Bay Windows cost in Lancaster
Bay window pricing covers a three-light set (typically two side casements plus a fixed central pane) plus the structural head and cill. Cost per opening is roughly 2.5–3× a single casement.
| Material | Glazing | Estimated price range |
|---|---|---|
| uPVC | Double | £1,200 – £2,950 |
| uPVC | Triple | £2,000 – £3,800 |
| Aluminium | Double | £2,150 – £5,250 |
| Timber | Double | £2,850 – £8,350 |
Prices are estimates derived from verified Lancaster casement baseline data (source: Checkatrade (Apr 2025) + HomeOwners Alliance) with a bay windows-specific multiplier applied. Fully-fitted supply and install including disposal and FENSA/Certass certification.
Read the full bay windows cost guide for a national breakdown by material, glazing, and region.
Other window types in Lancaster
Casement
Casement prices in Lancaster.
Sash
Sash prices in Lancaster.
Tilt & Turn
Tilt & Turn prices in Lancaster.
French
French prices in Lancaster.
Roof
Roof prices in Lancaster.
Secondary
Secondary prices in Lancaster.
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All windows in Lancaster · Lancaster installers · cost guides