What do roof lanterns in Chelsea involve?
Thinking about roof lanterns in Chelsea? The short answer: hipped glass lanterns that lift the ceiling of orangeries and extensions. The longer answer depends on your roof, which is why we survey before we price.
Many London roofs are reached only through the house or over neighbouring property, so lifting heavy glass is planned at survey rather than on the day. Roof lanterns suit orangeries, kitchen-diners and single-storey extensions.
Chelsea sits about 2 km from Battersea and 2 km from Wandsworth, and we cover the whole SW10 postcode district and the roads in between.
Choices for your Chelsea project
- Opening vents with electric control
- Internal and external colours
- Aluminium or uPVC systems
- LED lighting in the plaster box
- Rectangular, square or bespoke sizes
- Classic look that suits period and modern homes
- Adds visual height to a single-storey room
Before you order: points to check
- Needs a strong, level kerb or upstand
- Some designs project above the roof enough to affect planning on certain houses
Do you need permission in Chelsea?
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
Read the planning permission guide before you commit to a design.
Roof lanterns prices in Chelsea
Prices below are shown including and excluding VAT. In Chelsea, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or bespoke aluminium lantern | £5,995 – £10,795 | £4,995 – £8,995 |
| Mid-size aluminium lantern (2 × 3 m) Typical | £3,955 – £5,995 | £3,295 – £4,995 |
| Small lantern (1 × 2 m) | £2,995 – £3,955 | £2,495 – £3,295 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Chelsea address.
- Measure and check. A surveyor visits Chelsea, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
More we do in Chelsea
Questions about roof lanterns in Chelsea
Roof lantern or flat rooflight?
A lantern adds height and sky from all sides; a flat rooflight is lower-profile and cleaner from outside. Our guide compares them in detail.
Can a lantern go on an existing extension?
Yes, if the flat roof structure can be opened up and trimmed. We check joists and the roof build-up at survey.
Do roof lanterns get hot?
They can in summer if clear glass is used on a south-facing roof. Solar-control glass and an opening vent make a big difference.
Can you work alongside my builder in Chelsea?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do I need to be at home for the survey in Chelsea?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
