Bay Windows in Westminster
From £1,200
| Service | Typical price in Westminster |
|---|---|
| Casement Windows | £438 - £1,125 |
| Sash Windows | £750 - £1,375 |
| Bay Windows | £1,500 - £4,000 |
| Door Installation | £1,063 - £2,250 |
| Window Repair | £111 - £313 |
Looking for bay windows in Westminster? Compare free, no-obligation quotes from vetted local installers in your area. Typical prices in Westminster sit around from £1500 depending on unit count and specification.
Bay windows are typically the largest and most complex glazing job in a UK home - three, four or five interconnected units bridging a bay projection, often on a load-bearing wall. Getting them wrong is expensive; getting them right transforms a room and adds resale value.
The price range on bay windows is wider than any other window type because the variables stack: 3-sided vs 5-sided, angle (usually 25° or 45°), whether the bay is squared, canted or bow-shaped, and crucially whether a structural steel is needed above. If your original bay dates from the 1930s or earlier, a steel lintel or reinforced beam is almost always required to meet current Building Regs - budget £600-£1,200 extra for structural work.
Popular specs for bay windows
3 or 5-sided canted bay, 25° or 45° corner posts, matched frame widths, structural steel or reinforced cill where required, external lead flashing, internal decorative arch or plain reveal, argon-filled A-rated glazing.
Windows and doors in Westminster - local context
Georgian squares (Belgravia, Mayfair), Regency terraces around Pimlico and Marylebone, Edwardian mansion blocks in Marylebone and Bayswater, plus modern glass-fronted apartments around Victoria and Nine Elms.
Dominant era of housing stock: Georgian and Regency terraces, Edwardian mansion blocks.
Heritage note: Westminster has 55 conservation areas and thousands of listed buildings - almost any street-facing frame change needs council consent, and works in Belgravia or Mayfair require the tightest specifications.
- Mayfair
- Marylebone
- Belgravia
- Pimlico
- Victoria
- Paddington
- Soho
Postcodes we cover in Westminster
- SW1
- W1
- WC1
- WC2
- W2
- NW1
- NW8
Not seeing your postcode? Request a quote anyway - we likely still cover it.