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Garden offices and garden rooms by Extra Rooms

Garden Room Construction Timelapse

See how a Garden Room is assembled quickly and efficiently on site after being built and pre-assembled in our workshop - another happy customer

Soundproofing technology

We are pleased to announce our soundproofing technology has gained a patent, allowing us to deliver sound suppression levels we can guarantee in writing and giving us an extra edge against the competition, as leading suppliers of soundproofed garden rooms.

What is the principle behind it?

Hard fixed surfaces tend to reflect sound and soft surfaces tend to absorb sound, our technology uses both of these factors to dampen the sound transmission. 

This has been established and understood in the soundproofing world for many years, but our unique system utilises these principles in a simple way to give better results.

It is not rocket science! Our system simply performs better than anyone else, and enables us to deliver what we promise.

Our Soundproofing.

Results you can trust, guaranteed.

Why not get an accurate price or order a brochure ?- just use these links.

Or give us a call on 01159 899 555 or email with your name and phone number and we'll be happy to give you a call.

Bespoke garden rooms

Extrarooms provides high quality, affordable, highly insulated garden rooms, double glazed, bespoke garden offices.

You can see a huge range of garden buildings we've created over the years.

You might be looking for a home office, home gym, additional living space, a log cabin like man cave, work from home, or another use. Our garden office buildings can be designed to meet your needs

At Extra Rooms we build all our garden rooms ourselves from scratch. As a result you can have any shape, size or configuration you want - it’s all about what suits you and your garden at no extra cost. See our garden office case studies.

For example: if you want your garden building to be extra-green we can build it with a sedum roof and sheep's wool insulation. Or, if you plan to use your garden room as a gym we can install bespoke wiring and electrical sockets to accommodate gym, audio and visual equipment.

Our clients spend a lot of time in their garden buildings and therefore it’s imperative that our attention to detail and quality of service ensures a great experience for years to come.

Construction of our garden offices

We construct all of our garden offices and garden studios by hand. Unlike many of our competitors, at Extra Rooms everything is screwed together, not nailed. This shows in the durability and strength of our garden buildings. Click here to see how strong they actually are.

Garden room security and maintenance

All our windows and toughened glass doors are fully double glazed, with uPVC rather than timber frames, so no painting is required. They also offer much improved security, with multi-point locking. All our garden buildings come with insurance approved 5 lever locks. Construction grade timber is used throughout and is from sustainable sources.

Timber-framed and plastered

Even though our garden buildings are designed to blend effortlessly into the environment they are in, they couldn’t be further away from 'the outdoors' internally - all our garden buildings are plastered and painted for that 'real room' feel' and are finished to the same standard as the rooms inside your house.


All of our garden rooms are fully plastered and have insulated walls that are treble lined, 4-5 inches thick, providing a cavity with extremely high insulation. As well as being very sturdy and well-insulated, this also allows us to use real house windows and doors.

Installation of our garden offices

Nearly all our installations are completed in just one day so we can provide you with your dream garden building with minimum disruption.

How much does a garden office cost?

We have developed a useful price specifier - just visit this specification page to submit your requirements to us and we'll get back to you really quickly with a cost and some more details of how we'll deliver you a top quality garden room. We can also quote for our top spec specialist sound proofed music studios, consisting of two buildings sleeved inside each other for maximum soundproofing for drummers etc, but these are in a class of their own, and are highly specialised buildings.

How we work

Unlike a lot of other garden room and garden office suppliers, we build everything ourselves. In our opinion this is the only way to make sure that your garden building is the very best quality and that you get the best value for your money.

Why choose Extra Rooms

Green Check

Bespoke construction to suit your needs

Green Check

Superior attention to detail and quality

Green Check

In house building and constant client supervision

Green Check

Fast onsite installation (70% completed in 1 day)

How does it work?


Enquiry online or by phone

Get in touch with our friendly team through our contact us page or by calling us at 01159 899 555. We will help you to understand your requirements and provide you with a more accurate quote for your bespoke garden room


Site visit and project details specifications

We will schedule an on-site visit with one of our our extraroom team members, to discuss the project with you in detail and take measurements for project drawings



Offsite building construction and monitoring

You are very welcome to come and visit our factory to inspect progress, quality and finish during and after construction. We can provide you construction progress photos during manufacture  to monitor progress and specification.


Fast on site building installation

Our teams of skilled tradesmen normally install foundations and complete the garden room installation in a day, up to 15 square metres, depending on distance travelled. This makes us one of the fastest and least disruptive in the business. Allow 2-3 days for very large buildings

On site installation timelapse video

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Extrarooms Brochure 400 (1)

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Our garden office brochure contains building specifications, installation and construction details, pricing and guarantees, as well as general case studies and photographs.

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