The conservatory cost most people quote, somewhere around 15,000 pounds, hides a huge range. A small lean-to fitted to an existing base can come in under 10,000 pounds, while a large orangery with a solid tiled roof can run past 40,000. What you actually pay depends on the style, the size, the roof, the groundworks and how much you spend making the room usable all year. This 2026 guide breaks down realistic UK conservatory cost by type, explains the extras that catch homeowners out, and shows where Kent prices tend to sit.
Treat every figure here as a planning guide rather than a quote. Prices vary by region, by installer and by how complex your site is, so always get at least three written quotes for your specific job.
What affects the cost of a conservatory
Before the style, several things move the price more than anything else:
- Size and footprint. Cost roughly tracks floor area, so a 3 by 3 metre room is far cheaper than a 4 by 5.
- Roof type. Polycarbonate is cheapest, glass sits in the middle and a solid, tiled roof is the most expensive, often adding several thousand pounds.
- Frame material. uPVC is the standard and the most affordable; aluminium and timber cost more.
- Groundworks. A new base, dwarf walls and drainage diversions add cost that a simple quote can hide.
- Glazing and finish. Energy-efficient glass, bi-fold or French doors and underfloor heating all push the figure up.
Conservatory cost by style
The style sets the baseline. These are typical fully fitted UK ranges for 2026, using uPVC frames and a standard glass roof unless stated:
- Lean-to conservatory: around 8,000 to 15,000 pounds. The simplest and cheapest shape, with a single-slope roof, ideal for bungalows and smaller homes.
- Victorian conservatory: around 12,000 to 18,000 pounds. A curved, bay-fronted footprint with an ornate roof, one of the most popular classic styles.
- Edwardian conservatory: around 12,000 to 18,000 pounds. A square or rectangular footprint that uses floor space more efficiently than a Victorian.
- Gable-fronted conservatory: around 15,000 to 22,000 pounds. A tall, full-height front gable that creates a grander, more open feel.
- P-shaped or T-shaped conservatory: around 18,000 to 30,000 pounds. Combined layouts that suit larger homes and bigger plots.
- Orangery: around 25,000 to 40,000 pounds and up. A brick-pillared, flat-roofed hybrid with a glazed lantern, closer to an extension in feel and price.
Choosing a solid tiled roof on any of these can add roughly 3,000 to 8,000 pounds but turns a seasonal space into a genuine year-round room.
Conservatory roof options and cost
The roof is the single biggest lever on both price and comfort. Polycarbonate is the cheapest and lets in light, but it is noisy in rain and poor at controlling temperature, which is why older conservatories are freezing in winter and stifling in summer. Glass roofs cost more but offer far better insulation, especially with modern self-cleaning, solar-control units. Solid tiled roofs are the most expensive option and the warmest, effectively making the conservatory perform like part of the house, although they reduce overhead light and may bring the project under building regulations. If you want to use the room every month of the year, the roof is where the budget is best spent.
The extra costs people forget
The headline price rarely covers everything. Budget for these on top:
- The base and groundworks: a new concrete base, footings and any drainage moves can add a few thousand pounds, more on a sloping or awkward site.
- Electrics: lighting, sockets and an outdoor-rated supply usually need a qualified electrician.
- Heating: an extra radiator, electric underfloor heating or an efficient electric panel, since most conservatories cannot simply take a radiator off the main central-heating system without controls that meet building regs.
- Flooring: tiles, engineered wood or luxury vinyl, plus any levelling.
- Blinds and finishing: blinds for a glass roof and the walls are a common and not insignificant final cost.
For a fuller picture of how these pieces fit together, see our conservatory guide, which covers styles and planning alongside cost.
Conservatory vs orangery vs extension on cost
If your budget is climbing toward the top of the conservatory range, it is worth comparing options. A conservatory is the most affordable way to add a light-filled room. An orangery costs more but feels more substantial and solid, sitting between a conservatory and a full extension. A traditional brick extension usually costs the most per square metre but adds the most usable space and tends to add the most value to the property. The right choice depends on how you will use the room and whether year-round comfort or maximum light matters more to you.
How to keep conservatory costs down
You can trim the bill without cutting corners. Stick to a standard size and a simple footprint rather than a bespoke shape. Choose uPVC over aluminium or timber. Reuse an existing, sound base if you have one. Get quotes in the quieter autumn and winter months when installers have more capacity. Above all, compare at least three detailed written quotes that itemise the base, roof, glazing, electrics and finishing, so you are comparing like with like rather than a low headline figure that grows once work starts.
Do you need planning permission for a conservatory?
Many conservatories fall under permitted development and do not need planning permission, provided they stay within set limits on size, height and how far they project from the original house. Those limits are tighter for terraced homes, listed buildings and properties in conservation areas. Building regulations can also apply, particularly with a solid tiled roof or where the conservatory is not separated from the house by external-quality doors. Always check with your local authority or the Planning Portal before you commit. In Kent, individual councils apply the national rules, so a quick call to your planning department is time well spent.
Frequently asked questions
How much does a conservatory cost in 2026?
For a typical uPVC conservatory with a glass roof, expect roughly 8,000 to 30,000 pounds fully fitted, depending on style and size. Most mid-range builds land around 12,000 to 18,000 pounds, while orangeries and large solid-roof builds cost more.
What is the cheapest type of conservatory?
A lean-to conservatory is the cheapest, usually around 8,000 to 15,000 pounds, because its single-slope roof and simple rectangular shape keep both materials and labour down.
Does a tiled conservatory roof cost much more?
Yes. A solid tiled roof typically adds around 3,000 to 8,000 pounds over a glass roof, but it dramatically improves insulation and makes the room comfortable to use all year, which many owners feel is worth the extra.
Is a conservatory cheaper than an extension?
Generally yes. A conservatory is usually the most affordable way to add a room, an orangery sits in the middle, and a full brick extension costs the most per square metre but adds the most usable space and value.
Will a conservatory add value to my home?
A well-built, well-insulated conservatory that can be used year-round can add value, but a cheap, cold polycarbonate-roofed addition may add little or even put buyers off. Quality, insulation and how well it suits the house matter more than the conservatory itself.
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