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 Caernarfon?
In Caernarfon, an orangery typically costs £2,200–£3,150 per m² of floor area, including VAT at 20% (standard rate). For a typical 16 m² project that is roughly £35,000–£50,500. We start from a UK-wide guide and adjust it for Wales, where labour and materials are typically about 8% below average. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (11 m²) | £24,000–£34,500 |
| Typical project (16 m²) | £35,000–£50,500 |
| Larger project (22 m²) | £48,500–£69,500 |
| Rate per m² | £2,200–£3,150 |
The biggest cost drivers are:
- Lantern size
- Amount and type of glazing
- Frame material and colour
- Heating and flooring
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 Caernarfon?
The approval route for Caernarfon is set by planning law in Wales. In Wales a single-storey rear extension is often permitted development: up to 4 metres beyond the rear wall and up to 4 metres high, with eaves no higher than 3 metres within 2 metres of a boundary and no more than half the land around the original house covered. Wales has no larger home extension prior approval route, so deeper extensions need a planning application, as do extensions to flats, listed buildings and houses whose rights have been removed.
Building regulations in Wales are set by the Welsh Government. Approval comes from the council’s building control service or a registered building control approver, with inspections during the work and a completion certificate at the end.
We check this for your address before design work starts, so there are no surprises later.
What we handle
The work we manage on an orangery:
- Foundations and dwarf walls or piers
- Flooring and decoration options
- Design to suit the style of the house
- Electrics, heating and plastering
- Building control sign-off where required
- French, sliding or bifold doors
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 Caernarfon
Wales has many terraced valley streets, stone cottages and post-war estates, so extension designs are shaped by slopes, materials and local character.
From LL55 outwards, we take on projects throughout Caernarfon and the surrounding parts of Gwynedd.
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
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about orangeries in Caernarfon
Do I need planning permission for an orangery in Caernarfon?
In Wales a single-storey rear extension is often permitted development: up to 4 metres beyond the rear wall and up to 4 metres high, with eaves no higher than 3 metres within 2 metres of a boundary and no more than half the land around the original house covered. Wales has no larger home extension prior approval route, so deeper extensions need a planning application, as do extensions to flats, listed buildings and houses whose rights have been removed.
How long does an orangery take in Caernarfon?
Typically 8 to 12 weeks on site. Design and approvals beforehand usually take 6 to 12 weeks.
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 much does an orangery cost in Caernarfon?
In Caernarfon, an orangery typically costs £2,200–£3,150 per m² of floor area, including VAT at 20% (standard rate). A typical 16 m² project comes to roughly £35,000–£50,500. Your fixed price depends on the survey and drawings.
Can it be used all year?
Yes. With an insulated roof, efficient glazing and heating, an orangery is comfortable all year.