Loft conversion skylights for Balham: the essentials
For Balham homes and buildings we offer loft conversion skylights: roof windows planned for loft rooms — light, headroom and escape. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
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. In Balham, as anywhere, loft conversion skylights are the usual choice for loft conversions and rooms in the roof.
Balham sits about 2 km from Clapham and 2 km from Streatham, and we cover the whole SW12 postcode district and the roads in between.
What you can choose
- Blackout and thermal blinds
- Combination and stacked layouts
- Electric or solar opening
- Conservation styles
- Centre-pivot or top-hung
- Fits alongside dormers
- Electric opening for high windows
What to check first
- Front roof slopes can be restricted in conservation areas
- Insulation and vapour control details matter for condensation
Planning, building control and Balham
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. 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.
Read the planning permission guide before you commit to a design.
Loft conversion skylights prices in Balham
Prices below are shown including and excluding VAT. In Balham, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Electric top-hung escape window | £1,675 – £2,395 | £1,395 – £1,995 |
| Standard centre-pivot window Typical | £1,195 – £1,675 | £995 – £1,395 |
| Small window into open rafters | £955 – £1,315 | £795 – £1,095 |
How the job runs
- Tell us what you have. Send the SW12 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.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
More we do in Balham
Loft conversion skylights in Balham: questions
Can I add blinds later?
Yes — most manufacturers make blinds for each window size.
How many roof windows does a loft room need?
Enough to give good light — a common rule of thumb is glazing equal to roughly a tenth to a fifth of the floor area, adjusted for orientation and use. We advise at survey.
Do loft roof windows need to be escape windows?
Some loft rooms need an escape window, depending on the layout and the fire strategy for the conversion. Building control confirms the requirement.
Do I need to be at home for the survey in Balham?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Can you work alongside my builder in Balham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
