Orangery vs Conservatory: Which Extension Suits Your Home?

What actually separates the two

The words orangery and conservatory get used loosely, but they describe different structures. A conservatory is predominantly glass, usually with a fully glazed roof and slim frames, designed to feel like a garden room. An orangery is more of a hybrid: a brick-built extension with a larger area of solid wall, a flat or partially glazed roof, and a central roof lantern that brings light into the middle of the room rather than through the whole ceiling.

In practical terms, an orangery reads more like a permanent part of the house, while a conservatory reads as an addition to it. Neither is objectively better; the right choice depends on how the room will be used, how it sits against the existing house, and what you're prepared to spend.

Roof and pilaster differences

Conservatory roofs are typically glass or polycarbonate across the full span, sometimes upgraded to a solid tiled roof later. Orangery roofs are usually solid around the perimeter with a glazed lantern set into a flat or low-pitched section in the centre, often supported on box-section pilasters (wide vertical piers) rather than the slim glazing bars you'd see on a conservatory.

Those pilasters do more than look different. They house the structural posts and can conceal guttering, downlights and even blinds mechanisms, which gives an orangery a cleaner internal finish than a conservatory's exposed glazing bars.

Brickwork ratio and how it changes the feel

A conservatory might have brickwork only to cill height, with glazing making up the rest of the walls. An orangery typically has a much higher proportion of brick or render, sometimes with full-height glazed sections only on one or two elevations, which makes it feel warmer and more private.

This higher brickwork ratio is one reason orangeries suit period properties in Chester and older Wirral streets so well: the solid sections can be built to match existing brick or stonework, so the extension reads as part of the house rather than a glass box bolted onto it.

• Full brick to cill height, glass above: classic conservatory look
• Brick to near full height with a central lantern: classic orangery look
• Mixed approach with one glazed gable: a common middle ground

Planning and building regulations

Most single-storey conservatories and orangeries fall under permitted development, subject to size, height and position limits, and conservatories often benefit from a Building Regulations exemption because they're thermally separated from the house. Orangeries, with more solid roof and wall area, are more likely to be treated as a habitable extension and brought fully within Building Regulations, covering insulation, structural work and drainage.

In conservation areas, parts of Chester, and on listed buildings, permitted development rights can be restricted or removed, so it's worth checking before committing to a design. We can advise on likely planning routes as part of a survey, though the final decision always rests with the local planning authority.

Year-round usability

A traditional all-glass conservatory can be uncomfortable in high summer and cold snaps unless it has been upgraded with modern glazing, roof insulation and adequate ventilation. An orangery's higher proportion of insulated wall and roof generally makes it easier to keep at a comfortable temperature through the year, closer to how the rest of the house performs.

That said, a well-specified modern conservatory with a warm roof, high-performance glass and good ventilation can perform very differently from an older polycarbonate-roofed version, so it's worth comparing genuinely up-to-date options rather than assumptions based on older installations.

Cost ranges

As a broad guide, a mid-sized uPVC conservatory might range from roughly £9,000 to £20,000 depending on size, roof type and glazing specification, while an orangery of similar footprint typically runs from around £20,000 to £40,000 or more due to the additional brickwork, structural work and lantern roof. These figures are indicative only and depend heavily on groundworks, finishes and site access, so a written quote following a survey is the only reliable way to price a specific project.

Which suits which garden and house

A conservatory tends to suit smaller gardens or budgets, and homes where a light, garden-facing room is the priority. An orangery suits larger plots, period or detached properties, and households wanting a room that functions as genuine living space year-round rather than a fair-weather extra.

If you're unsure, it's worth walking the garden at different times of day to see how light falls, and thinking honestly about whether the new room will be used daily or occasionally, since that affects how much is worth spending on heating, insulation and roof specification.

Common questions

Is an orangery always more expensive than a conservatory?

Generally yes, because of the additional brickwork, structural steelwork and lantern roof, but a large, highly specified conservatory can sometimes cost more than a small, simple orangery.

Can I convert a conservatory into an orangery later?

Sometimes, particularly if the base and some walls are already in the right position, but it usually involves substantial rebuilding of walls and roof rather than a simple upgrade.

Do orangeries need planning permission in Chester's conservation areas?

It depends on the specific property and area; conservation area status can restrict permitted development, so we'd recommend a site-specific check before finalising a design.

Which is warmer, a well-built conservatory or an orangery?

An orangery is usually warmer as standard due to its higher proportion of insulated wall and roof, but a modern conservatory with a warm roof and upgraded glazing can close much of that gap.