How Much Is The Average Conservatory Cost?

The average conservatory cost starts from around £4,000 to £6,500 for a small room and can go up to £50,000 or more. This is a wide range as the final figure will be unique to you and depends on your property, as well as the specifications of your planned conservatory. If you are looking for an average cost of conservatories, there will be many different factors involved.

The main factor that will affect your conservatory cost is the style of the conservatory that you want. While other elements will have an impact, this is the primary financial factor.

For example, a small Lean-To conservatory could cost around £4,000, while the price can increase to £6,000 for a medium-sized installation.

There are many steps in the process of designing and installing a conservatory that will affect its cost.

The good news is, that’s why we’re here.

Here at Conservatory Online Prices, we have a comprehensive guide that will help you figure out your average conservatory cost.

average gable conservatories costs

What Factors Influence The Average Conservatory Cost?

One of the first things you would have thought about is the size of the conservatory you want. That’s a good start because the size is one of the main factors in the average conservatory cost.

A small fully-fitted Lean-To conservatory might cost you upwards of £4,000, while a medium-sized one would begin around £6,000. These are base costs for a uPVC conservatory with glass sides and a polycarbonate roof.

If you want the material to be anything other than uPVC, your average conservatory cost will change. The proportion of brick to glass also affects your average conservatory cost.

If you want dwarf walls or brick structures in your conservatory, the price of that would be extra. You will need to factor in that along with the average conservatory cost.

Even with the same set of materials, the profiles of the material can affect the average conservatory cost. The frames come in different widths and thicknesses and that does have a role to play in their cost.

Are you using a fully-glazed roof or a polycarbonate roof? A polycarbonate roof is not only lower in cost, but also cheaper.

conservatory roof costs

A very important factor that is easy to ignore is the foundation. You need a good foundation for the conservatory to last.

The foundation cannot be less than 1m but you also need to ensure that there are no drainage or sewage pipes, or power cables directly under where you need to dig.

Another potential expense that might add to your average conservatory cost but is often overlooked is building planning permission. You may need it if you live in an AONB or if construction in your property requires authorisation.

The time of the year, surprisingly, can affect the average conservatory cost. If you go shopping at an off-peak time, you may find deals and offers. The style of the conservatory also affects the average conservatory cost. In fact, after size, this is the biggest factor in the price.

What Are The Most Popular Conservatory Styles And Their Average Cost?

Conservatories have always been a popular home improvement in the UK, and like all trends, styles have come and gone. Some styles, however, have become classics and will always be in use. If you haven’t already decided what style you want, this might help you decide.

Conservatories are one of the most versatile home improvements you can choose. Whether you’re looking for a dining room, office space or living area, a conservatory is the perfect solution. Once you’ve decided how you want to use your new living space, it’s important to find the right conservatory style to meet your needs and the most competitive cost.

The style you choose will play a role in the average conservatory cost for you.

lean-to conservatory

What Is The Average Conservatory Cost For A Lean-To Conservatory?

A lean-to conservatory is the most popular style. It is a basic style that is versatile. Because of its uncomplicated features, this has the lowest average conservatory cost of all the styles.

It is characterised by a rectangular shape, with a lightly sloped roof. The conservatory itself has three sides, with the house acting as the fourth wall. This makes it appear as if it is ‘leaning’ on to the house, giving it its name.

The style is a great choice for houses where the height is restricted. It is also ideal for bungalows or terraced properties where the conservatory needs to fit in an awkward space.

You can choose to have a tiled roof, or a polycarbonate roof. The roof can also be partly glazed or fully glazed.

You can choose to have full-glass sides or walls, or dwarf walls where the glazing sits on a low brick wall. As we said, the lean-to conservatory is extremely versatile for the average conservatory cost you might invest in it.

The starting price of a lean-to conservatory, before it is fitted, can start as low as £2,500 for a small uPVC structure with 1 French door and 2 windows.

The average conservatory cost of fully built 3.5m x 2.0m uPVC conservatory with a polycarbonate roof and a dwarf wall would be about £7,000 t0 £8,000, while the same size with a glass roof would be about £7,500 to £8,500.

The average conservatory cost of a same sized fully glazed and built conservatory with a polycarbonate roof would be between £6000 to £7000, and £6,500 to £7,500 for a glass roof.

victorian conservatory costs

What Is The Average Conservatory Cost For A Victorian Conservatory?

A Victorian conservatory, as the name suggests, is influenced by the late Victorian architecture. Unlike the basic square or rectangular shape of a lean-to conservatory, this can have three or five facets.

A three faceted Victorian conservatory has a bay front with three main windows, while a five faceted one has five main windows.

This style of conservatory adds a stylish element to the architecture of your house. The shape of the conservatory allows as much light in as you want. The multifaceted windows create a cosy nook in your sunny room, making the average conservatory cost totally worth it.

The average conservatory cost for a Victorian style conservatory can get you a beautiful structure for your house. You can opt for a P-shaped design, or a vintage look with dwarf walls.

The Victorian conservatory can be given a modern look by using cleaner, more geometric lines and simpler frames. You can do away with the dwarf wall to make the sides completely glazed, letting in more light.

The average conservatory cost for a Victorian conservatory is not very high either.

The average conservatory cost for a Victorian conservatory of size 3.5m x 3.5m that is fully built with a dwarf wall would be between £11,000 to £12,000 with a polycarbonate roof. The same with a glass roof would cost you between £12,000 to £13,500.

The average conservatory cost for the same size but fully-glazed would be £9,500 to £11,000 with a polycarbonate roof, and between £10,500 and £11,000 for a glass roof.

Edwardian Conservatory

What Is The Average Conservatory Cost Of An Edwardian Conservatory?

The Edwardian style conservatory can prove to be a great investment. It combines the simplicity of a lean-to with the aesthetic appeal of a Victorian to give you great value for the average conservatory cost.

Another feature it offers is that its pitched roof, that is angled to drain off rainwater can be made as large as you like. It is not restricted, like the lean-to conservatory is, by the size of the conservatory.

The traditional Edwardian style conservatory is a rectangular structure that offers a generous amount of floor space. It has a dwarf brick wall that has the uPVC windows resting on it.

If you don’t want the classic look, you can do away with the dwarf brick wall. Not only will that bring down the average conservatory cost, you will also let in more light. However, the dwarf wall does help in keeping the windows away from the floor and preventing unsightly rain water splashes on the glass.

The Edwardian style conservatory is also quite versatile in design. It can be ‘wrapped’ around your house in an L shape to get two distinct areas.

You can have a gable fronted conservatory that will add a dramatic factor to your house when viewed from the garden. You will have an architectural talking point, bought with just the average conservatory cost.

And what is the average conservatory cost for an Edwardian conservatory?

A 3.0m x 3.0m uPVC conservatory with a dwarf wall and polycarbonate roof would cost you between £9,500 and 10,500, while the same with a glass roof would be between £9,500 to £11,000 fully fitted.

You can expect the average conservatory cost for a fully glazed conservatory of the same size to fall between £8,000 to £9,000 for a polycarbonate roof, and £8,500 and £9,500 for a glass roof.

gable conservatories

What Is The Average Conservatory Cost For A Gable Conservatory?

A Gable conservatory is characterised by the unmistakable shape of a gable roof. A gable conservatory adds a touch of grandeur to an otherwise regular house. With just this one structure, you can add a touch of Georgian architecture to your modern home.

You have the option of putting a polycarbonate roof for a more average conservatory cost, but this is not as energy efficient or noise-proof.

A glass roof might make your average conservatory cost go up a bit, but you will save in the long run on energy costs. You can even opt for a solid roof which is the best for insulation and energy savings. However, it does not let in as much light.

You can change the roof of any conservatory to a gable roof, and bring down the average conservatory cost to just the price and installation charges of the roof. To just replace the roof, you can expect to spend around £2,400 to £5,800, and it will take around two days to replace.

You must, however, get your conservatory foundation checked. It needs to be able to bear the weight of the new roof. Additionally, if your conservatory is old, the building regulations may have changed and your new roof might not have sufficient double glazing.

If you are planning to install a completely new conservatory, with a gable front, what is the average conservatory cost you might be expected to fork out?

A 3.5m x 3.5m uPVC conservatory with a dwarf wall and a polycarbonate roof will cost you between £11,500 and £13,000, fully built. The same with a glass roof will cost you around £12,000 to £14,000 fully built.

The same size, but with only refurbishment and no base work, will incur an average conservatory cost of £6,500 to £7,500 for a polycarbonate roof. For a glass roof, it can be between £7,500 and £8,500.


What Is The Average Conservatory Cost For Building An Orangery?

An orangery is a more high-end structure than a traditional conservatory. The main points of difference between the two are the walls and the roof style. Orangeries have a brick wall base, with a centralised lantern roof. As with any changes to the stylings of a conservatory, this will affect the cost.

It is more like a permanent house extension than an attachment, and the average cost for building it is naturally higher.

The average conservatory cost for building an orangery starts around £15,000, and may go up to over £50,000 if you want timber instead of uPVC.

Conservatory Bi-folding Door

What Other Features Can Add To The Average Conservatory Cost?

Your basic conservatory styles may be complemented with additional design features like coloured frames and door designs.

uPVC can be treated to give a wood effect, or a wood grain on white. You may also find uPVC in a variety of colours. However, these will add to the average conservatory cost that you end up paying. Wood effect especially is costlier than just coloured uPVC.

You can choose between door styles to enhance the look of your conservatory. The main styles to choose from are patio doors, French doors, and bi-folding doors.

You can stick to the tried and test French patio doors that open outwards. These are thermally efficient and maintain the security of your house.


You can install bi-folding doors that fold back from the centre into a neatly closed accordion. This gives you an open wall instead of just an open door. If you have space constraints, this might be the best solution for you.

This is also a great way to create a bigger room by just opening a door. You can partition off your L-shaped or P-shaped conservatory into two sections, which can be transformed into one large room by simply ‘folding back a wall’!

Getting Conservatory Costs

A conservatory is a great way to create more space and add up to 10% of the house’s value. To find out the average conservatory cost for your house, you can use our average conservatory cost calculator.

All you need to do is enter what you need and the size you are looking for. You can enter as many variations as you want, and it will generate a free quote for your every time.

Once you are done, you will receive an acknowledgement in an email, and we will call you to discuss your requirements. We can also recommend accredited conservatory installers that are local to you if you want.

Getting the average conservatory cost for your specific requirements is easy and free! Why not use our conservatory cost calculator and get your rates now?

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Frequently Asked Conservatory Questions

IThe majority of conservatories with a tiled conservatory roof will not require planning permission. This is because they are covered under what is known as a 'permitted development.'

However, Building Regulations will apply if you want to build an extension on your home.

Whether you are looking to invest in a brand-new conservatory, or just wanting to replace your existing conservatory roof, there are many conservatory roofing options available. The most popular conservatory roof materials are:
  • Solid Roofs
  • Glass
  • Polycarbonate

Solid Conservatory Roofs

If you are looking to achieve a more contemporary appearance, then a solid conservatory roof provides the perfect combination of conservatory and home extension. This conservatory roof option allows you to make use of the space you have, providing you with a living area you can use all year round.

Worried about light? Roof windows or glazed panels can be incorporated into the design, enhancing natural light for a light and airy feel. A lightweight tiled roof conservatory is also up to 15 times more thermally efficient than any other roof.

Polycarbonate Conservatory Roofs

Polycarbonate Roof Ideal for those on a tighter budget, a polycarbonate is often seen as a cost-effective option to roof glazing. They come in many different options such as different colours, shading and U-Values.

Typical colours include Bronze, Clear and Opal.

Glass Conservatory Roofs

Glass conservatory roofs are a popular choice because they provide great temperature control. They help to prevent your conservatory from being too hot in the Summer and too cold in the Winter.

It can also be specified with self-cleaning properties, helping to keep roof maintenance to a minimum.

In most instances the council tax will not increase on a property unless the additions another living quarter or self-contained annex. This means the addition of a conservatory should not increase the council tax payable on a property. To be absolutely certain you can always check the government's website which gives advice on council tax.
The main difference between a conservatory and an orangery is how the roof is constructed. A conservatory roof is over 75% glazed whereas an orangery roof has less than this amount. A conservatory also has over half of its wall space glazed whereas an orangery can include more brickwork than this.
Yes, you can put a conservatory on the front of your house. This is because conservatories come under the category of a permitted development. As such in most instances you do not need planning permission. This applies if the area surrounding the original house is not more than 50% covered by other buildings or additions.
A glass conservatory can cost as little as £4,000 depending on the style you choose and the amount of building work you need. Larger glass conservatories with more building work can cost £20,000 and above. If you know the conservatory style and size you need or just want an idea of cost our online conservatory cost calculator will give you a guide price.
A Loggia Conservatory can cost about £15,000 to £20,000 for an average size. The Loggia Conservatory is a popular style but can be more expensive than traditional conservatory styles.
A Loggia Conservatory can cost between 20% to 50% more than a uPVC conservatory. It is a good idea to shop around for quotes in order to get a competitive conservatory cost.
The average conservatory cost begins in the region of £4,000 to £5,000. This will be for a reasonably small and basic conservatory. The cost of a conservatory can be as much as £40,000 to £50,000. This will be a large conservatory, fully fitted with all building work included. As this is a wide spread it is a good idea to know your style and size in order to get an average conservatory cost.
The majority of conservatory roofs can be replaced within the course of a day however, this is dependent on design. A solid conservatory roof with added extras such as lighting, might take longer than a day.

Your chosen conservatory installer will protect any existing finishes during the project so no need to worry about your existing floor being damaged during transformation.

There are many ways of gaining temperature control. Conservatory blinds, ventilating windows, cooling film and air conditioning to name a few. You might also want to consider replacing your conservatory roof with a tiled or solid design.
There are many ways of keeping your conservatory warm in the Winter. If you have a small conservatory then an electric heater will suffice but those with bigger conservatories may want to look into installing underfloor heating.
Glazing is also very important in a conservatory. Most heat can be lost through glass so ensure your conservatory glazing is thermally efficient. You can also tackle draughts or cold spots by installing conservatory blinds.
This will largely depend on your location. You will find that certain areas have different setbacks based on the use of the building. We recommend that you check with your local council or take a look at the Goverment's Planning Portal.

You must notify your neighbour if you want to:

- Build on or at the boundary of your 2 properties - Work on an existing party wall or party structure - Dig below and near to the foundation level of their property
Replacing your conservatory roof can indeed make your conservatory warmer however, this will depend on the type of roof you choose. A solid or tiled conservatory roof will offer greater insulation than a plastic or glazed roof.
A solid roof can be put on a conservatory. There are many solid conservatory roof designs available - just ask your chosen installer for a recommendation. The majority of new-build conservatories with a solid, tiled or glazed roof will not require planning permission. They are covered under what is known as 'permitted development'. However, building regulations will apply if you want to build an extension.
When it comes to your home improvement, it's important to have all the necessary legal documentation. The installation of a conservatory, orangery or porch does not require a FENSA registration form.
The average life span of a uPVC conservatory is largely dependent on the quality of materials and build. Typically, a uPVC frame can last up to 25 years but some can last for decades ensuring they are well maintained.
Planning permissions used to say that a certain percentage of roofing must be translucent in order for a conservatory to be exempt from planning permission. Changes to building regulations however, now means that you may not require planning permission for roof replacement.
Swapping your existing conservarory roof for a tiled or solid roof replacement can be done without needing to file for planning permission. Planning permission may be required however, if the height of your extension is changed following completion.
A conservatory is defined as a 'building that has no less than 75% of its roof area made of translucent material and no less than 50% of its total wall area made of glass.
It is possible to convert a conservatory to an orangery but it isn't a simple process. A surveyor will need to come out and assess your property and conservatory to see if it is at first , feasible.
Both extensions and orangeries often require planning permission and in order to satisfy requirements, a new structure will have to be built.
If a conservatory is within two metres of a boundary, a conservatory should not be higher than three metres. It must also not extend beyond the rear wall of the original house by more than 3m if an attached house or by 4m if a detached house.
For construction work to begin a trench will need to be excavated to a minimum depth of 600mm. A conservatory needs footings just as much as any extension does.
Solid ground will need to found first and needs to be accepted by Building Control as being a minimum of 1 metre in standard conditions.
Foundations will need to be dug and because conservatories are lightweight in structure, their foundation loads are usually quite low. This can often lead to the notion that shallow foundations are satisfactory however, shallow foundations are more susceptible to subsidence.

Conservatories that are built with foundations shallower than the Building Regulations advise, are likely to encounter problems.

Building Regulations state:

A2. The building shall be constructed so that ground movement caused by :-
(a) swelling, shrinkage or freezing of the subsoil; or
(b) land-slip or subsidence (other than subsidence arising from shrinkage), in so far as the risk can be reasonably foreseen, will not impair the stability of any part of the building
Usually, there are no planning requirements when it comes to building a conservatory to a bungalow. However, the conservatory will be subject to certain conditions so be sure to check with your local building authority or with the Government's Planning Portal to ensure your conservatory remains within these guidelines.
Any structure that is built as an extra living quarter will require its own council tax band, even if it shares facilities with the main dwelling. If you're adding a conservatory then council tax won't be an issue however if you're adding a whole new annex, then your council tax is likely to change.
When is a conservatory not a conservatory? In order for a structure to remain a permitted development (a conservatory), the build needs to comply with a number of rules. A conservatory must be ground level, must not be more than 30m2, must be thermally separated from the original building, have its own heating and have glazing in critical zones that meet Part Nof the building regulations.
An extension refers to an additional structure that is anatomically in-keeping with your main property. An extension often requires planning permission unless it is classified as permitted development and is built with opaque cavity walls and brick-based foundations. Extensions are a big home improvement and investment, needing the work of an architect.
Conservatories or glazed extensions are perfect for those looking to add extra space on a budget. Typically, they are less of a logistical strain and in most cases do not require planning permission,
A conservatory can be built under permitted development rights, not needing an application for planning permission. A conservatory however is subject to the limits and conditions listed here. Building a conservatory onto an extension however, will be subject to different conditions. In some cases and under the permitted development regulations, you cannot attach an extension to an already extended part of a dwelling. It has to be attached to the original walls of the dwelling house.
A well built conservatory can increase your home's value by up to 7% . A conservatory can add lots of value to your home, increasing monetary value and making it much more attractive to a prospective buyer. A conservatory extension will change how you live and interact in your home for the better, enhancing space and comfort. It will certainly put your home above other properties too, especially when it comes to attracting a potential buyer. Read more here.
Conservatories are generally much cheaper than a single-storey extension of the same size. The price difference will largely depend on size and how complex the structure is to build, as well as the quality of materials.
The cost of a conservatory extension can range from £6,000 to £20,000. Compared to a full on extension, it is a much more affordable way of increasing space within your property. A full blown extension can cost up to £30,000. An extension is priced on average, per square metre.
A conservatory or single-story extension can be built without planning permission if: It's a maximum of 4 metres high or 3 metres high, within 2 metres of a boundary and the conservatory or extension does not cover more than half of the garden.
From now until 2019, you can extend outwards by up to 8 metres for detached homes and 6 metres for other property types. For this, instead of applying for planning permission you will need to undergo a Neighbour Consultation Scheme.
Fully fitted conservatory prices start from around £4,000 for a small room up to £20,000 + for bigger, more bespoke rooms. To get an idea on how much you can expect to pay for your new conservatory, you can use our conservatory cost calculator. It will provide you with a unique online guide price based purely on your own specifications. Fully fitted conservatory prices will vary from company to company and is also very much dependent on design.
In most circumstances, building regulations tend to apply when you build a new extension or a very large structure to your property. However, most of the time, conservatories are exempt from building regulations when they are erected at ground level and the floor surface areas is less than 30 square metres.
The average life expectancy of a conservatory depends on the quality of materials used as well as the installer. Generally speaking a conservatory built with uPVC window and door frames can last up to 25 - 30 years.
Conservatory extension costs are far more affordable than a full-blown extension. A conservatory costs anything starting from £3,000 - £4,000 deadening on final styles and specifications. On the other hand, full build house extensions can cost anything from £20,000 right up to £100,000+! Generally speaking extensions are priced on average, per square metre.
It is possible to build either a conservatory or a single-storey extension without gaining planning permission if: firstly, it has a maximum height of 4 metres or 3 metres high if situated within 2 metres of an existing boundary. The conservatory itself does not exceed over half the size of the garden.
The average cost to build a conservatory varies depending on many factors such as: size, style, materials, roof, number of windows and doors, building work requirements and internal works e.g. lightning, plastering, finishing etc. On average, costs for smaller type conservatories such as the lean-to conservatory style will start from around £3000 - £4000 including VAT and installation (subject to final requirements and technical survey).
Yes you can! Whatever the shape of your existing conservatory, you can be sure that there is a solid roof equivalent to meet your exacting requirements.
Changing roofs from a polycarbonate to a solid roof means that building regulations will apply. Your chosen installer will be able to answer any questions you have and help with any red tape such as contacting local authorities to resolve building regulations compliance.
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