Window costs in London
Indicative pricing for a standard 1200×1000mm casement window fully fitted in London, across four common specifications.
| Material | Glazing | Size | Price range |
|---|---|---|---|
| uPVC | Double | Standard (1200x1000mm casement) | £650 - £1,630 |
| uPVC | Triple | Standard (1200x1000mm casement) | £980 - £2,280 |
| Aluminium | Double | Standard (1200x1000mm casement) | £1,170 - £2,860 |
| Timber | Double | Standard (1200x1000mm casement) | £1,560 - £4,550 |
London specifics
Housing: Conservation areas across Kensington, Chelsea, Westminster and Camden restrict window changes on 2,200+ listed buildings. Victorian sash restoration dominates premium work.
Climate: South-facing installs benefit most from low-e; west-facing solar gain warrants solar-control glass.
Price driver: Labour rates 30% above Midlands baseline; scaffolding costs inflate period-property jobs.
Installers: High density of Checkatrade-listed installers but wait times 6-10 weeks in conservation postcodes.
Property age in London
Based on 3,466,171 Energy Performance Certificates issued across 33 Greater London local authorities. Age band shapes which window fittings are specified — pre-1919 homes typically need timber sash or heritage-pattern casement; post-1980 stock accepts off-the-shelf uPVC.
Source: DCLG EPC bulk domestic dataset (OGL v3). Certificates issued to 2026-04-24.
687 conservation areas recorded in London on Historic England's national register (Greater London aggregate). If your property sits inside one, expect Article 4 directions and consent requirements that affect window choice and material — see Article 4 directions and windows in conservation areas.
By window type in London
Casement
See casement prices and specification in London.
Sash
See sash prices and specification in London.
Tilt & Turn
See tilt & turn prices and specification in London.
Bay
See bay prices and specification in London.
French
See french prices and specification in London.
Roof
See roof prices and specification in London.
Secondary glazing
See secondary glazing prices and specification in London.
Next steps
Look at installers covering London, or read the full cost-guide library for material and glazing deep-dives.