Double glazing quotes in Southampton
Compare free written quotes from local installers who cover your SO postcode, for new windows, glass-only replacement, repairs and acoustic or secondary glazing. Homeowners, flat owners and landlords start from different places: a survey, a freeholder's consent or an EPC.
41.5% of Southampton households live in a flat, nearly double the England and Wales share
- Free and no obligation for houses, flats and lets
- Local installers who cover your postcode
- Energy rating on every quote, ready for your next EPC
How it works
How Southampton quotes reach you
Fill in the form
Flat or house, window count, frame material and timing. Choose "I'm the landlord" if it is a let.
We confirm the details
A quick call confirms the job, including any freeholder consent, then it goes to local installers who cover your postcode.
Survey and written quote
Each installer quotes in writing. Check the U-value, any Article 4 work and the guarantee before you choose.
What you can get quoted for
What you can get quoted for in Southampton
Southampton installers quote for new windows, glass-only replacement and window repairs. One form covers all three:
- New windows in uPVC, aluminium or timber, including sash windows for period houses;
- Glass-only replacement of misted or broken sealed units;
- Repairs to hinges, handles, locks and seals;
- Acoustic or secondary glazing for homes near the airport or on Article 4 streets.
The form asks about windows. Ask the installer at the survey to price a door as well.
Get Southampton window quotesFree, no obligation
Local factors
What changes a Southampton double glazing quote
Six things change a Southampton window quote: a flat, a let, an Article 4 street, airport noise, exposure to Southampton Water and the grant list. Check which apply before the survey, so the quotes line up.
| In Southampton | What it changes in your quote | Ask or check |
|---|---|---|
| 41.5% of households live in flatsCensus 2021 | No householder permitted development rights, and the freeholder may need to agree | Written consent from the freeholder or managing agent |
| 29.2% of households rent privatelyCensus 2021 | Lets need EPC band E now, and band C is the 2030 aim | The U-value or window energy rating of each option |
| Seven conservation areas with Article 4 directionsplanning.data.gov.uk | A new style or material on front windows can need permission | Drawings for an application, and timber or sash options |
| Noise Insulation Scheme near the airportSouthampton Airport | Check it before paying for windows in full | Your address against the contour, then the Rw figure |
| Southampton Water frontageBS 6375-1 | Exposed elevations take more wind and salt | The weathertightness class and coastal-rated hardware |
| July 2026 Warm Homes: Local Grant listDESNZ | Glazing is an eligible measure | Whether your household qualifies |
Flats
Replacing windows in a Southampton flat: consent comes first
Southampton flat owners should sort consent before asking for quotes: flats have no householder permitted development rights in England. 41.5% of households here live in flats, against 21.7% across England and Wales, and 5.9% live in converted houses or buildings.
New windows that change the look of the building can need planning permission, and the Planning Portal warns leaseholders they may need permission from the landlord or management company before any work.
- Read your lease or title for who owns and repairs the windows.
- Get written consent from the freeholder or managing agent.
- Tell each installer it is a flat, and ask whether they supply the drawings or specifications freeholders ask for.
Our guide to replacing windows in a leasehold flat covers the consent letter and who pays.
Get quotes for your flatFree, no obligation
Landlords
Landlord window quotes in Southampton: what the EPC rules need
Southampton landlords must already meet EPC band E to let, and the government aims for privately rented homes to reach band C by 2030. 29.2% of households in the city rent privately, against 20.3% across England and Wales.
Replacing old glazing is one of the measures an EPC assessor records, so ask every installer to state the U-value or window energy rating of each option on the quote.
Landlords with several lets should ask for one quote per property, so each EPC can be updated separately. The 2030 band C policy is still being designed.
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Article 4
New windows on Southampton's Article 4 streets
Seven Southampton conservation areas carry Article 4 directions that remove householder alteration rights, the rights that normally let you change windows without permission. Government planning data records them for:
- The Avenue
- Cranbury Place
- Carlton Crescent
- Uplands Estate
- Portswood Residents' Gardens
- Ethelburt Avenue
- Oakmount Triangle
The city has 44 conservation areas published in the same dataset. An eighth Article 4 direction controls houses in multiple occupation and does not touch windows. The council's own page does not spell out window wording for each direction, so read the direction for your street before ordering.
In these streets, changing the style or material of front windows can need planning permission, and like-for-like timber or sash may be expected. Ask each installer whether they have done conservation-area jobs in Southampton and will prepare drawings for an application, then compare heritage-style uPVC, timber and secondary glazing quotes side by side. Original sashes on these streets belong in a quote for sash window replacement or repair, not a standard casement price.
Get Article 4 street quotesFree, no obligation
Noise and weather
Acoustic and weather-rated glazing quotes in Southampton
Southampton Airport runs a Noise Insulation Scheme for eligible homes near its flight paths; the airport sits just over the city boundary in Eastleigh. Check whether your address falls inside the scheme's contour before paying for windows in full. Outside it, ask installers for acoustic glass (laminated, unequal pane thicknesses or a wider cavity) and the Rw sound reduction figure.
The city fronts Southampton Water, and exposed elevations take more wind and salt than sheltered streets. Ask for the window's weathertightness classification under BS 6375-1 and whether the hardware is rated for coastal use. Fareham's waterside homes at Warsash and Swanwick Shore need the same rating: see Fareham window quotes.
Get acoustic or coastal quotesFree, no obligation
Repair or replace?
Repair or replace in Southampton: a new window, or just new glass?
A Southampton window with a sound frame often needs only a new sealed unit, not a new window. Misted glass between the panes means the seal has failed; rotten timber, a warped frame or worn hinges and seals point to full replacement.
Ask every installer to price three options on the same quote:
- Repairs to hinges, handles, locks or seals.
- Sealed-unit (glass only) replacement for each misted pane.
- Full-frame replacement, with the U-value or window energy rating of each window.
Secondary glazing is a fourth option in two Southampton cases: Article 4 streets where the front windows have to stay as they are, and flats where the freeholder will not allow new frames. Ask for it priced next to replacement.
Compare repair and replacement quotesFree, no obligation
Before you sign
How to check a Southampton double glazing installer
Check a Southampton installer against the same proof local firms put on their own websites, and confirm each item yourself before the survey:
| Check | What good looks like | Where to confirm it |
|---|---|---|
| 1. Scheme registration | FENSA or CERTASS registered, so the job is certified under Building Regulations | The FENSA or CERTASS register, by name or postcode |
| 2. Company record | Active, with the trading history the firm claims and no recent liquidation | Companies House search |
| 3. Address | A real address you can visit, not just a mobile number | The quote, the company record and a map |
| 4. Guarantee | Written and insurance-backed; Which? recommends ten years | The quote; FENSA itself does not issue guarantees |
| 5. Reviews | Recent, dated reviews for jobs like yours | Google, Checkatrade, TrustATrader |
Then compare at least three written quotes for the same windows. Southampton City Council Trading Standards warns that doorstep crime often starts with traders who call unannounced, so never agree to work at the door. If you have already signed at home, our guide to the double glazing cooling-off period explains how to cancel.
Our guide on how to compare double glazing quotes lists what each quote must show, and our page on double glazing installers covers the survey. Outside the city, compare double glazing quotes UK-wide.
Areas this page covers
Southampton areas and postcodes this page covers
This page covers the Southampton City Council area, postcode districts SO14 to SO19, and the edge-of-city towns where many Southampton searches start:
| Postcode district | Areas |
|---|---|
| SO14 | City centre, St Mary's, Ocean Village |
| SO15 | Shirley, Freemantle, Banister Park |
| SO16 | Bassett, Lordshill, Millbrook, Redbridge |
| SO17 | Portswood, Highfield |
| SO18 | Bitterne, Bitterne Park, Swaythling |
| SO19 | Sholing, Woolston, Weston |
| Edge of the city | Eastleigh (SO50), Chandlers Ford (SO53), Hedge End and West End (SO30), Totton (SO40) |
The edge-of-city towns sit outside Southampton City Council, in Eastleigh borough and the New Forest district, so the city's Article 4 streets do not apply there. For those towns, see double glazing in Hampshire.
Nearby areas
FAQ
Double glazing in Southampton, answered
Is there a government grant for double glazed windows?
Southampton is on the July 2026 Warm Homes: Local Grant list, and glazing is an eligible measure. Homes near the airport can also check its Noise Insulation Scheme.
Is there an airport noise insulation scheme in Southampton?
Yes. Southampton Airport runs a Noise Insulation Scheme for eligible homes near its flight paths. Check your address against the scheme's contour on the airport's website.
Do I need permission to replace windows in my Southampton flat?
Usually, yes. The Planning Portal warns leaseholders they may first need permission from the landlord or management company, so check your lease. Flats also have no householder permitted development rights, so a change to the building's look can need planning permission from Southampton City Council.
Which Southampton streets have Article 4 directions?
Planning data records Article 4 directions in seven conservation areas: The Avenue, Cranbury Place, Carlton Crescent, Uplands Estate, Portswood Residents' Gardens, Ethelburt Avenue and Oakmount Triangle. Check the direction for your street with the council.
Which double glazing company is considered the best in the UK?
No single company is best for every home. The best quote prices the same windows, glass and guarantee as the others, from an installer whose FENSA or CERTASS registration you have checked yourself. Our guide on how to compare double glazing quotes shows how to line them up.
What should a landlord ask for on a double glazing quote?
Ask for the U-value or window energy rating of every window, priced per property. The EPC assessor needs that detail to record the upgrade against the band E minimum and the 2030 band C aim.
Is it worth replacing 20 year old double glazing?
It is worth a survey, because a 20-year-old window with a sound frame often needs only new sealed units. Worn frames, hinges or seals point to full replacement, so ask for glass-only and full-frame prices on the same quote.
What are the disadvantages of double glazing?
The main disadvantages of double glazing are the upfront cost, sealed units that mist when their seal fails, and a changed look on period streets. A tighter seal also means less background ventilation, so ask whether each window has trickle vents. In a flat the freeholder can refuse new frames, and on Southampton's seven Article 4 streets a change of style can need planning permission.
How much should I expect to pay for double glazing?
The price depends on the number of windows, the frame material and the glass, so compare written quotes, and see what double glazing costs in each UK region on our sister site.
Compare Southampton quotes for the same windows
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Sources
- ONS, Census 2021 tables TS044 (accommodation type) and TS054 (tenure): Nomis TS044, Nomis TS054
- GPDO 2015, article 2 (flats are not dwellinghouses for permitted development): legislation.gov.uk
- Planning Portal, doors and windows: planningportal.co.uk
- GOV.UK, private rented property minimum energy efficiency standard (updated 5 May 2026): gov.uk
- Conservation area and Article 4 direction data via planning.data.gov.uk (dataset flagged incomplete): planning.data.gov.uk
- Southampton City Council, conservation areas and the Portswood Residents' Gardens Article 4 direction
- Southampton Airport, Noise Insulation Scheme and policy (12 February 2024)
- Southampton City Council Trading Standards, doorstep crime: southampton.gov.uk
- DESNZ, Warm Homes: Local Grant successful local authorities (updated 2 July 2026): gov.uk
- BS 6375-1, the UK standard for window weathertightness (air, water and wind resistance)
- GOV.UK, competent person schemes (FENSA and CERTASS authorised for replacement windows): gov.uk
- FENSA, homeowner advice (certificates, guarantees, installer search): fensa.org.uk; CERTASS, compliance certificates: certass.co.uk
- Companies House, company search: gov.uk
- Which?, your rights when buying double glazing (ten-year insurance-backed guarantee): which.co.uk