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Conservatory roofs in London

£2,850 to £11,540 installed, and 36% of homes in the council area rated EPC D to G.

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By Home Energy Quotes · Updated September 2026 · London, Greater London

Conservatory Roofs in London

What a new roof costs in London

Small (up to 3m)

£2,850–£4,590

We don’t publish a saving figure for this upgrade.

Medium (3–4m) (most common)

£5,090–£7,160

We don’t publish a saving figure for this upgrade.

Large (4m+)

£7,920–£11,540

We don’t publish a saving figure for this upgrade.

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.

London in numbers

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

36% of homes with an EPC in the Westminster council area are rated D to G, and the median energy score is 71, which is band C. At the 2021 Census, 56.2% of households in the Westminster council area used mains gas as their only central heating, 0.5% oil only and 18.5% electricity only.

Westminster council areaFigureSource
Homes with an EPC rated D to G36%ONS, EPCs lodged to March 2025
Median EPC energy score71 (band C)ONS, EPCs lodged to March 2025
Households on mains gas heating only56.2%Census 2021, ONS
Electricity network operatorUK Power Networks (London)NESO licence area boundaries

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

Grants and funding in London

No conservatory roof grant

There is no government grant for conservatory roof replacement in London, and a replacement roof does not qualify for 0% VAT on energy-saving materials.

Source: HMRC — VENSAV3270

Standard VAT

Conservatory roofs are 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 Greater London Authority, allocated £53,470,024 in principle across the consortium for April 2025 to March 2028. Income and EPC rules apply.

Source: DESNZ, list updated July 2026

Is London a good place for conservatory roofs?

London receives an average of 1625 hours of sunshine per year — slightly above the UK average of 1,493 hours. Combined with South East’s energy prices tracking the UK average, conservatory roofs installations here may offer good value (individual results will vary).

London has a population of 8,900,000, and the area falls within the South East region. We recommend getting at least 3 quotes to compare prices.

London

Find Installers in London

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 London

  • Qualifications — check the installer holds relevant qualifications and certifications for conservatory roofs before signing any contract
  • Local references — ask for completed jobs in London or Greater London
  • 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
Conservatory Roofs installer in London

Questions about conservatory roofs in London

How much do conservatory roofs cost in London?
Conservatory Roofs in London cost between £2,850 and £11,540 installed, depending on system size. A typical mid-range system costs around £6,040 including installation and VAT (modelled estimate).
How energy efficient are homes in London?
36% of homes with an EPC in the Westminster council area, which covers London, are rated D to G, and the median energy score is 71, which is band C.
Is there a grant for conservatory roofs in London?
There is no government grant for conservatory roof replacement in London, and a replacement roof does not qualify for 0% VAT on energy-saving materials.
How long is the payback period in London?
We don’t publish a payback for conservatory roofs: no official source gives a reliable yearly saving. How we calculate costs explains why.
Do I need planning permission in London?
Most conservatory roofs 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 London before installation.
How do I find a good installer in London?
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 London

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

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Conservatory Roofs in nearby towns

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.