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 Southsea?
In Southsea, an orangery typically costs £2,700–£3,800 per m² of floor area, including VAT at 20% (standard rate). For a typical 16 m² project that is roughly £43,000–£61,000. That range is adjusted for the South East, where domestic building work typically costs around 12% above the national average. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (11 m²) | £29,500–£42,000 |
| Typical project (16 m²) | £43,000–£61,000 |
| Larger project (22 m²) | £59,500–£83,500 |
| Rate per m² | £2,700–£3,800 |
The biggest cost drivers are:
- Opening into the house
- Frame material and colour
- Size and shape of the footprint
- Lantern size
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 Southsea?
The approval route for Southsea is set by planning law 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
The work we manage on an orangery:
- Electrics, heating and plastering
- French, sliding or bifold doors
- Insulated perimeter roof with internal pelmet
- Flooring and decoration options
- Building control sign-off where required
- Design to suit the style of the house
How long does it take?
Allow 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 Southsea
The South East has a broad mix of housing, from Victorian terraces in the towns to post-war semis and newer estates, so extension types vary street by street.
From PO4 outwards, we take on projects throughout Southsea and the surrounding parts of Hampshire.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about orangeries in Southsea
Can it be used all year?
Yes. With an insulated roof, efficient glazing and heating, an orangery is comfortable all year.
Does an orangery need planning permission?
The same rules as a single-storey extension apply. Many are permitted development, depending on depth, height and your house’s location.
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 Southsea?
In Southsea, an orangery typically costs £2,700–£3,800 per m² of floor area, including VAT at 20% (standard rate). A typical 16 m² project comes to roughly £43,000–£61,000. Your fixed price depends on the survey and drawings.
How long does an orangery take in Southsea?
Typically 8 to 12 weeks on site. Design and approvals beforehand usually take 6 to 12 weeks.