There are two kinds of glass structure.
Single glazed glass rooms start from £15,000, including installation and VAT. The styles are on our glass rooms page.
The thermally broken Glass Extension starts from £30,000 including VAT, with the base and groundworks included. It is built to be lived in all year. See the Glass Extension.
At Open Space Concepts, we design and install the structure to suit your home. Ask for a clear quote, with no obligation.
To get your free quote, fill out our online contact form or give us a call on 0808 168 0043.
What factors will impact the cost of your glass extension?
Because our glass extensions are fully bespoke, there are several factors that will impact the final cost.
Size and complexity
As you’d expect, the bigger your glass extension is, the more it will cost. Similarly, if you choose a complex design, this will cost more than a very basic glass extension.
When you contact us for a quote, we’ll ask you for an estimate of the dimensions for your glass extension. Don’t worry about being completely precise – we’ll come to your property and take accurate measurements if you choose to go ahead with your project.
Type of glass extension
For a single glazed solution, choose a glass room. These start from £15,000 and are listed on our glass rooms page:
- Vue Pod glass room: A glass room with a sleek, minimalist design and aluminium beams along the flat roof.
- Ambient glass room: A glass room similar to the Vue Pod, with a pitched roof instead of a flat roof.
- Vue Grande glass room: A glass room with a cubist design and a front overhang.
- Ascend glass room: A glass room with a pitched roof.
- Vue Primo glass room: A glass room with a flat roof and statement rafters.
For a thermally broken solution, the Glass Extension is a different structure. It starts from £30,000 including VAT, and the base and groundworks are included. Double or triple glazing is available, installation typically takes 1 to 2 weeks, and the warranty is 10 years.
Additional features
There are a variety of additional features you might choose to add to your glass extension, which will also impact the final cost of the structure.
We build all our glass extensions and other garden rooms modularly, so you can choose to add extra features at a later date if you’re not sure whether you want them at the time of installation.
Some of the features you can add to your glass extension include:
- LED lighting: LED lights can be built into the roof of your glass extension to beautifully illuminate the space at night.
- Infrared heating: Comfortably enjoy your glass extension even on chilly winter days with built-in infrared heating.
- Drop-down screens: Make your glass extension more private with remote-controlled drop-down screens.
What does the price include?
What is included depends on which structure you choose.
Glass Extension
The Glass Extension starts from £30,000 including VAT. That price includes the base and groundworks. It is thermally broken, with double or triple glazing available, and it is installed by our own team in 1 to 2 weeks. The warranty is 10 years.
Single glazed glass rooms
Glass rooms start from £15,000, including installation and VAT. The price includes:
- A high-quality structure crafted by Europe’s top manufacturers. These rooms are made from toughened glass and durable aluminium.
- Expert design consultation. Our design team will work with you on a made to measure glass room.
- Expert installation. Our team has over 30 years of experience in the industry. A glass room is usually installed in 1 to 2 days.
- A 10 year warranty on a glass room.
Planning the cost
As well as the structure itself, plan for these costs:
- Furnishings
- Electrical work
- Planning permission (if required)
We will design the structure around how you want to use the room. Get in touch with us for a quote.
Where can I find more information about glass extension costs?
If you’d like more information about our glass extension costs, contact the team today.
We’ll be more than happy to answer any questions you may have and can provide you with an indicative quote if you already have a project in mind.
Don’t worry – there’s no obligation to make a purchase if you decide our glass extensions aren’t right for you, and we won’t use any pushy sales tactics.
Glass extension cost FAQs
How does a Glass Extension compare with a brick extension?
The Glass Extension is usually a shorter project than a brick extension. It is made off site and typically installed in 1 to 2 weeks. Many projects fall within permitted development.
It is a thermally broken aluminium structure, from £30,000 including VAT, with the base and groundworks included. Read more on the Glass Extension page.
Do I need planning permission for a glass extension?
No, glass extensions do not require planning permission in the majority of cases. If your property is one of the few that does require planning permission, we’ll be able to assist you with the process to make it easy and stress-free.
Check out our guide to planning permission and building control for more information.
Do glass extensions require any maintenance?
Generally, glass extensions require very little maintenance. The roofs are pitched at an angle that allows dirt and water to roll right off, so you won’t have to clean yours very often.
If the roof does need cleaning, simply use a power washer or hose to remove any dirt, scrubbing at any stubborn spots with a damp cloth.
What is the average lifespan of a glass extension?
A glass extension is designed to last for at least 30 years, but with the proper care and maintenance it can last a lifetime.