Sash Windows in London
From £600
| Service | Typical price in London |
|---|---|
| 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 |
Sash window specialists for London’s period properties
Sash windows are common across the older parts of London, and they need a different approach to a standard casement job. Access is often the bigger challenge than weather here - scaffolding, parking suspensions and flat entry systems all affect a straightforward job, and old single-glazed sashes are usually where that shows up first as draughts and heat loss. Housing stock varies enormously street to street, from Georgian squares and Victorian terraces to 1960s low-rises and glass-fronted new builds, and a lot of those original sash boxes are now decades past their expected working life.
Why locals choose us
- Double-glazed sash units built to match traditional sightlines and horns
- Experience working to conservation area guidelines where many boroughs have conservation areas or Article 4 directions covering entire streets
- Draught-proofing and mechanism overhauls where full replacement isn’t needed or allowed
- Housing stock varies enormously street to street, from Georgian squares and Victorian terraces to 1960s low-rises and glass-fronted new builds
- Weight-and-cord or spring-balance mechanisms serviced or renewed as part of the job
Pricing in London
Applying London’s 1.25x regional factor to our national range gives a typical cost of £750–£1375 for a sash window replacement, though the final figure depends on materials and the scope of the job.
Areas we cover around London
We cover London and the surrounding area, including Croydon, Bromley, Enfield, Harrow and Richmond. If you’re just outside these areas, get in touch anyway - we can usually still help.
Frequently asked questions
Can I fit double-glazed sash windows on a listed or conservation-area property in London? Often yes, but many boroughs have conservation areas or Article 4 directions covering entire streets, so slimline double-glazed units that replicate the original glazing bars are usually the way through rather than a standard modern sash.
Is it better to repair or replace old sash windows? If the timber frame itself is sound, draught-proofing and mechanism repairs are usually cheaper and can be enough. Full sash replacement makes more sense once the frame has rotted or the sash cords have failed repeatedly.
How long does sash window replacement take in London? A single sash window usually takes half a day including making good the surrounding plaster or woodwork, though full-house jobs on larger period properties take longer.
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.