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 Dumbarton?
In Dumbarton, an orangery typically costs £2,350–£3,300 per m² of floor area, including VAT at 20% (standard rate). For a typical 16 m² project that is roughly £37,500–£53,000. Prices in Scotland sit near the national average for this kind of work, and the range for Dumbarton reflects that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (11 m²) | £26,000–£36,500 |
| Typical project (16 m²) | £37,500–£53,000 |
| Larger project (22 m²) | £51,500–£72,500 |
| Rate per m² | £2,350–£3,300 |
The biggest cost drivers are:
- Amount and type of glazing
- Lantern size
- Frame material and colour
- Heating and flooring
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Do you need planning permission for an orangery in Dumbarton?
Approvals for an orangery in Dumbarton follow the rules for Scotland. In Scotland a single-storey extension is often permitted development (Class 1A): where any part is within 1 metre of a boundary, it can project up to 3 metres from the rear wall of a terraced house or 4 metres on other houses, with eaves no higher than 3 metres, an overall height of 4 metres and no more than half the front or rear garden covered. The rights do not apply in conservation areas or to flats, and a building warrant will usually still be needed before work starts.
In Scotland a building warrant is needed before work starts on most extensions, loft conversions and conversions. It is issued by the council’s building standards service. When the work is finished, a completion certificate is submitted and accepted by the council after inspection.
We check this for your address before design work starts, so there are no surprises later.
What we handle
What we take care of:
- Electrics, heating and plastering
- Roof lantern and glazed panels
- Insulated perimeter roof with internal pelmet
- Foundations and dwarf walls or piers
- French, sliding or bifold doors
- Building control sign-off where required
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 Dumbarton
In Scotland, bungalows and one-and-a-half-storey homes are common, so dormer conversions are a popular way to add bedrooms.
Projects in Dumbarton (G82) are surveyed in person before we quote, so the price reflects your actual property.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 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 handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about orangeries in Dumbarton
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.
How much does an orangery cost in Dumbarton?
In Dumbarton, an orangery typically costs £2,350–£3,300 per m² of floor area, including VAT at 20% (standard rate). A typical 16 m² project comes to roughly £37,500–£53,000. Your fixed price depends on the survey and drawings.
Do I need planning permission for an orangery in Dumbarton?
In Scotland a single-storey extension is often permitted development (Class 1A): where any part is within 1 metre of a boundary, it can project up to 3 metres from the rear wall of a terraced house or 4 metres on other houses, with eaves no higher than 3 metres, an overall height of 4 metres and no more than half the front or rear garden covered. The rights do not apply in conservation areas or to flats, and a building warrant will usually still be needed before work starts.
How long does it take?
Typically 8 to 12 weeks on site once approvals are in place.
Can an orangery replace a conservatory?
Yes. We can remove an old conservatory and build an orangery on new or upgraded foundations.
Do you build orangeries in Dumbarton?
Yes. We build orangeries across Dumbarton, including postcodes G82. Every project starts with a free home visit.