Double glazing quotes in Richmond upon Thames
Compare free double glazing quotes in Richmond upon Thames from local installers who cover your TW, SW13 or SW14 postcode, for timber double glazed sashes, secondary glazing, replacement windows and repairs. Most of the borough's 85 conservation areas feature timber sash windows, so name your street before anyone surveys.
37.8% of the borough's properties were built before 1919, against 29.1% across London
- Free and no obligation. Compare before you commit
- Timber, sash and secondary glazing on one enquiry
- Article 4 streets checked against the council list
How it works
How Richmond double glazing quotes reach you
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 Richmond upon Thames
Richmond installers quote for period and modern windows alike:
- Timber sash and casement windows, double glazed, for conservation area homes;
- Double glazed units fitted into timber frames you keep;
- Secondary glazing behind original sashes or steel windows;
- Replacement windows in uPVC, aluminium or timber where no controls apply;
- Sealed units and repairs for misted glass, cords, hinges and locks.
Ask the installer whether a door can go on the same quote.
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Local factors
What changes a Richmond double glazing quote
Six things change a Richmond quote: Article 4 streets, conservation areas, period frames, low energy ratings, the paperwork for conservation work, and flats. Each one changes the product or the consent before a price is fixed.
| In Richmond | What it changes in your quote | Ask or check |
|---|---|---|
| 119 Article 4 street directionsRichmond Council | Planning permission for new doors and windows | Your street on the council list |
| 85 conservation areasRichmond Council | Timber frames, often sashes, to match | A timber option on every quote |
| 37.8% of properties built before 1919VOA 2025 | Box sashes to repair, glaze or replace | Whether they overhaul sashes too |
| 44.9% of homes at EPC C or aboveONS | Windows an assessor will flag | The whole-window U-value in writing |
| No FENSA certificate for conservation area windowsRichmond Council | Different paperwork at the end of the job | What the installer hands over instead |
| 39.9% of households in flats or conversionsCensus 2021 | No permitted development rights for windows | Freeholder consent and the application |
Article 4 streets
Is your Richmond street under an Article 4 direction?
Richmond lists 119 Article 4 directions across 42 of its conservation areas, and on those streets "you must apply for planning permission" for changes that include "New doors and windows". The council's list was updated on 18 June 2026.
| Area | Examples of streets with a direction |
|---|---|
| Twickenham and St Margarets | Lebanon Park, Montpellier Row, Grosvenor Road, Holly Road, Trafalgar Road, Strawberry Vale, Waldegrave Park, St Margaret's Road |
| Teddington | Cambridge Road, Clarence Road, Fieldend, Field Lane, Grove Terrace, Kingston Road |
| Kew | Gloucester Road, Priory Road, The Green, Lawn Crescent, Cambridge Cottages |
| Richmond | Houblon Road, Montague Road, Mount Ararat Road, Rosemont Road, Sydney Road, The Vineyard |
| Barnes, Mortlake and East Sheen | Laurel Road, Ranelagh Avenue, Castelnau Row, Fitzgerald Road, Lodge Avenue, East Sheen Avenue, The Mall |
| Hampton, Hampton Hill and Hampton Wick | Oldfield Road, Rosehill, Station Road, High Street (Hampton Hill), High Street (Hampton Wick) |
- Find your street and house number on the council's Article 4 list.
- Ask installers whether they prepare the drawings and the planning application.
- Ask for timber windows that copy the original glazing pattern.
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What the council accepts
Timber double glazing or secondary glazing: what Richmond Council accepts
Richmond Council accepts timber frames with double or triple glazed units, and encourages secondary glazing, in its conservation areas. Its conservation FAQ says that "Double and triple glazing can be inserted into timber frames", with "a more visually acceptable appearance that is unlikely to require planning permission".
- Repair first: "It is encouraged that residents retain and repair existing original timber or crittal windows and doors wherever possible."
- Timber replacements: the council calls replacement timber frames "not only the most appropriate option, but a natural material".
- Secondary glazing: the council encourages it "as it forms an unobtrusive option".
Ask every installer for a timber double glazed price and a secondary glazing price on the same visit. A quote that offers only uPVC for a conservation area front is not comparing like with like.
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Paperwork
FENSA certificates and trickle vents in Richmond conservation areas
Replacement windows in a Richmond conservation area or listed building come without a FENSA certificate, according to the council. Its FAQ says such windows "do not need to meet Part F". It adds: "In such cases a FENSA certificate will not be issued for replacement windows, but since such properties are exempt from Part F a certificate would not be required."
The council notes that "On selling or buying property a solicitor will usually ask for a FENSA certificate if windows have been replaced". For exempt buildings, "you will not need to provide a certificate or request one from the vendor of a property". On ventilation, it is "unlikely to approve the use of conventional surface mounted trickle vents", while vents "hidden in sash boxes and casement frames" can be acceptable.
- Ask each installer what paperwork you get at the end: the planning decision, a written specification and the guarantee.
- Ask whether the quote includes trickle vents, and whether they are hidden in the frame.
- Keep the paperwork for the day you sell.
Period windows
Sash window quotes in Twickenham, Kew and Richmond
Sash windows are the standard Richmond job: 37.8% of the borough's properties were built before 1919, and the council says "The majority of conservation areas within the borough feature traditional timber framed sash windows".
| Measure | Richmond upon Thames | London |
|---|---|---|
| Properties built before 1919 | 37.8% | 29.1% |
| Properties built 2000 or later | 8.4% | 17.9% |
| EPC band C or above, all homes | 44.9% | 57.9% |
| EPC band C or above, homes built before 1929 | 25.6% | n/a |
| Households owning their home | 62.4% | 45.2% |
With only a quarter of pre-1929 homes at EPC band C, the window is often the weak point an assessor flags. Ask each installer for the whole-window U-value, whether they overhaul box sashes as well as replace them, and for a slim double glazed unit in a timber sash as one of the options. Our page on sash window replacement compares timber, uPVC and refurbishment.
Get Twickenham and Kew sash quotesFree, no obligation
Flats
Window quotes for Richmond flats: permission first
A Richmond flat needs planning permission and the freeholder's consent before new windows. The council states that "flats and houses converted to flats do not benefit from permitted development rights". 39.9% of the borough's households live in a flat, maisonette or converted building, including 8.8% in a converted or shared house (Census 2021).
Our guide to replacing windows in a leasehold flat covers the lease and the licence, and the planning permission for windows checker covers the general rules.
Aircraft noise
Acoustic glass quotes for Barnes and Mortlake
Barnes homes hear Heathrow traffic: the airport's Noise Action Plan says "a long single spur of the 55 dB Lden contour extends over Barnes and Fulham to the east". Ask installers for laminated acoustic glass in new windows, or secondary glazing behind period sashes, and for the glass build-up in writing.
Repair or replace?
Repair or replace windows in Richmond?
Repair Richmond's original timber and steel windows where they can be saved, and replace only failed frames. That is the council's own order: retain and repair "wherever possible", then timber replacements.
| Your window | Route | Ask the installer |
|---|---|---|
| Original sash, sound frame | Overhaul, draught-strip or secondary glazing | A repair price beside a replacement price |
| Sound timber frame, single glazed | Double glazed units fitted into the frame | Whether the frame takes the extra weight |
| Misted double glazed unit | New sealed unit | The guarantee on the unit |
| Rotten frame on an Article 4 street | Timber replacement, with permission | The application in the quote |
Our page on window replacement in London sets out both routes in full.
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Before you sign
How to check a Richmond double glazing company
Check a Richmond installer's past conservation work as well as its registrations, because FENSA paperwork does not cover every job here. London Trading Standards "strongly advises residents never to deal with cold callers on your doorstep".
- Search the firm on the FENSA or CERTASS register for non-conservation jobs.
- Ask for the planning reference of a past Article 4 or conservation area job in the borough.
- Check the company named on the quote on Companies House.
- Get the insurance-backed guarantee in writing.
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. The double glazing cooling off period guide explains the detail, and how to compare double glazing quotes shows what to line up.
Areas
Areas this page covers in Richmond upon Thames
This page is about the London Borough of Richmond upon Thames, on both banks of the river from Barnes to Hampton. Enter your postcode in the form to see whether a local installer covers it. We are a free quote-matching service, not an installer.
| Postcode district | Places |
|---|---|
| TW9 | Richmond, Kew, North Richmond |
| TW10 | South Richmond, Ham, Petersham |
| TW1 | Twickenham, St Margarets |
| TW2 | West Twickenham, Whitton |
| TW11 | Teddington, Hampton Wick |
| TW12 | Hampton, Hampton Hill |
| SW13 and SW14 | Barnes, Mortlake, East Sheen |
Nearby areas
FAQ
Double glazing in Richmond: questions answered
Do I need planning permission for double glazing in Richmond?
You need planning permission for new windows on any of Richmond's 119 Article 4 streets and in every flat. Elsewhere in a conservation area, the council says timber frames with double glazed units are "unlikely to require planning permission".
Can I fit uPVC windows in a Richmond conservation area?
Richmond Council steers conservation area homes to timber, calling replacement timber frames "not only the most appropriate option, but a natural material", so ask for timber prices for a period front.
Will I get a FENSA certificate for new windows in a conservation area?
No. Richmond Council says a FENSA certificate "will not be issued" for replacement windows in conservation areas and listed buildings, because they are exempt from Part F, and that no certificate is then required.
Is it worth replacing 20 year old double glazing?
Replacing 20 year old double glazing in Richmond is worth it when the frame has failed; a sound timber frame can take new double glazed units instead, which the council accepts.
What is the 25% glazing rule?
The 25% glazing rule limits the windows, rooflights and doors in a house extension to 25% of the extension's floor area, plus the area of any windows the extension covers (Approved Document L, paragraph 10.7). It does not apply to like-for-like replacement windows.
How much should I expect to pay for double glazing?
The price depends on timber or uPVC, sash or casement, and any planning work, so compare itemised quotes and read what conservation area windows cost on our sister site.
Check your street, then compare Richmond quotes
Tell us the property, the number of windows and whether they are sashes. Installers who cover your TW, SW13 or SW14 postcode arrange a survey and send written prices. For other boroughs, see double glazing quotes in London.
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Sources
Figures checked 8 October 2026.
- Richmond Council, Article 4 directions in conservation areas (updated 18 June 2026)
- Richmond Council, conservation areas FAQ (updated 3 June 2026)
- Heathrow, Noise Action Plan 2024 to 2028, supporting annexes (Annex 12)
- Valuation Office Agency, Council Tax stock of properties 2025, table CTSOP4.1
- ONS, Census 2021 tables TS044 accommodation type and TS054 tenure
- ONS, EPC band C or above, England and Wales, tables 2a and 2c, to March 2025
- MHCLG, Approved Document L, Volume 1: Dwellings (2021 edition incorporating 2023 amendments), paragraph 10.7
- London Trading Standards, doorstep crime campaign (18 May 2022)
- FENSA, fensa.org.uk; CERTASS, certass.co.uk; Companies House, company search