Double glazing quotes in Kingston upon Thames
Get free double glazing quotes in Kingston from local installers who cover your KT postcode, for uPVC, aluminium, timber and steel windows, sealed units and repairs. Kingston's conservation guidance says 1920s and 1930s steel windows "can be replaced like-for-like as they are still in production".
33.7% of Kingston homes were built between 1919 and 1939, against 22.0% across London (VOA 2026)
- Free and no obligation, whichever quote you pick
- Steel, timber or uPVC, priced side by side
- Front and rear quoted separately in conservation areas
How it works
How Kingston quote requests reach installers
Tell us about the job
Property type, how many windows, frame material and when you want them fitted. It takes about a minute.
We confirm the details
A quick call checks what you need, then your enquiry goes to local installers who cover your postcode.
Compare like for like
Each installer surveys and quotes in writing. Check every quote against our quote comparison checklist before you sign anything.
What you can get quoted for
What you can get quoted for in Kingston
Kingston installers quote for replacement windows in four materials, glass-only units and repairs from one enquiry:
- uPVC and aluminium windows for houses outside the conservation areas, and for rear elevations where the design mimics the original;
- Steel replacement windows for 1920s and 1930s houses with Crittall-type frames;
- Timber sash and casement windows for Victorian and Edwardian streets;
- Sealed-unit replacement where a seal has failed and the glass has misted;
- Repairs to hinges, handles, locks and seals.
Ask the installer whether a door can go on the same quote.
Get Kingston window quotesFree, no obligation
Local factors
What changes a Kingston double glazing quote
Six things change a Kingston quote: inter-war steel windows, conservation areas, the front or rear elevation, the absence of window Article 4 directions, house size and energy ratings. Note which apply to your house before the survey.
| In Kingston | What it changes in your quote | Ask or check |
|---|---|---|
| 33.7% of properties built 1919 to 1939VOA 2026 | Steel frames, bays and leaded top lights | A steel quote beside uPVC or aluminium |
| Steel windows replaceable like for likeKingston Council | Steel stays an option in conservation areas | Whether the installer fits steel windows |
| 26 conservation areas, about 10,000 addressesKingston Council | Windows matched to the original design | Your address on the council map |
| Rear elevations only for uPVC or aluminiumKingston Council | Different windows front and back | Front and rear priced separately |
| 0 Article 4 directions on windowsKingston Council | No extra application on most houses | Listed status or a flat, the usual exceptions |
| 49.2% of homes at EPC band CONS | Window ratings decide the upgrade | The whole-window U-value on each line |
1930s homes
Steel and Crittall window quotes for Kingston's 1930s homes
A 1920s or 1930s Kingston house with metal windows can keep them as new steel windows made like for like. Kingston's Conservation Area General Guidance, adopted in June 2023, says: "Many 1920s and 30s buildings have steel or 'crittall' windows, which can be replaced like-for-like as they are still in production."
The borough has plenty of these houses. 33.7% of Kingston's 70,650 rated properties were built between 1919 and 1939, against 22.0% across London (VOA, 31 March 2026). 31.7% of households live in a semi-detached house, the 5th highest share in London (Census 2021).
- Ask whether the installer supplies and fits steel windows, or only uPVC and aluminium.
- Ask for the same glazing bar pattern and opening lights as the old frames.
- Ask for the whole-window U-value of the steel option and of any alternative, in writing.
Outside a conservation area, aluminium is another route to a slim frame: see aluminium window installers for the questions to ask.
Get steel window quotesFree, no obligation
Planning
Do you need planning permission for new windows in Kingston?
Most Kingston houses need no planning permission for similar new windows, because none of Kingston's three Article 4 directions covers windows. They cover the Seething Wells filter beds, changes from commercial to residential use, and North Lodge and South Lodge.
In the conservation areas, the council's guidance draws the line at like for like. A like-for-like replacement "will generally not require planning permission" when it matches the existing window in "composition, texture, colour and finish; dimensions; pattern and arrangement; detailing". A change of design is different: "Planning permission may be needed."
Flats, listed buildings and new bays follow the national rules, set out in planning permission for windows.
Get quotes for a Kingston houseFree, no obligation
Conservation areas
Window quotes in Kingston conservation areas: front and rear
A house in one of Kingston's 26 conservation areas needs windows that match the original at the front, while uPVC or aluminium may pass at the back. The areas cover 9.4% of the borough, about 10,000 addresses, from Kingston Old Town and Surbiton Hill Park to Old Malden and Kingston Vale.
- Front windows: "Replacements should match the original design, material, finish, profiles and detailing, especially for visible windows."
- Rear windows: the guidance considers uPVC or aluminium on rear elevations when the design mimics the original, though it says these materials "harm historic character".
- Glass: the council names "slimline, vacuum, or laminated glazing" as ways to upgrade thermal performance.
- Earlier uPVC: "Pre-existing later changes, such as uPVC or aluminum windows or doors ... do not justify further inappropriate development."
Ask installers for front and rear as separate lines, and for timber sash or casement prices on the front. Our pages on sash window replacement and wooden window replacement compare the timber options.
Get front and rear window quotesFree, no obligation
Kingston homes
Replacement windows for Kingston's semis and detached houses
Kingston is a borough of owner-occupied houses, so most quotes here cover a whole house rather than a flat.
| Measure | Kingston | London |
|---|---|---|
| Households in a house | 61.5% | 45.9% |
| Households in a detached house | 12.6% | 6.1% |
| Owner occupied | 60.9% | 45.2% |
| EPC band C or above, all homes | 49.2% | 57.9% |
| EPC band C or above, homes built 1930 to 1982 | 40.9% | 45.2% |
Kingston's detached share is the 3rd highest of London's 33 councils. Fewer than half of its homes reach EPC band C, so ask every installer for the whole-window U-value or Window Energy Rating of each window on the quote.
Get energy-rated window quotesFree, no obligation
Repair or replace?
Repair or replace? Broken seals and steel frames in Kingston
Repair or reglaze a Kingston window when the frame is sound, and replace it when the frame has failed. Google's carousel for double glazing in Kingston leads with a directory of repair services. A Kingston glazier in the local map results is reviewed for replacing a unit with a broken seal (8 October 2026).
| Your window | Route | Ask the installer |
|---|---|---|
| Broken seal, misted glass, sound frame | Replacement sealed unit | How long the new unit is guaranteed |
| Original steel frame, sound but draughty | Repair or secondary glazing | A repair price beside a steel replacement |
| Corroded steel or failed uPVC frame | Full replacement | Whether the house sits in a conservation area |
Our page on window replacement London lays out glass-only, repair and full-frame work side by side.
Get Kingston repair or replacement quotesFree, no obligation
Before you sign
How to check a Kingston installer
Check a Kingston installer on three public records before the survey: its scheme registration, its company record and its guarantee.
- Search fensa.org.uk or certass.co.uk for the firm's registration.
- Check Companies House for the company named on the quote and when it was formed.
- Ask for an insurance-backed guarantee in writing, naming the insurer and its length.
If you sign at home, you usually have at least 14 days to cancel, but made-to-measure windows can be an exception, so check the contract before you sign. See the double glazing cooling off period guide for how to cancel, and how to choose a double glazing installer for every check.
Areas
Kingston, Surbiton and New Malden: areas this page covers
This page is about the Royal Borough of Kingston upon Thames, from Kingston Vale and Coombe in the north to Chessington in the south. Installers see your enquiry only if they cover the postcode you enter, so cover differs from street to street. We are a free quote-matching service, not an installer.
| Postcode district | Places |
|---|---|
| KT1 (part) | Kingston town centre, Norbiton, Canbury |
| KT2 (part) | Kingston Hill, Coombe, Tudor |
| KT3 (part) | New Malden, Old Malden |
| KT5 | Surbiton, Berrylands |
| KT6 (part) | Surbiton, Tolworth |
| KT9 (part) | Chessington |
| KT4, SW15 and SW20 (part) | Worcester Park, Kingston Vale, Coombe Hill |
Nearby areas
FAQ
Double glazing in Kingston: questions answered
Which is the best double glazing company in the UK?
No double glazing company carries an official UK ranking, and we do not rank installers. Compare written quotes for the same windows, and check each firm's FENSA or CERTASS registration, company record and guarantee.
Can I replace Crittall windows like for like in Kingston?
Yes. Kingston's conservation guidance says 1920s and 1930s steel or Crittall windows "can be replaced like-for-like as they are still in production".
Can I fit uPVC windows in a Kingston conservation area?
Only at the back. Kingston's guidance considers uPVC or aluminium on rear elevations when the design mimics the original, and expects front windows to match the original design and material.
Does Kingston have Article 4 directions on windows?
No. Kingston's three Article 4 directions cover the Seething Wells filter beds, commercial to residential changes of use, and North Lodge and South Lodge, not windows.
Is it worth replacing 20 year old double glazing?
Replacing 20 year old double glazing is worth it when the frame has failed. A Kingston window with a broken seal in a sound frame needs only a new sealed unit.
Is there a cheaper alternative to double glazing?
The two alternatives to new double glazed windows are secondary glazing behind the existing window and a new sealed unit in a sound frame. Kingston's guidance says secondary glazing "offers better thermal performance than draught-proofing and suits difficult-to-seal windows".
How much should I expect to pay for double glazing?
The figure depends on window count, material, steel or timber work and access. Ask for itemised quotes, and see what double glazing costs in London on our sister site.
Compare Kingston quotes for steel, timber or uPVC
Tell us the house, the window count and the frame you want, and mention steel frames or a conservation area. Local installers who cover your KT postcode survey and quote in writing. Leasehold and airport schemes are covered on double glazing quotes in London.
Get free quotes
Sources
Figures checked 8 October 2026.
- Royal Borough of Kingston upon Thames, Conservation Area General Guidance (adopted June 2023)
- Royal Borough of Kingston upon Thames, conservation areas and Article 4 directions
- Valuation Office Agency, Council Tax stock of properties 2026, table CTSOP4.1 (31 March 2026)
- ONS, Census 2021 tables TS044 accommodation type and TS054 tenure
- ONS, EPC band C or above, England and Wales, tables 1c, 2a and 2c, to March 2025
- FENSA, fensa.org.uk; CERTASS, certass.co.uk; Companies House, company search
- Postcode districts: postcodes.io outcode lookup (ONS Postcode Directory), checked 8 October 2026