Bay Windows cost in London
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 | £1,800 – £4,550 |
| uPVC | Triple | £2,750 – £6,400 |
| Aluminium | Double | £3,300 – £8,000 |
| Timber | Double | £4,350 – £12,750 |
Prices are estimates derived from verified London 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.
London note: Labour rates 30% above Midlands baseline; scaffolding costs inflate period-property jobs.
Read the full bay windows cost guide for a national breakdown by material, glazing, and region.
Other window types in London
Casement
Casement prices in London.
Sash
Sash prices in London.
Tilt & Turn
Tilt & Turn prices in London.
French
French prices in London.
Roof
Roof prices in London.
Secondary
Secondary prices in London.