How Much Does an Orangery Cost in 2026? (UK)
A typical 4x4m orangery costs £20,000–£45,000 fully fitted in 2026. A modest uPVC-and-brick orangery starts around £20,000; a mid-range aluminium build with a glazed roof lantern sits at £28,000–£38,000; and a large hardwood orangery with bi-folds and underfloor heating runs past £45,000. That places it above a conservatory but below a full masonry extension. Here is the full 2026 cost breakdown by size and spec, why the roof lantern is the single biggest line, and when a brick extension is the better spend.
2026 orangery cost breakdown
| Size & spec | Fitted price (2026) | Notes |
|---|---|---|
| 3x3m uPVC orangery, brick base | £20,000–£26,000 | Entry level, glazed lantern |
| 4x4m aluminium, roof lantern | £28,000–£38,000 | Most popular size |
| 4x5m hardwood, bi-folds, UFH | £40,000–£55,000 | Premium, extension-grade finish |
| Roof lantern (supply only, per unit) | £2,500–£6,000 | Biggest single cost line |
| Comparison: 4x4m brick extension | £50,000–£70,000 | Full masonry, tiled roof |
What's included in a fitted orangery price
- Foundations, brick piers and dwarf wall
- Glazed or solid-perimeter roof with a central lantern
- Windows, doors (French or bi-fold) and internal pelmet
- Electrics, lighting and (on mid/high spec) underfloor heating
- Building Regulations sign-off and a structural guarantee
Why the roof lantern drives the price
The defining orangery feature — a flat perimeter roof with a raised glazed lantern — is also the most expensive component per square metre. A larger or double lantern, low-iron glass, or a powder-coated aluminium frame can add £2,000–£5,000 on its own. It is the first place to look when comparing two quotes that differ by several thousand pounds.
When a full extension is the smarter spend
If you want a true year-round room with the same thermal performance as the rest of the house, a full brick extension at £50,000–£70,000 may be better value per usable square metre than a top-spec orangery creeping toward £55,000. The orangery wins on speed, lighter foundations, and that distinctive light-filled character; the extension wins on insulation, resale and integration.
FAQs
Related guides
- Extension costs: timber frame vs brick
- Planning permission guides
- More cost guides
- Is it worth it? Insights
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