£6,600 – £14,900 to replace the windows in an average home
What most homeowners spend; the full range runs £3,300–£33,100 by scope. That’s about 8% below the UK national average for Cardiff.
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 Cardiff, Wales, most homeowners spend £6,600–£14,900 to replace the windows in an average home — the full range runs £3,300–£33,100 depending on scope. Cardiff tends to run below the UK national average (about 8% lower), thanks largely to lower local labor costs. 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 Cardiff by ZeroFi's local cost index (×0.83). 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 Cardiff's typical setup.
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In Cardiff, Wales, expect £6,600–£14,900 to replace the windows in an average home — about 8% below 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.
Cardiff tends to run below the UK national average (about 8% lower), thanks largely to lower local labor costs.
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