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 Bangor, County Down?
In Bangor, 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. Prices across Northern Ireland are typically 14% below the UK average for this kind of work, which is reflected in the range for Bangor. 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 |
The biggest cost drivers are:
- Lantern size
- Frame material and colour
- Opening into the house
- Size and shape of the footprint
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Do you need planning permission for an orangery in Bangor, County Down?
Approvals for an orangery in Bangor follow the rules for 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
On a typical orangery we handle:
- Electrics, heating and plastering
- Foundations and dwarf walls or piers
- Insulated perimeter roof with internal pelmet
- Design to suit the style of the house
- Building control sign-off where required
- Flooring and decoration options
How long does it take?
The build itself usually takes 8 to 12 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Bangor, County Down
Northern Ireland has many detached and semi-detached homes on generous plots, which suits single-storey rear extensions and garage conversions.
Our Bangor coverage includes postcode districts BT19 and BT20, and we also work in nearby places such as Newtownards, Carrickfergus and Newtownabbey.
How it works
- 01
Free visit
We look at the property, talk through what you want and measure up. There is no charge and no obligation.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about orangeries in Bangor, County Down
Can an orangery replace a conservatory?
Yes. We can remove an old conservatory and build an orangery on new or upgraded foundations.
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 an orangery take in Bangor?
Typically 8 to 12 weeks on site. Design and approvals beforehand usually take 6 to 12 weeks.
How much does an orangery cost in Bangor?
In Bangor, 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.
Do I need planning permission for an orangery in Bangor?
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.
What is the difference between an orangery and a conservatory?
An orangery has a solid roof around a central lantern and more brickwork, while a conservatory is mostly glazed. Orangeries are usually warmer in winter and cooler in summer.
