Preston

Bay Windows cost in Preston

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 Preston 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.