About The Annex
Green Retreats’ signature tiny homes and annexes.
The Annex is the Green Retreats’ signature range of garden homes and granny annexes. The Annex buildings are a turnkey and complete solution to add an annexe to your property.
Whether you’re looking for a family care solution or flexible accommodation, our buildings are a comfortable and stylish way to add value to your life and home.
Shop The Annex
Choose from 3 designs which offer different options and benefits, as well as a distinct style.
To see our fully inclusive pricing and options, select your favourite building design below:
What’s the difference between
Caravan Act vs Building Control
Caravan Act
– Planning Permissing generally not required
– 2 Building styles to choose from in limited sizes.
– Soft sheen laminated interior walls.
– Built to BS3632 regulations
– Fewer options and sizes to choose from.
– 5-8 month lead time
– 5% VAT rate
Building Control
– Planning permission application included
– 1 Building style available in over 78 sizes
– Painted plaster interior walls
– Built to Building Regulations
– A wide range of sizes and options for a tailored building
– 8-12 month lead time
– 20% VAT rate
Annex Launch Offer
£5,000 Voucher towards your order
Be one of the first 10 customers to place an order and receive a £5,000 voucher to spend on options and upgrades - the perfect way to personalise your new garden home.
*TERMS AND CONDITIONS APPLY
- £5,000 voucher valid on the first ten annexe building orders only.
- The promotion cannot be used in conjunction with any other offer.
- The promotion cannot be used in conjunction with finance applications.
- Valid for new orders on the latest pricing version only.
- We reserve the right to withdraw, modify, or suspend any promotion, or amend these terms and conditions at any time without notice if it becomes necessary to do so.
Browse at home…
Request an Annex Brochure
Browse annexe building designs and prices from the comfort of your home.
Request a brochure and be inspired with layout ideas, previous customer projects, samples of finishes and much more.
What’s Included, as standard, with The Annex Range?
- Full professional installation inc. base/foundations, plumbing and electrics
- A choice of internal layouts to suit your needs
- Premium fully fitted kitchens and bathrooms in a range of options
- Inclusive pricing: everything included, no hidden costs. VAT inc.
- Internal electrics, inc. heating, lighting, consumer unit and plug sockets
- Premium insulation in the roof, walls and floor for year-round use
- Maintenance-free, insulated steel roof and floor
- 2.3m French, sliding, or entrance door, with high security locking and premium double-glazing
- When required, professional fees for planning permission or building regulations
Make it yours with a range of upgrade options! Popular options include air-conditioning, additional partition walls and bifold doors.
Green Retreats Showrooms
See the quality of our buildings for yourself by visiting our Buckinghamshire showroom – the only of our two showrooms to feature the Annex Range.
Step inside 4 fully furnished garden annexes in a range of sizes and finishes. Explore the selection of kitchen and bathroom options, and start creating your perfect garden home with our design team, completely free of charge.
WE ARE PROUD TO HAVE WORKED WITH
As the UK’s leading garden room company, Green Retreats are proud to have been featured in many national publications.
Benefits of our Garden Annexes
There are so many reasons to choose garden rooms to create extra space. We’ve put together just a few of them for you…
Designed and built in the UK
Locally Made, Nationally Trusted. Our annexes are designed and crafted right here in the UK, using high-quality materials and expert local workmanship. From first sketch to final screw, we take pride in creating British-built homes that meet the highest standards.
Your Space, Your Way
Add value and versatility. With a range of personalisation options, we will create with you a high-quality annexe that’s not only stylish but also a future-proof addition that can increase your property’s appeal and resale value.
Downsize without Compromise
Smaller space, bigger freedom. Whether moving out of a larger property or rethinking retirement plans, an annexe offers a low-maintenance, future-ready home — all within the comfort of a familiar garden setting.
Multi-generational Living
A Home That Grows With You. From adult children returning home to grandparents moving in, annexes offer flexible living that evolves with your family’s needs — without the need to relocate or extend the main house.
Find inspiration for your Garden Annexe
Build a full-time living tiny home in your garden
What our customers say
We are so pleased to be top rated on Trustpilot
by our customers.
by Louisa (Louisa Tudor)
Fantastic Room in a little London garden!
We now have an amazing room at the bottom of our garden that fits in beautifully and feels as though it has been there for ever. All the staff were incredibly helpful and friendly and the entire process was very straightforward.
by Peter
Can’t beat a Green Retreat!
We cannot recommend Green Retreats highly enough, compare their offer to anyone else and I think they will win the day. The finished result is a garden room of class and something to be proud of. Value is what you get as an overall package and experience, not what just the price tag states. Choose low maintenance materials and you cannot do better than Green Retreats, they simply are very hard to beat!
by Mark
I’d recommend them to anyone
Each element of the team that came were all extremely polite, punctual and very professional. The quality of the materials are extremely high and the overall quality of the garden room is amazing. It’s fabulous to be able to sit in a room outside to work and to relax and enjoy the garden to its full potential. Green Retreats have been superb throughout the process, and we would not hesitate to recommend them to anyone!
by Sarah Levin
What a great company!
The customer care and communication, from the start of my enquiry through to the installation has been exemplary! I’m so pleased with my G2, it not only looks great but it is a
first class product down to the last detail. I can’t recommend Green Retreats highly enough and I’m super excited to relocate my art studio into the garden! Thank you Green Retreats.
FAQs
A garden annexe’s unique purpose is that it can be used as self-contained living accommodation for family members, guest accommodation or multi-generational living space. On top of that, as a year-round practical extra space that feels like home, it can also be used as a workspace, office, studio, gym and much more.
Yes, if built to the right specification, a garden annexe can be lived in year-round. Our garden annexes are fully compliant to either Building Regulations or Caravan Act specification, and are approved for year-round living. This means, unlike some regulations, you won’t need to leave the property for any amount of time in a year.
Garden annexes intended for full-time living will either need planning permission or must comply with the Caravan Act. We offer 3 building designs, one of which requires planning permission, and the other two generally do not – however there are some occasions and circumstances that would mean that planning permission is required. Our friendly and helpful teams can guide you through this process to know which building design is right for you, and we will also take care of any planning applications on your behalf.
Yes, a high-quality annexe can increase your property’s value and resell appeal by offering flexible, self-contained accommodation.
Our garden annexes come with a 12-year warranty and a life expectancy of 30 years. All garden annexe buildings from Green Retreats are maintenance free in their construction, meaning the external cladding, roof and floor will not require treatment to maintain structural integrity, making your investment a hassle-free one.
Caravan Act buildings follow UK legislation for mobile homes and typically require less formal approval, while Building Control buildings are fully compliant with UK Building Regulations and considered permanent structures. What this means for our customers, is that we can offer a range of building options to suit the needs of your project, site and specification. Caravan Act buildings generally are cheaper and faster to build, but do have limitations. Building Control buildings are fully compliant and have a wider range of sizes and options available. For a full guide on the differences, read our blog…
Annexe Quick Quote
Request a quick, no-obligation quote in a few simple steps, and our Sales Team will get back to you as soon as possible.
