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    • The Annex
          • The Annex specialises in permanent living solutions, creating garden houses complete with a kitchen and bathroom. Available in two customisable designs.

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Using our configurator you can design your perfect garden office with minimal effort, ensuring it’s tailored to your own personal preferences and specifications.

You can get a great idea of how your new garden office will look by using the 360 degree rotating viewer.

Also compatible with mobile and tablet devices

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Here at The Annex, we’re beginning to get into the festive spirit and preparing for the most wonderful time of year. 

Christmas Opening Hours

The Annex showroom is open over the Christmas period with a few exceptions. We believe that Christmas is a time to spend with family, which is why our Buckinghamshire showroom will be closed on Christmas Day and Boxing Day. On the 27th, 28th and 29th December, we are open as normal. Our showroom reopens on Thursday 2nd January.

Christmas Opening Hours

Tues 24th Dec  |  9am – 2pm
Wed 25th Dec  |  CLOSED
Thurs 26th Dec |  CLOSED
Weds 1st Jan  |  CLOSED

Our new and improved showroom offers you the opportunity to view all 17 of our fully furnished garden rooms from our other brands in an indoor and outdoor environment. Enjoy the brisk Winter air in our new outdoor show-space, with 8 garden rooms, including 4 of our annexes, for you to see exactly what to expect from our garden rooms in their natural environment or pop into the warmth and pay our showroom hosts a visit, where they’ll be able to answer all your burning annexe questions.

Interior of Annex decorated for Christmas

Make A Day of It

Visiting our showroom has more than one benefit. Not only can you find out all there is to know about starting your garden room journey but you can also pick up an exclusive voucher which entitles you to local discounts.

Eat & Drink

Enjoy a bite to eat along with a warming drink from local gastropub The Long Dog Remember that voucher we mentioned earlier? Well, it entitles you to 10% off your food bill! Don’t forget to give Piggy the Frenchie a pet whilst you’re there! During Christmas, you can even pick up beautiful fresh Christmas trees around the back of the pub.

Be At One With Nature

Just a 5-minute drive from our showroom, you’ll find the National Trust site, Waddesdon Manor. Waddesdon Manor certainly is the place to be during Christmas. The manor always puts on a spectacular light show which is well worth a visit and don’t forget to take a wander inside the manor to check out how they’ve decorated this Christmas. Check out their website to find out more!

Fancy Some Shopping?

For the finer things in life, don’t forget to pop over to Bicester Village to round off your trip. There you’ll find a vast selection of luxury shops and swish restaurants to dine at. During Christmas, Bicester Village transforms itself into a fairytale setting so we would highly recommend paying it a visit, even if it is just to window shop.

Want to find out more about what we offer? Why not request your FREE The Garden Office brochure to browse from the comfort of your home!

Brochure Request

The Green Retreats Group is expanding

with a second showroom in London!


We are excited to announce that very soon we will be opening our very first London Showroom. With so many of our lovely customers being based in and around London, it makes sense for us to develop our second showroom on their doorstep.

Green Retreats London Garden Room Showroom – Coming Soon!

Our new London showroom will be an addition to our existing Buckinghamshire Showroom; As the UK’s largest indoor showroom, we showcase 17 garden room buildings, each alternating in design and style. Also with different finishes, sizing and layout options, we have a product that suits everyone.

Our London Showroom will be more of a ‘hub’ showroom to our Buckinghamshire showroom – including 3 entirely furnished garden buildings; alongside an incredibly detailed VR experience that is like no other, allowing you to design your own garden room and tour around it.

Work on the new showroom has officially started! So we will be sharing the process and keeping you all updated on progress via our website and social media platforms –  so keep your eyes peeled for more updates!

London Garden Room Showroom

– What

A second showroom in London.

– Why

To be where many of our customers are based, offering a simpler and quicker opportunity to engage with our products.

– Where

Twickenham – London.

– When


– How

Proudly working with Cargo Interiors for the internal fit out of our showroom.

Stay tuned to find out more!

At The Annex, we take our responsibility to the environment very seriously. At every stage of development, we consider our actions on the environment so that we can perfect our methods and materials. As part of The Green Retreats Group, we have worked over the past 13 years to continually improve our processes to be industry leaders in eco-friendly garden annex buildings.


So, how do we do it?

Our Product

Our Processes

Our Factory

Our Offices

Our People

Our Suppliers

When we review our Green Credentials, we look at the above 6 areas. We then pick apart each area with a fine tooth comb to review every detail in focus.