What does skylight installation in Greenwich involve?
Our skylight installation service in Greenwich covers survey, supply and fit — new openings, extensions and fit-only work. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Skylight installation suits builders' projects and retrofits into finished roofs.
Neighbouring towns include Blackheath (2 km) and Lewisham (3 km). We offer a survey date when we reply to your enquiry.
Options we can specify in Greenwich
- Upstands and flashings
- New openings with joist trimming
- Internal plaster reveal
- Supply and fit
- Fit only (customer-supplied units)
- Free survey for new installations
- Fixed price in writing before work
What to check first
- Structural changes may need an engineer's check
- Building Regulations approval (a building warrant in Scotland) may be needed
Consents for skylight installation in Greenwich
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. 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.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. 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.
Our planning guide covers each nation in more detail.
What does skylight installation cost in Greenwich?
These are typical supply-and-fit ranges. For an address in Greenwich, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| New opening in an existing roof, supply and fit | £2,395 – £5,395 | £1,995 – £4,495 |
| Supply and fit into a new extension Typical | £1,435 – £3,595 | £1,195 – £2,995 |
| Fit only, customer-supplied unit | £595 – £1,195 | £495 – £995 |
What happens next
- Tell us what you have. Send the SE10 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Greenwich, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Skylight installation near Greenwich
More we do in Greenwich
Skylight installation in Greenwich: questions
Do you work with builders?
Yes — on new extensions we fit to the builder's programme once the upstand or roof is ready.
Do I need a structural engineer?
For new openings that cut joists or rafters, a structural check is sensible and building control may ask for calculations.
Is the survey free?
Yes, for new installations. Repair visits are charged.
How do I book a survey in Greenwich?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Can you work alongside my builder in Greenwich?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
