

High

£1,620

Half day

Window Repair (Hinges, Locks, Handles)

Low

£65

Average

£135

High

£200

30-60 minutes

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Regional comparison

How Merton Compares

Average cost of single casement window (upvc) across regions.

Merton
+35% £640
National Average
baseline £475
London
+24% £590

Local insights

What Affects Window Fitter Costs in Merton?

Merton's housing stock ranges from Georgian and Victorian terraces to post-war estates and modern new-builds. Properties across areas like Islington, Hackney and Brixton vary enormously in age, layout and condition, all of which directly affect window fitter costs. Older properties tend to need more preparation work and present access challenges that push prices toward the higher end of the ranges shown above.

London is the most expensive part of the UK for trade work, with labour rates running around 24% above the national average. This reflects the high cost of living, congestion charges, and expensive parking that tradespeople factor into their quotes. Despite the higher prices, there is no shortage of qualified window fitter professionals across the capital. Prices still vary by 30-50% between tradespeople for the same job, making multiple quotes essential.

Several factors affect what you will pay for window fitter work in Merton. The scope and complexity of the job is the biggest driver — straightforward work in accessible locations will be at the lower end, while anything involving older properties, difficult access, or structural complications will cost more. Material choices also make a significant difference; opting for premium brands or higher-spec products can add 20-40% to the total. For larger jobs, a window fitter in Merton might quote £4,045 to £7,420 for full house window replacement (3-bed, 8 windows).

When getting quotes in Merton, aim for at least three from different qualified professionals. Ask each one to visit and assess the work in person rather than quoting over the phone. A good window fitter will check the existing setup, identify any potential complications, and give you a detailed breakdown of costs. Be wary of quotes that seem significantly cheaper than others — they may be cutting corners on materials or not including everything in the price. Always check qualifications, insurance and recent reviews before hiring.

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More services

Other Services in Merton

Explore costs for other services in the Merton area.

50 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about window fitter costs in Merton.

How much does a window fitter cost in Merton in 2026?
Single Casement Window (uPVC) in Merton typically costs between £470 and £810, with the average being around £640. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are window fitter prices cheaper in Merton than London?
Merton prices are 35% above the national average, though still comparable to London for single casement window (upvc).
How do I find a good window fitter in Merton?
Get at least three quotes from different tradespeople, check recent reviews, and ask whether the quote includes VAT and everything you need. A detailed written quote that breaks down all costs is a good sign. Always check qualifications, insurance and recent reviews before hiring.
What affects window fitter prices in Merton?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Merton rates are 35% above the national average. Getting multiple quotes is the best way to ensure a fair price.
Do window fitter prices include materials in Merton?
The prices shown on this page include all typical costs. However, when getting real quotes, always confirm what is and isn't included. Some tradespeople break out costs separately, while others give an all-in price. Ask for a detailed breakdown before agreeing to any work.