Larne, County Antrim
Glazed rear extension in Larne
We plan and build glazed and glass-box rear extensions for homeowners in Larne. Full-height glass, slim frames and big rooflights for the most open rear room. Start with a free site visit, then a written price once the design is agreed.
Larne is covered from our County Antrim round, including BT40. If your garden in Larne faces south, expect us to talk about overhangs and solar-control glass before frame colours.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a glazed rear extension cost in Larne?
A glazed rear extension in Larne is priced at £2,440–£4,180 per square metre including VAT as a guide, before kitchen fit-out and fees. Northern Ireland prices are the lowest in our range.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £29,000–£50,000 |
| 4 m wide × 6 m deep (24 m²) | £58,500–£100,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a glazed rear extension in Larne?
Planning for a glazed rear extension in Larne follows the Northern Irish householder rules.
In Northern Ireland the Planning (General Permitted Development) Order (Northern Ireland) 2015 allows a single-storey rear extension of up to 3 metres on an attached house or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary. Building control approval from the council is still required.
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. At the first visit we measure what is there now and tell you which route fits: permitted development or a planning application.
What are homes in Larne like to extend?
Semis and detached houses are typical of Larne, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a glazed rear extension in Larne comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning or permitted development, building control approval, structural design and neighbour agreements are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Glazed rear extensions near Larne
Neighbouring places we cover include Carrickfergus (9.3 miles) and Newtownabbey (13.6 miles).
- Glazed rear extension in Carrickfergus
- Glazed rear extension in Newtownabbey
- Glazed rear extension in Bangor
- Glazed rear extension in Holywood
- Glazed rear extension in Dundonald
Other work in Larne:
FAQ
Glazed rear extension questions in Larne
Do you handle building control in Larne?
Yes. We apply to the council's building control team and hand over the completion certificate.
How much does a glazed rear extension cost in Larne?
As a guide, £2,440–£4,180 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £29,000–£50,000 at that rate. Your written price follows the survey.
Sliding or bifold doors?
Sliders give bigger panes and slimmer sightlines; bifolds open the whole width. Our guide compares them.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Is the site visit in Larne free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do I need a party wall agreement?
Northern Ireland has no Party Wall Act; we agree any shared-wall work with your neighbour in writing.