Why choose us
Why choose us?
Bespoke garden offices, studios & annexes built to last.
We built our first garden room in Brighton nearly 20 years ago – and it sparked a craft we’ve been perfecting ever since. Today, we design and build high-quality garden rooms across Sussex and Surrey, creating tailored spaces that transform the way our clients live and work.
From compact urban gardens to large rural plots, we bring experience, creativity and precision to every project. Our garden rooms are used for:
- Garden offices for productive, year-round working
- Art and music studios designed for creativity
- Home gyms and Pilates rooms with space to move
- Yoga and therapy studios built for calm and clarity
- Garden annexes for extra living space
- Flexible retreats for work, play, or relaxation

A local company
With many years’ experience.
Hundreds built
Garden rooms and annexes built all over Sussex and the South-East.
Tailor-made
Garden rooms designed and tailor-made just for you.
Fully finished
A fully-finished garden room from foundations to flooring.
After-care pledge
The Garden Room & Annex Company’s unique after-care pledge.
Built around you
Every project begins with your ideas. We shape your garden room around your lifestyle, your garden, and your budget – and we build it with the meticulous standards that have become our hallmark.
Unmatched craftsmanship & aftercare
We aim to exceed expectations on every build, from the structure itself to the finishing touches. And our commitment doesn’t end when we leave. Our six-month after-care visit ensures your garden room is performing perfectly, just as it did on day one.
A range of styles, fully customisable
Drawing on two decades of experience and client preferences, we’ve developed a refined range of versatile garden room and annexe styles. Each can be personalised to suit your space, aesthetic and needs.
If you’re looking for a custom garden room in Sussex or Surrey, built with expertise, honesty, and impeccable craftsmanship, we’re here to create your ideal retreat.
Absolutely blown away by our new garden room. Grant and the team were quick, professional, on-time (in fact beat the expected deadline) and we ended up with a fantastic office/garden room. Very very pleased with all aspects. They also dealt with every last minute change we threw at them. Offered advice on local regulations. Suggested design improvements. We love it and could not recommend any more highly.
The team at The Garden Room & Annex Company did a fantastic job building our new annexe. It looks great and all the guys involved in the build were a pleasure to be around. They were friendly, polite and most importantly went the extra mile to make sure everything was perfect. Would highly recommend!
Our work
Some of our garden offices
Let’s create your perfect garden room
Book a free, no-obligation design consultation and site survey. We’ll talk through your ideas, check planning for you and give you a detailed, fully itemised quote.




