Answer 4 quick questions for an instant 2026 UK conservatory estimate. Choose style, size, roof and region — realistic low/typical/high figures from real pricing across 519 UK towns. No email required.
Costs include supply, labour and VAT. A real quote follows a site survey.
Typical Conservatory Costs by Style (2026)
Indicative supply & fit base prices, medium size, Midlands baseline (glazing/roof upgrades add more).
Style
Typical spec
Cost
Lean-to
Small/medium, polycarbonate or glass roof
~£13,000
Edwardian
Medium, glass roof
~£18,000
Victorian
Medium, bay-fronted
~£19,000
Garden room
Insulated, solid roof
~£25,000
Orangery
Brick piers + lantern roof
~£30,000
These figures power the calculator above — enter your own spec for a tailored estimate. For the full breakdown, read our complete cost guide.
Conservatory Cost by Size (2026)
Supply & fit, double glazing, UK-average region. Range spans lean-to at the low end to orangery at the high end — pick your exact style, roof and region in the calculator above for a tighter figure.
Size
Typical footprint
Area
Cost fitted
Small
3m × 3m, 4m × 3m
up to 12m²
£9,150–£28,300
Medium
5m × 3m, 4m × 4m, 5m × 4m
12–20m²
£11,450–£35,400
Large
6m × 4m and above
20m²+
£16,600–£51,350
Frequently Asked Questions
How much does a conservatory cost in the UK in 2026?
A typical UK conservatory costs £12,000–£40,000 in 2026 depending on style, size and glazing. A small lean-to with polycarbonate roof starts around £10,000. A large orangery with solid tiled roof and bifold doors can reach £60,000+. Most homeowners spend £15,000–£25,000 for a medium Edwardian or Victorian style.
Do I need planning permission for a conservatory?
Most conservatories fall under Permitted Development and don't need planning permission, provided they meet size limits (no more than 50% of the original house garden, max 4m high, not forward of the principal elevation). Listed buildings and conservation areas always need full planning permission.
What is the difference between a conservatory and an orangery?
A conservatory is predominantly glazed (walls and roof). An orangery has substantial brick or masonry pillars with a solid perimeter and a glazed or lantern roof section in the centre. Orangeries are warmer, more private and closer to a full extension in construction terms — and cost more.
How long does a conservatory take to build?
A medium conservatory typically takes 6–10 weeks from ground-breaking to completion: 1–2 weeks for foundations, 1 week for brickwork base, 2–4 weeks for the frame and glazing, and 1 week for finishing. A garden room or orangery can take 12–20 weeks.
Is a conservatory worth it in 2026?
A well-built conservatory with a solid or glass roof adds 5–10% to property value according to estate agents. Polycarbonate-roofed conservatories are less valued by buyers. An insulated garden room (with solid roof, underfloor heating and good glazing) is increasingly preferred and often commands a premium.
How accurate is this conservatory cost estimate?
It gives a guide based on average UK 2026 prices for the style and size you choose, not a firm quote. Your real cost depends on the base and groundworks, frame material, glazing spec, roof type and how your ground and drainage behave on site. Use the estimate to set a budget, then get a surveyed quote to confirm.
What does the conservatory estimate include and exclude?
The figure usually covers the base, frame, glazing, a standard roof, fitting and 20% VAT. It often excludes tricky groundworks, moving drains or manholes, electrics, heating, flooring, blinds and any dwarf-wall brickwork upgrades. Sloping or soft ground and difficult access can add significantly, so treat those as extras on top of the guide price.
Why would a real conservatory quote differ from the calculator?
A calculator uses averages, but an installer prices your actual plot, including access for materials, ground conditions, drain positions and any building-control needs. Region matters too, with London and the South East typically dearer on labour. Premium glass, solid or tiled roofs and bespoke shapes also move a genuine quote above the average estimate shown.
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