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Double glazing in Colchester

£2,260 to £12,580 installed, and 40% of homes in the council area rated EPC D to G.

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By Home Energy Quotes · Updated September 2026 · Colchester, Essex

Double Glazing in Colchester

What double glazing costs in Colchester

4–6 windows

£2,260–£3,730

Saves up to £65 a year. Pays back in about 46 years.

Full house (most common)

£4,390–£7,450

Saves up to £111 a year. Pays back in about 53 years.

Large home package

£7,660–£12,580

Saves up to £169 a year. Pays back in about 60 years.

Source: Home Energy Quotes Cost Index, costs modelled March 2026, savings at the October to December 2026 price cap. Prices are estimates and include installation and VAT. Actual costs may vary.

Colchester in numbers

Published statistics for the Colchester council area, not our estimates.

40% of homes with an EPC in the Colchester council area are rated D to G, and the median energy score is 71, which is band C. At the 2021 Census, 69.9% of households in the Colchester council area used mains gas as their only central heating, 6.2% oil only and 11.7% electricity only.

Colchester council areaFigureSource
Homes with an EPC rated D to G40%ONS, EPCs lodged to March 2025
Median EPC energy score71 (band C)ONS, EPCs lodged to March 2025
Households on mains gas heating only69.9%Census 2021, ONS
Electricity network operatorUK Power Networks (East England)NESO licence area boundaries

These are published official statistics for the Colchester council area, which covers Colchester, not Home Energy Quotes estimates. Sources checked 6 October 2026.

Grants and funding in Colchester

No general glazing grant

There is no general grant for double glazing in Colchester, and windows do not qualify for 0% VAT. Councils delivering the Warm Homes: Local Grant can include double glazing in upgrades for eligible lower-income homes with an EPC rating of D to G.

Source: GOV.UK — Warm Homes: Local Grant

Standard VAT

Double glazing is not on HMRC's list of energy-saving materials, so 20% VAT applies and is inside the prices above.

Source: HMRC — VAT Notice 708/6

Warm Homes: Local Grant

The council is part of a Warm Homes: Local Grant consortium led by Essex, allocated £6,000,000 in principle across the consortium for April 2025 to March 2028. Income and EPC rules apply.

Source: DESNZ, list updated July 2026

Is Colchester a good place for double glazing?

The area’s housing stock includes a range of properties suited to double glazing installations throughout Colchester. Combined with East England’s energy prices, double glazing installations here may offer good value (individual results will vary).

Colchester has a population of 188,000, and the area falls within the East England region. We recommend getting at least 3 quotes to compare prices.

Colchester

Find Installers in Colchester

We recommend getting at least 3 quotes from qualified installers before making a decision. Check reviews, ask for local references, and make sure warranties are clearly stated in writing.

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What to check before hiring an installer in Colchester

  • Qualifications — check the installer holds relevant qualifications and certifications for double glazing before signing any contract
  • Local references — ask for completed jobs in Colchester or Essex
  • Reviews — check online reviews before committing
  • Warranty — product and workmanship warranties should be clearly stated in writing
  • 3 quotes minimum — we recommend comparing at least three quotes to ensure you get a fair price
Double Glazing installer in Colchester

Questions about double glazing in Colchester

How much does double glazing cost in Colchester?
Double Glazing in Colchester costs between £2,260 and £12,580 installed, depending on system size. A typical mid-range system costs around £6,250 including installation and VAT (modelled estimate).
How energy efficient are homes in Colchester?
40% of homes with an EPC in the Colchester council area, which covers Colchester, are rated D to G, and the median energy score is 71, which is band C.
Is there a grant for double glazing in Colchester?
There is no general grant for double glazing in Colchester, and windows do not qualify for 0% VAT. Councils delivering the Warm Homes: Local Grant can include double glazing in upgrades for eligible lower-income homes with an EPC rating of D to G.
How long is the payback period in Colchester?
The estimated payback period in Colchester is typically around 60 years, based on estimated savings of up to £104 a year for a typical home. Actual payback depends on your number of windows, property size and current glazing type.
Do I need planning permission in Colchester?
Most double glazing installations fall under permitted development rights and do not require planning permission. However, listed buildings, conservation areas and flats may need approval. Always check with your local planning authority in Colchester before installation.
How do I find a good installer in Colchester?
We recommend getting at least 3 quotes from qualified installers. Check online reviews and verify that the installer holds relevant qualifications before signing any contract.

Get quotes for your home in Colchester

Up to three approved installers who cover Colchester may contact you. Free, no obligation.

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Colchester on the map

Map of Colchester, Essex
Colchester, Essex and the surrounding area.

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Last reviewed: . Costs are modelled estimates from the Home Energy Quotes Cost Index — see how we calculate them. Grant rates are checked against GOV.UK.