How Much Does A Conservatory Cost in 2021?

grey conservatory

Complete Guide for Conservatory Prices

If you’re thinking about adding a conservatory, this article is for you. I’m going to go through all the different types you can have, also the cost. The cost will depend a lot on the size, but different styles have different costs. If you want to just jump to the prices, there is a calculator below where you can just pick the style and SQM you want and it will give you a rough price.

The final price may differ from the calculator based off a few things, do you have something there already? Does it need to be knocked down? Do you already have foundations etc?

This guide has been written to help you make an informed decision as to whether you want to go ahead, but also arm you with the knowledge you need to know when dealing with contractors. The more you know, the easier it will be to speak their language and get the best deal possible.

Conservatory Cost Calculator



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Other than contractor fees, materials are quite expensive, so if you want to keep the cost low, choosing more affordable option is best. While a conservatory is quite small, the roof can take up a considerable chunk of the budget, depending on the choices that you make. One of the most affordable roofing options is using polycarbonate. 

Tip: Do not go for the plaster roof, it won’t last as long and it’s worth saving more to get a much better conservatory.

Prefabricated base

A dug up steel base is a standard option since it gives a sense of security and longevity. However, if you are on a strict budget, you should consider a prefabricated base since it is cheaper to get and doesn’t involve as much work. The most important thing is to make sure that the foundation is well set.

Construct during off-peak season

But you can usually get a better deal by going off-peak. Builders tend to be less busy and with no rush on your end, being flexible might just get you a better deal.

Compare quotes

You should ALWAYS get multiple quotes, even if it’s a family friend doing the work. Chances are a family friend would be cheaper, but at least you know how big a Christmas present you need to get them based off how much they save you!

Avoid planning permission

You must keep the construction of the Conservatory within the recommended size to avoid having to get permission for it. As a rule, it shouldn’t go higher than the roof of your house and shouldn’t be visible from a public road. You can also seek advice from your contractor on the requirements.

Avoid custom fittings

Whether it is doors or windows, it will cost you a lot more if you need it bespoke. To save on costs, always opt for the standard sizes offered and look for exciting designs from what is available. There are so many options from which to choose, so do your research, and you should find something that fits your style.

Editors Note: You should always be getting multiple quotes for ANY job you get done on your home.

What is the average cost of a conservatory?

It is challenging to come up with an exact figure of how much you should expect to spend on constructing your Conservatory.

This is because not all of you will have the same starting point, some of you will already have a conservatory and will just want to redo it, which means (unless you want to change the size) the foundations are still there. Some will be in central London, others in Cornwall. So keep this in mind when looking at the prices estimated in this article.

However, you can get a sample quote for a small conservatory to guide you on what to expect. The following are some average costs of constructing a structure of this size. Note the material used is UPVC since it is the most affordable material, so these prices are on the lower side.


Style Cost
Victorian £7,000-£11,000
Lean-to £5,700-£7,700
Edwardian £9,000-£11,000
L-Shaped £11,000-£13,000
P-Shaped £8,300-£10,000
T-Shaped £11,000-£15,000
Orangery £15,500-£20,000

Choosing the style of your Conservatory and how much it will cost

One of the first things to have in mind when you are planning the construction of your Conservatory is the style. A common conservatory that most people go for is as an extension to the kitchen. You can, however, make it into whatever you like, but remember how much work will go into making way for it will highly influence the cost.

There are different styles from which to choose, but these alone don’t determine the price of the Conservatory. The following are the most common styles from which to choose.

Victorian Conservatory Cost 

If your home has an older style, then a Victorian conservatory may just work for you. The design was introduced over 150 years ago, and thanks to the large bay windows, you get perfect views. This style is excellent for a living room extension or bedroom, and it is implemented best when you have an excellent view of the outside. It does, however, cost a bit more than the other basic designs and because it may need the use of other materials such as brick. 

Lean-To Conservatory Cost 

If you are on a tight budget, but you still want a good conservatory, then the lean-to is the best style for you. It is a suitable design for most homes, especially if the roof isn’t set too high. The name lean-to comes from the fact that the roof of this Conservatory leans from the main house to cover the extension. This makes it cheap and easy to install the roof, but remember to go glass where you can.

Edwardian Conservatory Cost 

These are rectangular-shaped and may have a traditional design, which is why it is a favourite in Britain. Due to the shape, it may look and feel bigger on the inside; hence it would be the best option if you want to feel like you’ve added a load more space.

P-Shaped Conservatory Cost 

If you like the Victorian and lean-to styles, then the P-shaped Conservatory may suit you since it is a blend of both, but better. It is a great design when you want your Conservatory to be a room on its own, so if you want to create an extra living room this could be perfect.

Bespoke Designs

The best thing about the growth of technology is that it has given you more options. If none of the main styles takes your fancy, then you should get your Conservatory custom made. You can have a completely new and unique style drawn up for you and get a quote for the same.

Remember that a bespoke design will cost more depending on what you want, but you can get a much simpler design made for less.

Differences in Conservatory Walls

There are two main types of walls from which to choose either dwarf or glazed. The dwarf wall is more expensive, but this depends on the type of glass that you will choose for glazed walls.

Dwarf Walls

The name dwarf walls came about because you don’t get a complete glass wall. Instead, your contractor will set up a smaller base then the glass on top of that, but the size is generally smaller than a standard structure. It is preferred because it gives your frame stronger support.

However, due to the extra work that is required for such a build, it will cost you at least £700 more.

Full-size walls

These go from top to the bottom of your Conservatory. While many homeowners usually prefer the dwarf option, the glazed walls are becoming more popular since they are cost-effective and still strong enough.

They are a wonderful option, but there are some issues you should look a before deciding. The strength of the walls is one thing, and since it is made of glass, you need a solid frame to support it, so uPVC is probably not the best option. It needs to be strong enough to support the type of roof you choose. Other factors to consider include:

  • Is it secure? Since it is all glass, it can be quite easy for burglars to break into so you may want to invest in tougher glass. Unfortunately, this will increase the final cost of the Conservatory, which is why many people opt for dwarf walls in the first place.
  • Insulation. If you want to keep the Conservatory warm enough so that it is not a cold spot in your house. Fully glazed windows may cost a lot depending on the size of your Conservatory, and it may make more sense to have the dwarf wall. However, get a comparison from your contractor and enquire about how well the glazed walls perform against a dwarf one, so you make a more informed decision.

Tip: If you’re worried about it getting cold, you can always opt for triple glazing.

How much do conservatory extensions cost?

In many ways, a conservatory is an extension other than the fact that they are usually for extending the living area. However, you can have a conservatory for different rooms in your house, such as a bedroom or kitchen. The kitchen extension is most common, and the prices for achieving this are usually different.

I personally only really use mine for reading, but I love it!

Kitchen conservatories

To ensure that this extension serves as a full kitchen with all the provisions, it will cost you a bit more than the standard Conservatory. It is a great way of giving your home a bit of a twist since it can be made to accommodate a dining area hence serving the purpose of a standard structure. It also adds more light to the home and may also increase the sale value of your property if you are looking to sell in the future.

Even for a small kitchen, the prices are much higher than that of the regular Conservatory. This is mostly because of the new fittings required, but the final look is worth every coin. The following is a table that summarizes the cost of a standard 2500×3500 kitchen extension made using UPVC.

Type of Conservatory Type of kitchen Cost
Edwardian  Basic design with appliances £14,000 – £18,000
Lean-To Ready to assemble kitchen with no appliances £7,300 – £9,800
Edwardian Custom kitchen with appliances £18,000 – £27,000
Lean-To Basic design with appliances £13,500 – £16,000

3×3 Conservatories Prices

This is the standard size of a conservatory as it offers adequate space for family time. These extensions are usually pretty easy to construct. If you need more space without going for the full 4×4, you can request a quote for a 4×3. The following are price estimates for an affordable, complete build 3×3 design.

Type of Conservatory Frame and Roof Materials Cost
Victorian UPVC and polycarbonate £9,000 to £11,000
Edwardian  UPVC and Glass £8,500 to £10,000
Lean-To UPVC and polycarbonate £6,500 to £7,500
Gable UPVC and Glass £7,000 to £8,000

4×4 Conservatories Prices

These are much larger 16 square meters conservatories that are great where you need more room, and there is available space. However, you need to be careful with the design as it could require planning permission if it is too big. Ensure that you consult your contractor on this to avoid extra charges. The following is a price guide for such a structure using a UPVC frame.

Type of Conservatory  Type of Roof  Cost
Edwardian Polycarbonate £11,000 to 13,000
Gable  Polycarbonate £13,000 to £15,000
Lean-To Glass £9,000 to £12,000
Victorian Glass £12,500 to £14,000