Conservation rooflights for Harrow: the essentials
We handle conservation rooflights across Greater London, including Harrow. In short: slim, low-profile steel-look rooflights for period and listed roofs. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
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. Typical uses for conservation rooflights include period, listed and conservation-area roofs.
We work across Greater London, including Harrow, and in neighbouring towns such as Wembley and Northolt. Access, parking and how the glass reaches the roof are all checked at the survey.
Options we can specify in Harrow
- Central vertical glazing bar
- Blinds
- Steel or aluminium frames
- Manual or electric opening
- Flashings for slate or plain tile
- Often preferred by conservation officers
- Traditional slim profile, sits low in the roof
Things we check at survey
- Lead or matching flashings may be required
- Projection above the roof line is limited — usually as flush as possible
Planning, building control and Harrow
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. 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.
Our planning guide covers each nation in more detail.
What do conservation rooflights cost in Harrow?
Prices below are shown including and excluding VAT. In Harrow, 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 |
From enquiry to finished job
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Harrow address.
- Measure and check. A surveyor visits Harrow, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
More we do in Harrow
Common questions
Do they suit slate roofs?
Yes — flashings are made for slates and for plain tiles.
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.
Can they open?
Yes, most are top-hung or side-hung for ventilation and cleaning, with manual or electric operation.
Do I need to be at home for the survey in Harrow?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Will I need planning permission in Harrow?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof.
