County Antrim
Roof lanterns and rooflights for rear extensions in County Antrim
Lanterns, flat rooflights and walk-on glass that bring light deep into the plan. We design and build rear extensions across County Antrim, from Belfast and Lisburn to Newtownabbey, covering single-storey kitchen extensions, two-storey additions, side returns and wraparounds.

Rear extensions in County Antrim gain most from a rooflight placed against the old back wall, where the room would otherwise be darkest. Semis and detached houses are typical of County Antrim, and many have room for a rear extension within Northern Ireland's permitted development limits.
What does it cost in County Antrim?
As a guide, £2,200–£4,500 including VAT. We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
What approvals does it need in County Antrim?
Insulation and glazing follow Technical Booklet F1 in Northern Ireland, checked by council building control.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland.
Where in County Antrim do we work?
FAQ
Questions people ask
Lantern or flat rooflight?
A lantern gives height and a feature; a flat rooflight is cleaner and lower-profile.
Can a rooflight open?
Yes, manually or electrically, with rain sensors.
Will it leak?
Not when fitted on a proper upstand with the membrane dressed up it.
Do you cover all of County Antrim?
We cover 7 towns and districts in County Antrim, including Belfast, Lisburn and Newtownabbey.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.