Conservation rooflights for Hampstead: the essentials
For Hampstead homes and buildings we offer conservation rooflights: slim, low-profile steel-look rooflights for period and listed roofs. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Think of conservation rooflights for slate and plain-tile roofs where a quiet roofline matters.
From Hampstead to Kilburn, Highgate and Cricklewood, the same survey-first process applies: measure, specify, fix the price, then fit.
What you can choose
- Flashings for slate or plain tile
- Toughened or laminated double glazing
- Central vertical glazing bar
- Steel or aluminium frames
- Manual or electric opening
- Traditional slim profile, sits low in the roof
- Optional central glazing bar
Things we check at survey
- Conservation officers may specify size and position
- Projection above the roof line is limited — usually as flush as possible
Consents for conservation rooflights in Hampstead
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. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Read the planning permission guide before you commit to a design.
What do conservation rooflights cost in Hampstead?
Prices below are shown including and excluding VAT. In Hampstead, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or electric conservation rooflight | £2,755 – £4,195 | £2,295 – £3,495 |
| Standard conservation rooflight Typical | £2,035 – £2,755 | £1,695 – £2,295 |
| Small conservation rooflight | £1,795 – £2,155 | £1,495 – £1,795 |
How the job runs
- Tell us what you have. Send the NW3 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
More we do in Hampstead
Questions about conservation rooflights in Hampstead
Do I need consent for a conservation rooflight?
On a listed building you need listed building consent. In a conservation area, check with the council — many areas have Article 4 directions affecting roof alterations.
Can you copy an original rooflight?
Some makers produce bespoke sizes to match an existing opening. We can survey and quote.
Will the council accept it?
We cannot promise an outcome, but a slim conservation profile fitted low in the roof is the type many conservation officers ask for.
Is the survey in Hampstead free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Can you work alongside my builder in Hampstead?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
