£8,800 – £19,800 to replace the windows in an average home
What most homeowners spend; the full range runs £4,400–£43,900 by scope. That’s about 22% above the UK national average for London.
Get a free quote from local pros →Cost swings widely with what you're actually doing — a cosmetic refresh and a full replacement are different projects. Here's the range at each scope.
In London, England, most homeowners spend £8,800–£19,800 to replace the windows in an average home — the full range runs £4,400–£43,900 depending on scope. London is one of the country’s higher-cost markets — expect prices roughly 22% above the UK national average, driven by higher labor rates, permit costs and steady demand. All figures are in pounds sterling (GBP) and typically include VAT awareness — check whether a quote includes VAT.
Source: ZeroFi estimate · national industry cost ranges, updated 2026-07 · adjusted to London by ZeroFi's local cost index (×1.10). Planning ranges, not quotes — describe your job for a real estimate.
uPVC double glazing is the overwhelming UK standard ("double glazing"); period homes may need timber sash to match conservation rules. The regional product — not just labor rates — is why prices differ, so the ranges above reflect London's typical setup.
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In London, England, expect £8,800–£19,800 to replace the windows in an average home — about 22% above the UK national average. Your exact price depends on frame material (upvc, aluminium, timber or composite) and glazing — double vs. triple, and any solar-control or safety glass. Describe your job to get a real quote from local pros.
London is one of the country’s higher-cost markets — expect prices roughly 22% above the UK national average, driven by higher labor rates, permit costs and steady demand.
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