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 Mendip?
In Mendip, an orangery typically costs £2,450–£3,450 per m² of floor area, including VAT at 20% (standard rate). For a typical 16 m² project that is roughly £39,000–£55,000. Prices in the South West sit near the national average for this kind of work, and the range for Mendip reflects that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (11 m²) | £27,000–£38,000 |
| Typical project (16 m²) | £39,000–£55,000 |
| Larger project (22 m²) | £54,000–£76,000 |
| Rate per m² | £2,450–£3,450 |
What moves the price most:
- Size and shape of the footprint
- Amount and type of glazing
- Frame material and colour
- Heating and flooring
For a figure based on your own measurements, try the guide price tool, then book a free home visit for a fixed quote.
Do you need planning permission for an orangery in Mendip?
Before anything is built in Mendip, we confirm which approvals apply in England. In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Where work involves a shared wall, building on the boundary, or digging foundations within 3 metres of a neighbour’s building and deeper than its foundations (or within 6 metres for deeper work), the Party Wall etc. Act 1996 applies and notices must be served before work starts.
We check this for your address before design work starts, so there are no surprises later.
What we handle
Handled as part of most orangeries:
- Building control sign-off where required
- Electrics, heating and plastering
- Insulated perimeter roof with internal pelmet
- French, sliding or bifold doors
- Foundations and dwarf walls or piers
- Flooring and decoration options
How long does it take?
Expect 8 to 12 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Mendip
In parts of the South West, protected landscapes and conservation areas shape what can be built, so materials and roof forms are chosen carefully.
We work across Mendip and neighbouring areas such as Frome, Keynsham and Nailsea. Postcodes we cover in Mendip include BA5.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 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
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about orangeries in Mendip
Do you build orangeries in Mendip?
Yes. We build orangeries across Mendip, including postcodes BA5. Every project starts with a free home visit.
How much does an orangery cost in Mendip?
In Mendip, an orangery typically costs £2,450–£3,450 per m² of floor area, including VAT at 20% (standard rate). A typical 16 m² project comes to roughly £39,000–£55,000. Your fixed price depends on the survey and drawings.
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.
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.