A conservatory is still one of the most cost-effective ways to add bright, usable space to a UK home, but the choices behind that single word are wide. Style, frame material, roof type and glazing all change how the room looks, how much it costs and whether you can actually use it in January. This guide walks through the main conservatory styles, realistic 2026 prices, roof and material options, and the planning and building rules that decide what you can build.
Conservatory styles explained
Most UK conservatories fall into a handful of recognisable shapes. The right one depends on your budget, the size and orientation of your garden, and how the room will join the house.
Lean-to
A simple single-slope roof against the house, the lean-to is the most affordable and the easiest to fit under a low bungalow eaves or a flat above. It suits modern homes and tighter budgets and is quick to build.
Victorian
The classic faceted bay front with a steeply pitched roof and ornate ridge detail. A Victorian conservatory has three or five facets, giving a rounded, period feel that works well on traditional houses.
Edwardian
A square or rectangular footprint with a pitched roof, the Edwardian style trades the Victorian’s curves for usable corners, so you get more practical floor space for furniture from the same footprint.
Gable-front
Similar to an Edwardian but with a tall, upright front gable rather than a sloped roof at the front, creating a sense of height and light. It is a striking choice on larger homes.
P-shaped and other combinations
Larger builds often combine shapes, such as a lean-to joined to a Victorian section in a P, T or L plan. These suit bigger gardens and let you zone the room, for example a dining area and a sitting area.
Orangery
Strictly a halfway house between a conservatory and an extension, an orangery uses more brick, a flat perimeter roof with a glazed lantern, and feels more like a permanent room. It costs more but reads as part of the house.
How much does a conservatory cost?
As a broad guide for 2026, a fully fitted conservatory in the UK runs from around 8,000 pounds to 30,000 pounds or more, with a typical mid-range build near 15,000 pounds. The figure depends on size, style, frame material, roof and groundworks. Rough installed ranges look like this:
- Small uPVC lean-to (around 2.5m x 2.5m) with a polycarbonate roof: about 8,000 to 12,000 pounds.
- Mid-size Victorian or Edwardian (around 3m x 3m to 4m x 3m) with a glass roof: about 13,000 to 26,000 pounds.
- Larger orangery or a build with a solid tiled roof, underfloor heating and premium glazing: 30,000 pounds and upward.
A lean-to of a given size is usually 30 to 40 per cent cheaper than a Victorian or Edwardian of the same footprint because the roof is simpler. Groundworks, a difficult access or removing an old conservatory all add to the bill, so always get itemised quotes.
Conservatory roof options
The roof is the single biggest factor in whether a conservatory is comfortable all year. You have three broad choices.
Polycarbonate is the cheapest and lightest, but it is noisy in rain and poor at holding heat, so a polycarbonate room is typically a spring-to-autumn space. Glass with a modern self-cleaning, solar-control coating is the popular middle ground, letting in light while cutting glare and heat loss far better than polycarbonate. A solid or tiled roof turns the room into a year-round space with proper insulation, and replacing a tired glass or polycarbonate roof with a tiled one typically costs in the region of 6,000 to 15,000 pounds depending on size and shape. A tiled roof usually needs building control sign-off because it changes the structure and thermal performance, which the next section covers.
Frames and materials: uPVC, aluminium and timber
uPVC is the default for most conservatories: affordable, low maintenance and available in white, woodgrain and grey finishes. Aluminium is stronger and allows slimmer sightlines and bigger panes, so it suits contemporary, glass-heavy designs, at a higher price. Timber gives the most authentic period look and is sometimes required in conservation areas, but it costs more and needs regular upkeep. For most homeowners the decision comes down to how modern you want the look and how much maintenance you are willing to do.
Glazing matters as much as the frame. Modern conservatories use double-glazed units, and the better ones add a low-emissivity coating to keep warmth in during winter and a solar-control tint to cut glare and overheating in summer. Self-cleaning glass on the roof reduces how often you need to climb up and wash it. Paying a little more for the glass spec is usually money better spent than upgrading decorative trims, because it directly affects how comfortable the room feels day to day.
Do you need planning permission or building regs?
Many conservatories are built under permitted development and do not need planning permission, provided they stay within the size, height and boundary limits and the property has not had its rights removed. Conservation areas, listed buildings and homes where permitted development has been withdrawn are the common exceptions, so always check first. The official rules are set out on the Planning Portal conservatories page.
Conservatories are often exempt from building regulations when they are under 30 square metres, separated from the house by external-quality doors, and have an independent heating system. The moment you fit a solid roof, knock through to the house, or build an orangery, building regulations usually apply and you will need approval. For glazing standards and finding a competent installer, the Glass and Glazing Federation is a reliable reference.
How to choose the right conservatory
Start with how you will use the room and how often. If you want a true year-round space, budget for a glass or solid roof, good glazing and a heating plan from the outset, because retrofitting comfort is expensive. Match the style to the house and the garden, get three itemised quotes that separate the build from the groundworks, and check the installer’s accreditations and guarantees. For more home improvement guides and local advice, see the Contemporary Structures homepage.
Frequently asked questions
How much does a conservatory cost in 2026?
A fully installed conservatory typically costs between 8,000 and 30,000 pounds, with most mid-range builds around 15,000 pounds. Small uPVC lean-tos sit at the lower end, while orangeries and tiled-roof builds with premium glazing run higher.
Which conservatory style is cheapest?
A lean-to is usually the most affordable because its single-slope roof is simple to build. It is typically 30 to 40 per cent cheaper than a Victorian or Edwardian of the same size.
Can I use a conservatory all year round?
Yes, if it is specified for it. A glass roof with solar-control coating, good frames and a heating plan make a room usable across the year, and a solid or tiled roof makes it fully year-round. A basic polycarbonate roof tends to be too hot in summer and too cold in winter.
Do I need building regulations for a conservatory?
Often not, if it is under 30 square metres, separated from the house by external doors and heated independently. However, fitting a solid or tiled roof, removing the dividing doors, or building an orangery usually means building regulations approval is required.
Does a conservatory add value to a house?
A well-built, well-insulated conservatory that genuinely extends usable living space can add value, while a cheap, cold add-on can put buyers off. Quality of build, how it joins the house and year-round usability matter more than size.
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