UPVC double glazed windows in Southampton
From £450
| 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 |
UPVC double glazing in Southampton without the hard sell
Legacy Windows matches Southampton homeowners with FENSA or CERTASS registered installers who quote a fixed price up front. Whether you own an interwar semi in Bassett or a two-up-two-down in Portswood, you can compare three like-for-like quotes on the same window spec inside a single working week.
Why locals in Southampton choose Legacy Windows
- Typical 2026 prices land between £470 and £945 supplied and fitted per casement, adjusted for Southampton’s slightly above-average trade rates.
- All matched fitters are registered with FENSA or CERTASS, so building control notification is handled for you.
- Every quote is dimensioned against Part L 2022, meaning a Uw of 1.4 W/m2K or lower and an energy rating of at least Band B.
- Trickle vents are specified to meet Part F where they are needed, which is nearly every replacement in Southampton’s terrace stock.
- No pushy scripts, no anchored prices, no six-hour kitchen-table sits.
Areas we cover around Southampton
The comparison service works across SO14, SO15, SO16, SO17 and SO18 postcodes and reaches out to Bassett, Highfield, Portswood, Bitterne and Shirley. Requests from nearby Portsmouth, Fareham and the wider Test Valley are matched with local Hampshire installers rather than routed to a national call centre. If you sit inside the Old Town or Bassett Green conservation areas, we flag it on the brief so quoted frames match the streetscape.
Frequently asked questions
Are UPVC windows allowed in Southampton’s conservation areas? In most of the fifteen designated areas UPVC is fine on rear elevations and side returns. Street-facing frontages on Old Town or Bassett Green terraces usually require timber or a slim aluminium equivalent, and any Article 4 direction removes UPVC permitted development rights entirely. Check with Southampton City Council before ordering.
How long does a full-house UPVC install take in a Southampton semi? A typical three-bed interwar semi in Highfield or Bassett takes one to two working days for eight to ten windows. Most fitters will notify FENSA within thirty days and post the certificate to your address.
What Uw value should the glass hit for 2026 compliance? Part L requires 1.4 W/m2K or lower on replacements. Most Southampton quotes we see come in at 1.2 to 1.3 using warm-edge argon-filled units, comfortably inside the regulation.
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.