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How much would an average size orangery cost?

How much would an average size orangery cost?

The answer to what is the average cost of an orangery in 2019

If you and your family have been thinking about adding an orangery to your home, then its highly likely you have a lot of questions about the installation and other options involved in building one.

Not only are you wondering “how much would an average size orangery cost?”, you also want a clear cut idea of the space, money and time you will need to commit to complete this kind of project.

So, in this article we aim to address:

5 important things you need to consider before building an Orangery

  1. To begin with, you need to be prepared to budget for more than a regular conservatory.

This is because, even at the lower end of the prices spectrum, a basic Orangery is going to cost around £15,000 to £20,000 to be fully installed. It’s not unusual for homeowners to spend upwards of £50,000 on a new orangery and some elaborate rooms have gone even higher in price.

If you are surprised by the potential level of investment needed to build an orangery compared to a conservatory, then you should consider that orangeries are more akin to a true home extension than a conservatory. They are built with solid walls on proper foundations with ornate lantern roofing to top them off.

Compared to the cost of an equivalent sized “traditional” home extension, orangeries add just as much monetary re-sale value to the property as an extension, but cost a lot less to build.

According to Real Homes magazine, the typical costs for a “solid-home extension” can range from £1,500 to £3,000 per square metre. Therefore, a small extension of 4m x 4m (16m2 ) could cost from £24,000 to £48,000.

  1. Settle on a design style

average size orangery cost - schematic of an orangerySome of the features you may want to include come with additional costs, which you may be tempted to leave out. However, there are some features that should not be sacrificed for the sake of saving a few pounds—the roof and basic structure.

If you really can’t make your mind up at the beginning of the project about the inside of the room, you can always add interior design layers to your orangery after it is built.

However, the signature roof lantern design of orangeries is a “keeper”, and in our humble opinion much better than opting for any type of pitched roof.

Although you may find additional costs are involved due to the materials and engineering needed to finish the product to your preferences, it is worth your time and money. (check out this page: Orangery Designs & Features)

  1. “An ounce of prevention is worth a ton of cure”

Professionally InstalledPre-plan your installation. Simple things like how are the builders going to access your property, delivery & storage of building materials or keeping your neighbor(s) informed have to be considered.

There are also big things to think about, planning permission for one. It’s a sure bet that an orangery will need planning permission to build – who is sorting this out? You or the installer?

Timing is also worth considering. Although it rains a lot in the UK no matter what the season, do you really want to be building during the depths of the British winter?

  1. Choosing your builder – do your “due diligence”

Making a bad choice here will ruin everything and cost you a small fortune to redress.

Accreditation is a good place to start – NHBC or FENSA, CERTASS, DGCOS memberships give an indication of the professionalism of the installer. But you can’t beat references from previous clients – good or bad, so make sure you speak to as many previous clients as practical.

  1. Compare written quotations – don’t go off the first price you get.

cheap lean to conservatoriesGet detailed written quotations from at least 4 reputable sources. These quotes should detail all aspects of the work being undertaken and give a fixed cost.

We have seen that it’s not always down to the cheapest quote when it comes to homeowners deciding on any particular installer. Rather it’s a combination of price, reputation and the design on offer that tips the balance in favour of one over another.

How much do orangeries cost?

Here is a table of average prices for small, medium and large orangeries.
Orangery TypeFrame Construction MaterialPrice Guide for Orangeries
Basic OrangeryWhite upvc or Timber (pine)From £15,000 upwards
Small 3 x 3 metreTimber (Idigbo or engineered wood)£15,000  to  £18,000
Medium 4 x 3 metreUPVC / Timber Hardwood£18,000 to  £25,000
Large 4 x 4 metre +UPVC /Timber Hardwood£25,000 to  £50,000

In summary

This versatile hybrid of a conservatory and home extension allows for you to blend two different functional spaces into a sunny, warm room that your family & friends can use any time of the year.
Not only adding a new functional quality to your home, but also adding more space and the perfect room for entertaining, adding an orangery to your home is a sensible idea for anyone looking to extend.


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How much would an average size orangery cost?
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How much would an average size orangery cost?
The answer to what is the average cost of an orangery in 2017.
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Stephen James
Stephen has worked in home improvement for over 20 years and is an avid fan of all things to do with home refurbishment.