Sash windows in Southampton
From £900
| Service | Typical price in Southampton |
|---|---|
| UPVC double glazed windows | £473 - £945 |
| Sash windows (UPVC & timber) | £945 - £2,520 |
| French & patio doors | £1,365 - £3,360 |
| Bay & bow windows | £1,680 - £3,990 |
| Secondary glazing | £368 - £998 |
Sash window replacements and restorations across Southampton
Southampton’s Victorian and Edwardian sash stock lines the streets of Portswood, Bevois Valley and pockets of the Old Town, and no two boxes are the same width. Legacy Windows introduces homeowners to sash specialists who quote a fixed price for either a full replacement with modern spiral balances or a heritage-grade restoration that keeps the original box in place.
Why locals in Southampton choose Legacy Windows
- Typical 2026 prices sit between £945 and £2,520 per sliding sash, reflecting Southampton’s coastal trade rates and the joinery required.
- Slim double-glazed units from around 12 to 14 mm let installers hit Part L Uw of 1.4 W/m2K in listed and conservation properties where full DGUs will not physically fit.
- All matched joiners quote against the Historic England guidance on original glazing bar profiles, meniscus glass and putty finishes.
- Draught-proofing brush seals and modern balances cut rattle and reduce heating losses without changing the outside appearance.
- Comparison-only service: three sash quotes side by side, no doorstep visits until you invite one.
Areas we cover around Southampton
We route sash briefs across SO14 through SO18, with a particular concentration in the Old Town, Bevois Valley, Portswood terraces and the Bassett Green conservation area. Requests from Winchester, Fareham and the New Forest fringes are handled by the same Hampshire joinery workshops. Around fifteen conservation areas across Southampton apply here, and Listed Building Consent from Southampton City Council is often required before any street-facing sash work begins.
Frequently asked questions
Can I fit double-glazed sashes in a Southampton conservation area? Usually yes, provided the profile, glazing bar layout and horns match the original. Slim units are almost always acceptable in the fifteen conservation zones, but full 24 mm units on street elevations are usually refused. Bassett Green is one of the stricter areas.
How much does a full box sash restoration cost versus replacement? Restoration with draught proofing and a slim double-glazed unit typically runs 30 to 40 per cent cheaper than a full timber replacement, and it preserves the listed fabric. Fitters on our panel quote both options so you can compare.
Do I need Listed Building Consent for sash work in Southampton? Yes for any listed building, whether the change is inside or outside. Southampton City Council administers consent and typically responds inside eight weeks. Your matched installer can prepare the drawings.
Windows and doors in Southampton - local context
Victorian terraces in Portswood and Bevois Valley, interwar semis in Highfield and Bassett, plus dockside modern developments post-2005.
Dominant era of housing stock: Victorian to interwar, plus WWII-era rebuild near the docks.
Heritage note: Around 15 conservation areas including Old Town and Bassett Green.
- Bassett
- Highfield
- Portswood
- Bitterne
- Shirley
Postcodes we cover in Southampton
- SO14
- SO15
- SO16
- SO17
- SO18
Not seeing your postcode? Request a quote anyway - we likely still cover it.