What is an orangery?
An orangery is an extension with brick or block piers, large areas of glazing and a solid perimeter roof around a central roof lantern. It sits between a conservatory and a traditional extension: brighter than an extension, warmer and more private than a conservatory.
How much does an orangery cost in Carrickfergus?
In Carrickfergus, an orangery typically costs £2,050–£2,900 per m² of floor area, including VAT at 20% (standard rate). For a typical 16 m² project that is roughly £33,000–£46,500. The guide for Carrickfergus reflects typical costs in Northern Ireland, roughly 14% below the UK-wide figure. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (11 m²) | £22,500–£32,000 |
| Typical project (16 m²) | £33,000–£46,500 |
| Larger project (22 m²) | £45,000–£64,000 |
| Rate per m² | £2,050–£2,900 |
What moves the price most:
- Lantern size
- Amount and type of glazing
- Size and shape of the footprint
- Heating and flooring
Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.
Do you need planning permission for an orangery in Carrickfergus?
Here is how the rules work for an orangery in Northern Ireland. In Northern Ireland the Planning (General Permitted Development) Order (Northern Ireland) 2015 allows single-storey rear extensions of up to 3 metres on attached houses and 4 metres on detached houses, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary. Houses with removed rights need planning permission, listed buildings need consent, and in conservation areas extensions must stay single-storey and must not come forward of the front or side walls.
In Northern Ireland building control approval comes from the council, usually through a full plans application or a building notice, with inspections during the work and a completion certificate at the end.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
From survey to sign-off, the job normally involves:
- Electrics, heating and plastering
- French, sliding or bifold doors
- Insulated perimeter roof with internal pelmet
- Design to suit the style of the house
- Foundations and dwarf walls or piers
- Building control sign-off where required
How long does it take?
The build itself usually takes 8 to 12 weeks on site. Design and approvals come first and typically take 6 to 12 weeks, depending on the approval route.
Building in Carrickfergus
Northern Ireland has many detached and semi-detached homes on generous plots, which suits single-storey rear extensions and garage conversions.
If your home is in Carrickfergus or close by in Newtownabbey, Bangor and Larne, a free home visit is the first step.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about orangeries in Carrickfergus
Can an orangery replace a conservatory?
Yes. We can remove an old conservatory and build an orangery on new or upgraded foundations.
Do I need planning permission for an orangery in Carrickfergus?
In Northern Ireland the Planning (General Permitted Development) Order (Northern Ireland) 2015 allows single-storey rear extensions of up to 3 metres on attached houses and 4 metres on detached houses, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary. Houses with removed rights need planning permission, listed buildings need consent, and in conservation areas extensions must stay single-storey and must not come forward of the front or side walls.
Do you build orangeries in Carrickfergus?
Yes. We build orangeries across Carrickfergus, including postcodes BT38. Every project starts with a free home visit.
How much does an orangery cost in Carrickfergus?
In Carrickfergus, an orangery typically costs £2,050–£2,900 per m² of floor area, including VAT at 20% (standard rate). A typical 16 m² project comes to roughly £33,000–£46,500. Your fixed price depends on the survey and drawings.
Does an orangery need building regulations approval?
If it is open to the house or does not meet the conservatory exemption, yes. Most orangeries are treated as extensions and need building control approval, which we arrange.
How long does it take?
Typically 8 to 12 weeks on site once approvals are in place.