Bay & bow windows in London
From £1,600
| Service | Typical price in London |
|---|---|
| UPVC double glazed windows | £563 - £1,125 |
| Sash windows (UPVC & timber) | £1,125 - £3,000 |
| French & patio doors | £1,625 - £4,000 |
| Bay & bow windows | £2,000 - £4,750 |
| Secondary glazing | £438 - £1,188 |
Bay window quotes for London’s Edwardian bay-fronted terraces
Bay windows define the streetscape of Edwardian and later-Victorian London: three or four-facet splayed bays across N7 Holloway, SE22 East Dulwich, SW11 Battersea and W6 Hammersmith, plus curved bow fronts across the Ealing and Croydon interwar belt. Legacy Windows is a quote comparison service that puts these briefs in front of installers who understand roof integration, load transfer on the base, and how to keep the original sightlines when the timber frame is failing.
Why locals in London choose Legacy Windows
- London bay pricing on Victorian and Edwardian stock typically runs £2,000 to £4,750 fitted, depending on facet count and lead flashing
- Installers in our network survey the bay roof and cill separately, so lead, felt and tile detail is not left off the quote
- Structural cill support is checked, because many 1900s bays sit on a soft brick base that has spread over 120 years
- Slim double glazing is available for street-facing bays in conservation areas across Wandsworth, Hackney and Ealing
- We shortlist firms that can match original glazing-bar patterns, not just plain casements
Areas we cover around London
Bay-fronted stock is heaviest across N4 Finsbury Park, N16 Stoke Newington, E17 Walthamstow, SE15 Peckham, SW12 Balham, SW17 Tooting, W5 Ealing and W12 Shepherd’s Bush, plus the outer bow-fronted interwar belts in Croydon, Bromley, Enfield and Harrow. Outer-London conservation areas often require the exact facet count and glass size to be preserved.
Frequently asked questions
Does replacing a bay window need planning permission in a London conservation area? Like-for-like replacement in matching materials is usually permitted development, but Article 4 boroughs (parts of Islington, Hackney and Camden) strip that right and require a full planning application even for identical replacements.
Why do bay window quotes vary so much on a Victorian London terrace? A splayed three-facet bay with a tiled or leaded roof, structural cill support and lead flashings is a different job from a flat replacement casement. Where roof and cill are being renewed at the same time, budget the upper end of the range.
Can I get a slim-cavity double glazed bay in a Wandsworth conservation area? Yes: 14mm slim units with a warm-edge spacer meet the current Part L target of Uw ≤ 1.4 W/m²K on most bay geometries, and match the original glazing-bar sightlines that conservation officers ask for.
Windows and doors in London - local context
Victorian and Edwardian terraces dominate inner boroughs, alongside interwar semis in outer London, 1960s-70s tower blocks, and modern glass-fronted apartments in redevelopment zones like Nine Elms and King's Cross.
Dominant era of housing stock: Victorian to Edwardian across inner London, interwar in outer boroughs.
Heritage note: London has over 1,000 conservation areas across 33 boroughs - always check with the local council planning portal before ordering.
- Islington
- Hackney
- Camden
- Wandsworth
- Greenwich
- Ealing
- Croydon
Postcodes we cover in London
- E1
- EC1
- N1
- NW1
- SE1
- SW1
- W1
- WC1
- W2
- N7
- SE15
- SW9
- E14
- E17
Not seeing your postcode? Request a quote anyway - we likely still cover it.