The short answer
An orangery typically costs £20,000–£40,000 in 2026, supplied and built. A compact orangery sits at the lower end, while a large kitchen-diner orangery with bi-fold doors, a big roof lantern and a high specification can reach or exceed the top of the range. Size, the amount of masonry, the glazing and lantern, foundations and internal finishes such as underfloor heating, plastering and flooring all move the price. These are typical illustrations, not quotes — see the cost per square metre and small orangery cost guides for a closer look.
An orangery is a building project, so the price covers more than glazing: foundations, masonry piers, a flat perimeter roof, the glazed lantern, windows and doors, and the internal finishing that turns the shell into a usable room. This guide sets out realistic 2026 ranges by size and specification, explains what is included, and flags the factors that push costs up. All figures are typical illustrations rather than quotes, and the glazing should be fitted by an orangery specialist who is FENSA or CERTASS registered.
Orangery costs at a glance
- Small orangery (around 9–12 m²) £18,000–£25,000
- Medium orangery (around 15–20 m²) £25,000–£35,000
- Large orangery (25 m²+) £35,000–£50,000+
- Typical overall range £20,000–£40,000
- Roof lantern (supplied & fitted) £2,000–£6,000
- Bi-fold or sliding doors uplift £2,000–£5,000+
What an orangery price includes
A typical orangery quote covers the foundations and damp-proofing, the brick or rendered piers and dwarf wall, the flat perimeter roof with its glazed lantern, the windows and glazed doors, and the basic internal finishing. The amount of masonry is one of the biggest cost drivers: more solid wall means more bricklaying and a longer build than a glass-heavy conservatory. The lantern is another — size, glazing specification and frame material all affect it. For a typical mid-sized orangery the whole job generally lands between £25,000 and £35,000, with smaller builds below and larger, higher-spec builds above. See the cost per square metre guide to sense-check a quote by footprint.
| Orangery size | Approx. footprint | Typical cost (supplied & built) |
|---|---|---|
| Small | 9–12 m² | £18,000–£25,000 |
| Medium | 15–20 m² | £25,000–£35,000 |
| Large | 25 m²+ | £35,000–£50,000+ |
What pushes orangery costs up
Several factors can take an orangery above the typical ranges:
- Size and footprint — more floor area means more foundations, masonry, roof and glazing. See the small orangery cost guide for the lower end.
- Glazing and lantern specification — a large lantern, bi-fold or sliding doors and high-performance glass all add cost.
- Internal finishes — underfloor heating, quality flooring, plastering, lighting and a kitchen fit-out can add several thousand pounds.
- Groundworks — poor ground, sloping sites, drainage diversions or deep foundations increase the build cost.
- Building control and planning — where building regulations or planning permission apply, allow for fees and design work.
Orangery vs conservatory and extension on cost
An orangery sits between a conservatory and a full extension on price. A conservatory of similar size typically costs less — roughly £8,000–£25,000 — because it has less masonry and a simpler roof, while a full single-storey extension commonly costs more for the equivalent footprint. That mid position is much of the orangery’s appeal: more permanent and better insulated than a conservatory, but usually quicker and cheaper than a full extension. See orangery vs conservatory, orangery vs extension and is an orangery cheaper than an extension.
Finance, regulations and certificates
Some specialists offer finance to spread the cost. On compliance, the glazing is notifiable work that a FENSA or CERTASS registered installer can self-certify, issuing a certificate you will need when you sell; the structure is covered by building regulations and your local Building Control where they apply, depending on the orangery’s glazing ratio and whether it is separated from the house by external-quality doors. This is general information; costs vary with your specific home, design and the quotes you receive, and the glazing should be fitted by a FENSA or CERTASS registered installer.
Compare orangery quotes
Prices vary significantly between specialists for a similar orangery and job. Use our service to compare quotes from orangery specialists in your area.
Frequently asked questions
How much does a typical orangery cost in 2026?
A typical orangery costs £20,000–£40,000 supplied and built, with a small build around £18,000–£25,000 and a large, high-specification orangery reaching £50,000 or more. These are typical illustrations, not quotes — get at least three itemised estimates for your property.
Why does an orangery cost more than a conservatory?
An orangery has more masonry, a built flat roof with a glazed lantern, and more internal finishing than a glass-heavy conservatory, so it takes longer and involves more trades. That is also why it feels more like a permanent room. See orangery vs conservatory.
What is the cheapest way to build an orangery?
Keeping the footprint compact, choosing a standard design and lantern, and limiting high-cost internal finishes such as underfloor heating and a full kitchen fit-out all keep the price down. See the small orangery cost guide. Always compare like-for-like quotes rather than choosing on headline price alone.
Does an orangery add value to a house?
A well-built orangery can support a home’s value and saleability, particularly as a bright, usable kitchen-diner or family room, but the effect varies by property and area and is rarely a direct pound-for-pound return. See does an orangery add value.
Sources & further reading
- Glass and Glazing Federation (GGF) — consumer guidance on orangery costs and specifications
- FENSA / CERTASS — registered installer schemes and Building Regulations compliance for glazing
- Planning Portal — orangeries, conservatories and permitted development
- GOV.UK / Building Regulations Approved Documents — standards for extensions and glazed structures
- RICS — home improvements and their effect on property value
This is general information, not advice for your specific property or build. Costs, timescales and outcomes vary with your home, the design you choose and your chosen specialist. The glazing should be fitted by a FENSA or CERTASS registered installer. We are an independent information and introduction service, not an installer.