Skylight installation for Barnet: the essentials
Thinking about skylight installation in Barnet? The short answer: survey, supply and fit — new openings, extensions and fit-only work. The longer answer depends on your roof, which is why we survey before we price.
Party walls are a fact of life in London terraces, and rooflights close to a shared wall need detailing that keeps the neighbour's side dry too. Skylight installation suits builders' projects and retrofits into finished roofs.
Neighbouring towns include Potters Bar (5 km) and Borehamwood (5 km). We offer a survey date when we reply to your enquiry.
What you can choose
- Upstands and flashings
- Fit only (customer-supplied units)
- New openings with joist trimming
- Supply and fit
- Electrics coordination
- Free survey for new installations
- Making good inside included
What to check first
- Building Regulations approval (a building warrant in Scotland) may be needed
- Structural changes may need an engineer's check
Do you need permission in Barnet?
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.
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. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Read the planning permission guide before you commit to a design.
Skylight installation prices in Barnet
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Barnet address.
- Measure and check. A surveyor visits Barnet, 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.
Nearby towns
Other services in Barnet
Common questions
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.
Who handles building control?
We tell you which route applies — building control approval, a building warrant in Scotland, or in England and Wales self-certification by a registered competent person — and supply the product data.
Do you work with builders?
Yes — on new extensions we fit to the builder's programme once the upstand or roof is ready.
Can you work alongside my builder in Barnet?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
How do I book a survey in Barnet?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
