Double glazing quotes in Norwich
Compare free quotes from local installers who cover your NR postcode, for replacement windows, sash, glass-only units and repairs. More than a third of Norwich households live in flats, so permission from a freeholder or the council often comes before the first survey.
35.9% of Norwich households live in flats, against 21.7% across England and Wales (Census 2021)
- Local installers who cover Norwich postcodes
- Landlords can request quotes as well as owners
- Free, no obligation. Nothing to pay to compare
How it works
How to get double glazing quotes in Norwich
Get your consents in hand, then send one enquiry.
Describe the property
Flat or house, window count, frame material and timing. Landlords tick that option.
One confirmation call
A quick call checks the job, then it goes to local installers who cover your Norwich postcode.
Quote to the agreed spec
Give each installer the freeholder's or council's spec. Compare the written quotes on rating and guarantee.
Window replacement
Window replacement in Norwich: what you can get quoted for
Norwich quotes cover window replacement, new glass in existing frames and repairs, for owners, leaseholders and landlords alike. Pick the job before you fill in the form:
- Replacement windows in uPVC, aluminium or timber, casement or sash
- Like-for-like windows for flats, built to the freeholder's or the council's written spec
- Several properties at once, for landlords who want one survey round
- Glass-only replacement of misted sealed units in sound frames
- Repairs to hinges, handles, locks and seals
Doors depend on the firm, so ask the installer whether they fit composite, uPVC or patio doors.
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Local factors
What changes a Norwich double glazing quote
Five things change a Norwich quote: flat consent, letting, Article 4 streets, the age of the house and which council you are in. Settle yours before you book.
| In Norwich | What it changes in your quote | Ask or check |
|---|---|---|
| 35.9% of households in flatsCensus 2021 | A change of look can need permission, plus freeholder consent | The freeholder's written spec and the council's flat-window order |
| 26.9% of households rent privatelyCensus 2021 | A let cannot fall below EPC band E | The U-value or WER of every window |
| 17 conservation areas, some with Article 4Norwich City Council | A new window can need permission, even on a house | Your address on the council's Article 4 page |
| 22.3% of properties built before 1919VOA | Original sash or timber casements are more common | A sash or heritage-style quote next to a casement |
| Broadland and South Norfolk suburbsCouncil areas | The city's Article 4 list and flat-window order do not apply | Window rules with your own council |
Flats
Replacement windows for Norwich flats
A Norwich flat owner gets written consent first and quotes second. The 2021 Census puts 35.9% of Norwich households in flats, including 4.8% in converted houses or other buildings, against 21.7% across England and Wales.
Flats carry two extra hurdles. Householder permitted development does not apply to a building containing flats (GPDO 2015, article 2), so a replacement that changes the look can need planning permission. Leaseholders also need the freeholder's or managing agent's written consent before work starts.
Norwich City Council has a Local Development Order for replacement windows and doors in flats, with a guidance note. Read both, then get the freeholder's required spec in writing and give it to every installer. Our guide to replacing windows in a leasehold flat walks through the consent steps.
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Landlords
Window quotes for Norwich landlords and the EPC
Norwich landlords need windows that help a let clear the EPC rules. 26.9% of Norwich households rent privately, against 20.3% across England and Wales (Census 2021).
A privately rented home cannot be let below EPC band E. The government aims for as many as possible to reach band C or equivalent by 2030, with the policy design still in progress (GOV.UK landlord guidance, updated 5 May 2026). Only 55.8% of Norwich homes with an EPC reach band C or above (ONS, to March 2025).
- Ask for the U-value or Window Energy Rating of every window, so the EPC assessor can record it.
- Ask installers to quote several properties together if you own more than one.
- Check the lease on any flat you let before you order.
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Article 4
Window quotes on Norwich Article 4 streets: Bracondale, Heigham Grove and more
Norwich City Council's conservation area Article 4 directions "limit small changes such as changing windows" on named streets. The council's list includes:
- Bracondale 19th century terraces
- Bracondale 20th century housing
- Bishopgate
- Calvert Street
- Heigham Grove, including West Parade
On those streets a new window can need planning permission even on a house. Norwich has 17 conservation areas, according to the council, and 1,041 entries on the Historic England list (62 of them grade I). Check your address against the council's Article 4 page, then ask installers for conservation-area jobs they have done in Norwich.
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Older homes
Sash and timber window quotes for older Norwich houses
Original sash or timber casements are more common in Norwich than average. 22.3% of Norwich properties were built before 1919 (Valuation Office Agency, 31 March 2026), against 20.6% across England and Wales.
Ask for a sash or heritage-style quote (timber, or uPVC sash where allowed) next to a standard casement. Our guide to sash window replacement covers restoring versus replacing sashes.
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Repair or replace
Repair or replace your Norwich windows?
Repair a Norwich window when the frame is sound and only the glass, seals or hardware have failed; replace it when the frame is rotten, warped or will not close. A misted pane is a failed sealed unit, and a new unit fits the existing frame.
Consent tips the balance in Norwich: a replacement that changes the look of a flat, or of a house on an Article 4 street, can need permission. Ask the council and the freeholder which work counts as a change first.
Landlords weigh the EPC as well, because a repair does not give the assessor a new U-value to record. Ask for a repair price and a replacement price with the rating stated, then compare.
Thirty-year-old double glazing is the strongest case for replacement. Replacement windows in England must now reach a U-value of 1.4 W/(m2.K) or Window Energy Rating band B (Approved Document L). That standard came long after 1990s units were fitted, so ask each installer to state the new figure.
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Before you sign
How to check a Norwich installer before the survey
Check a Norwich installer in five steps before anyone visits, because a name on a shortlist is not proof of good work:
- Find the firm on the scheme register. Search FENSA or CERTASS by name or postcode. Both are government-authorised, and a registered installer certifies the job under Building Regulations.
- Look the company up on Companies House. Confirm it is active, see when it was incorporated, and check for earlier names or a liquidation.
- Get the guarantee in writing. Ask whether it is insurance-backed: FENSA does not issue guarantees, and Which? recommends a ten-year insurance-backed guarantee. Our guide to a double glazing company going bust shows why that cover matters.
- Read recent reviews. Use Google, Checkatrade and TrustATrader, and look for dated reviews of jobs like yours in Norwich.
- Collect three written quotes to the same spec. Line them up with our guide on how to compare double glazing quotes.
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 why.
Norfolk County Council Trading Standards issued a warning about doorstep cold callers in June 2025. Arrange surveys yourself and never sign on the doorstep. If a salesman does visit, take our list of what to ask a double glazing salesman.
Areas this page covers
Norwich areas and postcodes this page covers
This page covers Norwich and its suburbs across postcode districts NR1 to NR8:
| Postcode district | Areas | Council |
|---|---|---|
| NR1 | City centre, Thorpe Hamlet, Lakenham | Norwich City |
| NR2 | City centre, Heigham, the Golden Triangle | Norwich City |
| NR3 | Mile Cross, Sewell, Catton Grove | Norwich City |
| NR4 | Eaton, University, Cringleford | Norwich City, South Norfolk |
| NR5 | Earlham, Bowthorpe, New Costessey | Norwich City, South Norfolk |
| NR6 | Hellesdon, Old Catton | Broadland |
| NR7 | Sprowston, Thorpe St Andrew | Broadland |
| NR8 | Drayton, Taverham | Broadland |
The suburbs sit outside Norwich City Council: Hellesdon, Sprowston and Thorpe St Andrew are in Broadland, and Costessey is in South Norfolk. The city's Article 4 list and flat-window Local Development Order do not apply there, so check with your own council. Essex works the same way, with each district rather than the county deciding window planning, as our page on double glazing in Essex explains.
Nearby areas
FAQ
Norwich double glazing questions
Who will contact me after I ask for quotes?
You get a quick call first to confirm the job. Local installers who cover your postcode then contact you to arrange a survey and a written quote.
Are there grants for double glazing in Norwich?
Norwich City Council runs Warm Homes: Local Grant, and glazing is an eligible measure. The council's Warm Homes: Local Grant page explains who qualifies.
Do I need permission to replace windows in a Norwich flat?
A Norwich flat usually needs the freeholder's written consent, and a change of look can need planning permission because flats have no householder permitted development rights. Read Norwich City Council's Local Development Order for flat windows first.
Which Norwich streets have Article 4 directions on windows?
Norwich City Council lists Article 4 directions that limit changing windows in areas including Bracondale, Bishopgate, Calvert Street and Heigham Grove. The full list is on the council's Article 4 page.
What are some reputable double glazing companies in Norfolk?
We do not rank Norfolk firms. A reputable one shows up on the FENSA or CERTASS register, has an active Companies House record and gives an insurance-backed guarantee in writing, as set out in the checks above.
Which double glazing company is considered the best in the UK?
No single company is the best for every home. The best quote prices the same windows, glass and guarantee as the others, from an installer you have checked on the FENSA or CERTASS register.
Is it worth replacing 30 year old double glazing?
Replacing 30-year-old double glazing is usually worth pricing, because new replacement windows in England must reach a U-value of 1.4 W/(m2.K) or band B. Ask for a sealed-unit price as well where the frames are sound.
Is it worth replacing 20 year old double glazing?
Replacing 20-year-old double glazing is worth it when the frames are rotten, warped or will not close; misted units in sound frames need only new sealed units.
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 houses. Ask about trickle vents too, because a better seal lets less fresh air in. In Norwich, flats need the freeholder's consent and Article 4 streets can need planning permission, which can rule out a straight swap.
How much should I expect to pay for double glazing?
Expect a Norwich price to follow the window count, the material, sash or casement style and any flat or Article 4 consent work, so compare written quotes for the same spec.
What is the average cost of double glazing windows in the UK?
The average cost depends on the window count, frame material and glass, and our sister site sets out what double glazing costs in each UK region.
Get Norwich quotes once your consents are clear
Flat, rental or Article 4 street, compare written quotes for the same spec. Read about double glazing installers, see replacing windows in a leasehold flat, or go back to compare double glazing quotes.
Get free Norwich quotes
Sources
- Census 2021, TS044 accommodation type and TS054 tenure (Nomis): TS044, TS054
- The Town and Country Planning (General Permitted Development) (England) Order 2015, article 2: legislation.gov.uk
- Norwich City Council, Local Development Orders (replacement windows and doors in flats): norwich.gov.uk
- GOV.UK, domestic private rented property minimum energy efficiency standard, landlord guidance (updated 5 May 2026): gov.uk
- ONS, EPC band C or above, England and Wales, table 2a: ons.gov.uk
- Norwich City Council, Article 4 directions in conservation areas: norwich.gov.uk
- Norwich City Council, conservation areas: norwich.gov.uk
- Historic England list via planning.data.gov.uk: planning.data.gov.uk
- VOA, Council Tax: stock of properties 2026, table CTSOP4.1: gov.uk
- Norwich City Council, Warm Homes: Local Grant: norwich.gov.uk
- Eastern Daily Press, Norfolk Trading Standards doorstep cold caller warning (6 June 2025): edp24.co.uk
- 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
- Approved Document L, Volume 1 (2021 edition incorporating 2023 amendments), replacement window U-value 1.4 W/(m2.K) or WER band B: gov.uk