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Orangery Costs Explained: Our Comprehensive Guide


Unfortunately, the UK isn’t sunny enough to grow oranges. Despite that, orangeries are becoming ever more popular. Not only can they complement traditional houses, but they can also be designed with a modern twist. Also, the use of large expanses of glass means the rooms beneath are flooded with natural light. A beautifully designed orangery can transform any kitchen or living room into a space you’ll want to spend all your time in. But what does an orangery cost?

Table of Contents

1. What is an orangery?

Introduced into the UK from Italy in the 17th century, orangeries were built for the wealthy to house exotic plants such as citrus fruits. Us using them as living rooms or kitchens would have come as quite a shock!

More recently, the word orangery is used to describe a predominantly glazed extension. Orangery designs tend to have a shallow level of brickwork or stone matching the main house running around their perimeter. Natural light floods into the rooms within through the glazed roofs and large roof lanterns.

2. How much does an orangery cost?

Estimating how much an orangery might cost is a difficult task, as it depends on a number of different factors (which we will go into in more detail below). The most accurate way to estimate orangery costs is to first work out how big you would like your extension to be. Let’s say it would measure 4m x 5m (20m2 in total). The next step is to estimate the average construction cost per m2. In 2022 the average cost/m2 for an orangery is approx. £2,300/m2.

So…20m2 x £2,300 = £46,000.

That would be the average cost for both the materials and build cost.

To give you a better idea of the overall costs of different sizes of orangery, the table below should help.

Orangery SizeDimensionsFloor areaAverage cost (supply and build)
Small4m x 4m16m2£60,000
Medium6m x 6m36m2£75,000
Large7m x 7m49m2£85,000

3. ‘Hidden’ orangery costs

3.1. Size

If you’re like me, you would like to create as much new living space as possible. Remember, the overall size will be the biggest determining factor in the overall orangery cost. The bigger the structure, the more materials will be needed, and the more labour it will take to build.

When it comes to deciding on size, there are a few factors you should consider.

  • How much extra space do you need?
  • Do you need planning permission?
  • What is your budget?

3.2. uPVC or timber – orangery cost

When it comes to orangery materials, there are two main options:

uPVC: These orangeries are becoming increasingly popular. The main reason is orangery price, as uPVC is a cost-effective option. More recently, they are also becoming highly customisable. For those of you looking for that authentic timber orangery look, there are types of uPVC which have a wood grain finish (amazing!). No one will ever know the difference.

Timber: Orangeries made of timber encapsulate the timeless elegance of their original design. A wood finish gives them an authentic look and adds far more character to your house compared to uPVC alternatives.

3.3. Glass and more glass – orangery cost

There are also lots of different options when it comes to wall construction. Would you prefer full height or half height glass? The good news is there’s plenty of choice. Full height glazing, with bi-folding or sliding doors, is becoming increasingly sought-after. Remember though, that the more glass the higher the overall orangery cost.

Frameless glass orangery
Looking for something a little different? Why not go for a frameless glass orangery?

3.4. Pitched or flat roof

When it comes to orangery roofs there are three main options to choose from

  1. Pitched roof
  2. Flat roof with a rooflight
  3. Flat roof with a lantern

Pitched roofs tend to be slightly more expensive as they are more complex to build and require more materials. When it comes to roof lanterns and skylights there is little difference between the two. Usually, the larger you would like the roof opening to be the more that piece of glass will add to your orangery cost.

3.5. Architect or orangery company

When it comes to orangery design, there are two main options to consider:

Traditional architect: When choosing an architect, make sure they show you examples of orangeries they have successfully designed and built. It’s important because orangeries are unique and require a slightly different set of skills to designing a traditional extension.

Bespoke orangery companies: There are now lots of companies who specialise strictly in orangeries. They will have a team of experienced in-house designers who can show you lots of different options as well as examples of previous projects. The main advantage here is when it comes to construction. They will have a team of fitters who have built thousands of orangeries and will therefore be able to build them quickly and efficiently, to a very high standard – potentially having a pleasing impact on your overall orangery cost.

3.6. Planning permission

Application fees are also something to consider. Whether your new orangery falls with Permitted Development or Planning Permission, the application fees for these range from approx. £150 – £250. Your architect or orangery company will be able to advise you of the best planning route for your project.

3.7. Building regulations

Don’t forget Building Regulations fees. An orangery will be subject to the same building regulations as you would expect from an extension. The building control fee will usually include a plan checking service. This also covers regular site visits agreed between your builder and approved inspector as your project reaches specific milestones, so this won’t add to your orangery cost.

4. Orangery design options and their costs

4.1. Something more traditional

A traditional orangery is made of brick piers rather than insulted columns. This adds an authentic and traditional look to its exterior. When combined with a glass roof and decorative cornice, they will give you the classic orangery look you’ve always wanted.

Brick Orangery
This brick-built orangery will give your house that traditional feel

4.2. Modern twist

Modern orangery designs deliver style and performance in equal measure. They use super-insulated columns to create a stunning decorative effect. Large columns frame the edge of the structure, while smaller ones break up the areas in between.

Modern Orangery
For something more modern you can replace brick with sliding doors

4.3. Lantern orangery

These orangeries are characterised by large lanterns of skylights that sit on a flat or deck roof. These flood the space below with natural light. If you’re looking for something a little more classical, this is the perfect option.


An orangery can be the perfect addition to any house. Before committing, we would first advise speaking to an architect or bespoke orangery company about your design choices and orangery costs. Both architects and orangery companies have different benefits. When reviewing quotes, make sure they are all like for like. If you have any questions about a particular fee proposal, call the company and ask as many questions as you can about their fees and process.

If you’re dipping your toe in the orangery pool, why not arrange a free 30 min consultation with one of our friendly architects?

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