Conservatory Costs & Prices in the UK: from Design to Fully Fitted for 2020

Because we all want the best at the right price!

Besides being a great way to add more usable space to your home, conservatories are fantastic home investments. But when it comes to conservatory prices, what exactly should you expect to pay?

There are wide range styles of available and the average cost of a conservatory can vary widely depending on where you are in the country, the type of conservatory you choose and who you contract to do the installation. Additionally you need to decide whether you want a hard wood install or a UPVC conservatory.

If th research has already started and you know the exact style of conservatory you’d like then here are some quick jumps to take you straight to the prices and review pages.



Fully fitted conservatory prices is really what you want to be shooting for as builders and companies are notorious for mentioning hidden costs further down the line.

In this prices guide, we’ll look at the different types of conservatories that are available and average cost of each style.

Rough Conservatory Costs

A written quote for the supply and full installation including any extras mentioned is what you want before you agree to anything. With conservatories prices including installation are usually standard but do your checks.

Though, you can expect to anywhere from £5,000 for a basic lean-to conservatory up to £15,000 for a deluxe Gable with a glass-panelled roof. Remember size will affect the cost massively so think long and hard about what you need versus what you would like.

Below, we’ll take a closer look at the design features and typical conservatory construction costs.

Style Size m2 Prices Fitted + Tiled Roof
Lean-To Conservatories 3 X 3 Prices From - £5000 - £7000 + 30 - 40%
Edwardian Conservatories 3.5 X 3.5 Prices From - £8000 - £9500 + 40 - 55%
Georgian Conservatories 3.5 X 3.5 Prices From - £8000 - £11500 + 35 - 42%
Victorian Conservatories 3 X 3 Prices From - £7500 - £10500 + 30 - 38%
P-Shaped Conservatories 5 X 3 Prices From - £12500 - £15000 + 28 - 32%
T-Shaped Conservatories 5 X 3 Prices From - £12500 - £14000 + 28 - 30%
Gable Conservatories 3.5 X 3.5 Prices From - £11500 - £13000 + 30 - 35%
Orangery Cost 4 X 4 Prices From - £20000 - £50000 N/A

So, How Much Does a Conservatory Cost?

How much is a conservatory is a pretty vague question, quotes vary widely depending on the size, colour, design, internal and exterior decor, number of doors and windows, power options and overall dimensions.

The most important considerations to consider when estimating the total cost of a conservatory, however, are building work requirements, planning permission requirements, and whether it will be subject to any building regulations.

The cost of a conservatory in 2020

In this section, we’ll take a more detailed look at how much do conservatories cost by design and style.

Lean-To Conservatory

Lean-to conservatories are the most common style in the UK. Featuring a basic, three-sided design and usually with a polycarbonate roof, they generally take less time to construct than other styles.

These are also what you would expect to see if you are wanting a budget conservatory or if you are searching for cheap conservatory prices.

Its simple design makes the lean-to easy to integrate with the existing decor of any home. However, please bear in mind the biggest complaint with this style is; due to the type of roof they get very hot in summer.

Edwardian Conservatory

The Edwardian conservatory is the second most common type in the UK and features a rectangular design which provides more floor space than its lean-to counterpart.

They are usually built with a small brick wall or dwarf wall as its often referred too and installed with a polycarbonate roof as standard. Personally, I would speak to your conservatory installer and see how much more a tiled roof would affect the final price

An optional glass roof makes the Edwardian a great choice when adding a sunroom to any home.

Georgian Conservatory

The Georgian conservatory is sometimes referred to as a reverse-drop or hipped-back Edwardian. Many people confuse Georgian conservatories with Edwardian, but there are a few key differences between the two.

One important distinction between them is that a Georgian generally has a larger footprint. This means you may need to obtain permission to have one of these designs constructed.

That being said the Georgian is one of the most straight-forward designs and suits the majority of homes especially if combined with existing Georgian architecture.

Conservatory Roof Prices

There are several factors which will affect the price of a conservatory roof, the main ones being the material you choose and obviously the size.

With that in mind the average conservatory roof replacement can cost anywhere between £2,500 to £8,000, with polycarbonate being the cheapest option

Glass is the most popular material used for conservatories and you have the option of choosing specialist glass, energy-efficient glass will cost more but reduce heating costs, so it is worth checking if there is a big difference in price.

P-Shaped Conservatories

A P-shaped conservatory combines the styles of a lean-to and a Victorian. It features an elongated room with a short, round addition, hence the name “P-shaped.” This type takes up a good deal of ground area, so it is generally only suited to larger detached properties. Because they feature dual entry points from the home, P-shaped designs are a great idea for anyone looking to add a multi-functional conservatory extension to their property (such as a seating area on one side and a children’s play area on the other).

Prices for P-shaped or Victorian conservatory prices usually start around £14,000 for a full build.

T Shaped Conservatory

Like P-shaped, T-shaped conservatories are great for those who want to add a multi functional living space to their property. The main difference between the two styles is shape and size; as its name suggests, the T-shaped resembles the letter “T” and are designed to run alongside a long wall. T-shaped prices vary depending on the choice of frontage (Gable end, Victorian end, etc.), but you can expect T shaped conservatory costs to start at around £14,000.

Gable Costs

The Gable is characterised by its vaulted glass-panelled roof, which allows for maximum sunlight and enhances the design’s bright, airy feel. These conservatories make great sunrooms, playrooms and pool enclosures. They are among the larger styles of that are available, typically measuring 3.5 x 4 metres. The Gable method is designed to suit larger properties, and this is reflected in its higher price tag; purchase and construction costs can range from £11,000 to £15,000 depending on the roofing material and structural variation.

It's not just the conservatory design and size that impacts the price

  • Does it need a concrete floor or not, if it does this will have to be quoted per square metre so the larger the area the more you can expect to pay.
  • Bifold doors Vs French doors? Bifold doors look much better but so they should at nearly twice the price.
  • National company or local firm seriously do yourself a favour and go with the local guy. Check the reputation and get a fair conservatory quote from an approved installer. No need to paying over the odds for some big national companies branding and overheads.
  • Central heating - How do you want to heat the space. All double glazing nowadays does a great job not losing heat but once you open those sliding doors or patio door the heat sharp disappears.

Building Work Requirements

Building work on conservatories, if it is required, affects the price considerably. Section 3 of the Building Act defines building work as ” work for or in connection with the construction, demolition or removal of a building.” If you’re rebuilding, replacing or upgrading an existing build you may need a building permit. Again this will increase the price.

Planning Permission Requirements

Whether or not your conservatory building will require permission from your local authority will depend on the size of the structure on a square metre basis. It shouldn’t require planning permission if it doesn’t stretch farther than 0.9 metres past the wall of your property and doesn’t rise above the tallest point of the property’s roof.

More on dwarf wall planning consent here.

How far can you push it?

Those with semi-detached or detached homes have a little more wiggle room with conservatories; it can stretch to a maximum of 70 cubic metres from the property or 15 percent of the property’s volume up to 115 cubic metres (whichever measurement is larger). Planning involves extra cost, so speak with a contractor about whether permission will be required or not.

Conservatory Planning Consent - All you need to know in 2020

Building Regulations

The UK Government has implemented building regulations to ensure that all new buildings meet minimum safety and security standards. In most cases, conservatories do not need to comply with building regulations, but there are a few circumstances in which the regulations must be met. If your conservatory will be built above ground level, for instance, or stands completely separately from the property, government building regulations will apply.

Heating the place

When heating conservatories you’ll also need to comply with building regulations if it will be independently heated. Before consulting with a company or builder, it’s a good idea to check with your local planning authority as to whether the structure will need to meet specific standards. For additional heating solutions in the winter for instance just use a heater.

It's difficult to get an exact conservatory cost calculator

What is a Conservatory?

The word conservatory or conservatories is a broad term encompassing any structure that has a glass roof and walls ( a dwarf wall in alot of cases) and is attached to a property on at least on side. There are commonly used as sunrooms, enclosed porches and pool enclosures.

What's the make up?

While there is no official legal definition specifying what makes a structure a conservatory, this type of structure typically comprises a minimum 50 percent sidewalls or dwarf walls and glass or uPVC roofing that is at least 75 percent transparent. Conservatories are often referred to as extensions, but it’s important to note that they aren’t truly extensions in the legal sense of the word.

The main distinction between the two types of structures is that extensions require permission from a local authority, where conservatories generally do not. Also prices for later will be way cheaper.

How is it different from an Orangery?

The terms “conservatory” and “orangery” are often used interchangeably, but the two structures are not the same. An orangery is a larger, more high-end addition to a property, but building one typically requires approval from a local authority where lots of conservatories are built without.

An example of an orangery is the lantern roof conservatory. As their name suggests, these orangeries feature cantilevered lantern-style roofs. The glass-panelled roof style allows for an abundance of natural light while also ensuring the utmost in privacy. As with conservatories or orangeries they vary in price depending on the design, construction materials, and interior and exterior finishes.

It will be set up you back more

Orangery prices are typically more expensive, however, with prices ranging from £10,000 to over £20,000.

Further Resources

We are adding to our conservatory guides all the time, below find 3 of the latest conservatory articles and remember simple conservatories regardless of size no longer have to be long forgotten storage rooms. 

Is a DIY Conservatory an option?

A quick word on DIY conservatories, they are a great option if you know what you’re doing, or you have a qualified conservatory installer on hand to help. The UPVC windows installation needs done by a pro or else you will be forever plagued by drafts. And roof obviously will be leaking if not done correct. Prices and costs will be lower with this option, yet so will the headaches.

The Bottom Line

As you can see from our price guide above, UPVC conservatory prices are dependent on a number of crucial factors – not the least of which are the conservatory style, the site conditions and whether planning or building permits are required.

This guide should help you understand the different options that are available and what kind of conservatory cost you will be looking at.

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