Garden Rooms
by Green Retreats
A garden room is a detached, fully insulated and weather resistant outbuilding designed for year-round use. For over 20 years, Green Retreats has designed and installed high quality garden rooms across the UK. Every building includes:
- 12-Year Guarantee
- Premium Insulation
- Installed Between 2-5 Days
- Professional Installation
- No Planning Permission*
Garden Rooms
Grow your home with Green Retreats
The UK’s leading garden room company
Why Green Retreats?
- 12-year guarantee
- Fully insulated for year-round use
- Installed between 2-5 days
- Professional installation included
- Planning permission rarely required*
As seen on…
Shop our
Garden Room Ranges
Cost-effective
B-Range
From £8,235
Our most cost-effective garden room range, designed and built with form and function in mind.
Shop B-Range
The Original
G-Range
From £23,790
Our classic garden room range with a focus on natural materials and modern composites.
Shop G-RANGE
Extra Height
A-Range
From £30,995
Reach new heights with our apex roof garden rooms, where style and space soar.
Shop A-Range
Elevated Luxury
X1
From £49,950
The X1 garden room has been infused with luxury from inception and embedded in every detail.
Shop X1
Garden Houses
by Green Retreats
Living Solution
The Annex
From £63,090
Our collection of tiny homes, designed for full time living, including building regulations approval.
Shop Annex
Introductory Pricing Ends 18th May!
Now from £8,235 for a limited time.
Following the success of Basebox, we’ve expanded the range with four new designs.
B-Range combines five smart designs using the same trusted materials and streamlined approach, now available with introductory pricing for a limited time.
Visit our Buckinghamshire Showroom to explore the full B-Range.
*TERMS AND CONDITIONS APPLY
- B-Range Introductory Pricing is a limited time promotional discount available on selected B-Range buildings until 18th May 2026.
- This offer cannot be used in conjunction with any other promotion or discount
- Available on installations scheduled to start before 20th July 2026.
- Not available on B1 Kit buildings.
- Not available when using 0% finance.
- Not valid on orders placed through Costco.
- If your project requires planning permission, the offer will only apply if approval is received in time for an eligible installation date.
- After the introductory period ends, prices are expected to increase by £1,250, however this increase may be higher depending on changes in business costs.
- We reserve the right to amend or withdraw the introductory pricing and this promotion at any time without notice.
Find inspiration for your Green Retreat!
Create extra space at home with our fully insulated and year-round garden rooms.
Compare our Garden Rooms
Which garden room range is right for you?
Why Choose Us
20 Years of Know-How
Since 2005, we’ve been crafting garden rooms with a focus on quality, craftsmanship, and service.
5* Rated by Our Customers
Independently rated 5* on Trustpilot by our customers (over 17,000 of you!)
Family Run
Family values are at the heart of everything we do — that’s why our reputation for quality and care speaks for itself.
Dedicated Customer Advisor
To make your garden room journey smooth and stress-free. Plus, ongoing support from a dedicated aftercare team too!
Let's create your
What will your garden room be?
From a dedicated office to a home gym, our garden rooms are multi-functional and can be used in a variety of ways.
What is Included in Every Green Retreats Garden Room
When you choose a Green Retreats garden room, you’re investing in a space built for lasting comfort, effortless installation and complete peace of mind. Here’s what sets every one of our buildings apart:
Professional Installation
Installed in just 2–5 days by our expert team, ensuring a seamless and stress-free process from start to finish.
Double Glazing
Every garden room is fitted with energy-efficient double-glazed doors and windows, keeping your space warm, quiet and secure all year round.
Premium Installation
Built with high-performance thermal insulation in the walls, floor and roof for comfort all year round.
12-year guarantee
Every garden room comes with a comprehensive 12-year guarantee, giving you complete confidence in your investment.
Turnkey Building Package
Every garden room includes heating, lighting, sockets, flooring and stylish cladding, ready for you to step inside and enjoy.
How long does it take to build a garden room?
It takes between 2 and 5 days to install a Green Retreats garden room, offering minimal disruption to your home and garden. The full installation includes laying the base foundations, assembling the walls and roof, making the building watertight, fitting the cladding and completing all electrical work. Every stage is handled by our professional in-house team to ensure a smooth, high-quality finish.
“Excellent staff and, crucially, an end product that we’re really happy with.” – Simon Wright, Green Retreats customer. Read Simon’s full review
Want to see the process in action? Watch our garden room installation video to see the full building process.
Visit Us
Experience our quality garden room ranges and options first hand at our showrooms in London and in Buckinghamshire, open 7 days a week. Our Showrooms
Brochure
Design
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Kevin McCloud
Brand Ambassador For Green Retreats
Kevin McCloud
Gives his Seal of Approval
Architecture guru and BAFTA Award winning TV presenter Kevin McCloud is Green Retreats’ brand ambassador! Kevin was particularly impressed with our state-of-the-art indoor and outdoor showroom, our building quality, manufacturing processes, customer service and ongoing efforts towards sustainability.
What is a garden room?
A garden room is a fully insulated building installed in your garden that creates extra living space separate from your main house.
Unlike a shed or summerhouse, a garden room is designed for comfortable year-round use. Insulated walls, double glazing and professional installation allow it to function like an additional room of your home, just a few steps from your back door.
People use garden rooms in many ways. They can become a home office, gym, creative studio, golf simulator or a quiet place to relax. Because most are installed under Permitted Development, a garden room can often be added faster and with less disruption than a traditional home extension.
For many homeowners, it is one of the simplest ways to gain more space without moving house.
Benefits of our garden rooms
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
All aspects of our garden building construction are handled internally, with our skilled team producing each element from our expansive 65,000 sq. ft production facility in Buckinghamshire. This includes the production of doors and windows, ensuring comprehensive quality assurance of your garden room designs throughout every process stage.
Planning permission rarely required
Most garden buildings fall within permitted development rights, meaning you can avoid the hassle of planning permission to create the extra space you need quickly. There are a few exceptions, depending on the area that your live in and local council rules, but our in-house planning department can handle the whole process for you should you require planning.
Fits close to any solid obstacle
Our construction methods mean we can build as close as 400mm to any solid boundary or obstacle, like a fence or your house giving you the full flexibility of the building position. For a building that’s over 15m2 we can build as close as 1m to a boundary.
Eco friendly build
Landfill-free, solar-powered, carbon-neutral, recycled & sustainable materials are just some reasons Green Retreats is the eco-friendly choice! We take our responsibility to the environment very seriously. From our garden building materials to our factories and showrooms, we take every step possible to be eco-friendly and sustainable.
Read our environmental policy
We are proud to say that the production of our garden rooms from Green Retreats has had no negative impact on the environment
We love to give back and are proud to be a ClimateCare Certified Partner, supporting projects around the world to tackle global climate change and improve the lives of those around us.
Powered by solar energy, our factory, showroom and offices are 100% carbon neutral — leaving no negative impact on the environment.
All timber used is FSC certified and sourced from sustainable forest programmes. We are advocates of using recycling. We also plant five trees to replace every one that we use.
The Green Retreats Group sends no waste to landfill. All waste generated by The Green Retreats Group is either recycled or used as fuel to produce power for our local village power grid.
Garden Room Ideas
Insulated Garden Rooms
Our insulated garden rooms are meticulously engineered using premium-grade insulation techniques throughout the walls, roof, floors and glazing.
Our industry-leading insulated garden rooms have been created to help keep you cool in summer and warm in winter.
What’s more, heating is already included in the price of every building with optional upgrades available for underfloor heating and air-conditioning for complete temperature control.
Insulated Garden Rooms
Contemporary Garden Rooms
Since 2005, Green Retreats has designed the best-selling range of contemporary garden rooms. Our range of designs caters to all styles, tastes, and budgets.
Our contemporary garden buildings can be customised to suit your exact needs, with a comprehensive range of options and upgrades to choose from to really ‘make it yours’.
Modern Garden Rooms
Green Retreats modern garden rooms make for a stylish and cost-effective way to add extra space to your home.
A modern garden building is a flexible space that can be used for any purpose, being much more versatile and cost-effective than other home extension alternatives such as conservatories, loft conversions or garage conversions.
Wooden Garden Rooms
Green Retreats wooden garden rooms are carefully crafted to a superior standard, designed for a 30-year life and backed by a 12-year comprehensive guarantee.
Our range of designs can feature either natural wooden accents or composite accents in graphite or black, tailored to suit your style.
Cheap Garden Rooms
Green Retreats promises to always deliver the best value for money across our range and never compromise on quality, no matter which design or price point you are considering.
Explore our B-Range as our budget-friendly and most-effective garden building.
Shop B-Range
Small Garden Rooms
Even our smallest garden rooms can make for the perfect additional space that your home is crying out for. With gardens being a premium and a luxury in today’s home market, making the most of your garden space with a garden pod doesn’t mean you need to max out on size.
Discover how a small garden studio could make a huge difference to your home and lifestyle. After all, it’s how you use it that counts…
Large Garden Rooms
With sizes available up to 30m2, our large garden rooms are ideal for almost anything you can imagine. Large garden rooms are also the most cost-effective home extension solution per square metre compared to traditional alternatives in the market
Luxury Garden Rooms
We specialise in creating luxury garden buildings to complement your home, built using the same high-quality materials and methods found in modern home construction.
Our garden rooms are designed to be as comfortable as a room in your home, as standard. Creating a luxury garden space is easy when you shop from our range of building designs.
Bespoke Garden Rooms
Green Retreats garden rooms are available in a range of designs, sizes and finishes. The core G-Range of buildings is available in over 70 size configurations, so we’re guaranteed to have a building that will suit your space.
You can ‘make it yours’ with a range of personalisation options, including cladding, lighting, exterior and interior styling options.
Composite Garden Rooms
To create a composite garden building, we offer a range of environmentally friendly composite cladding options for you to choose from. Our composite garden rooms are popular with those looking to create a modern space that’s guaranteed not to change in appearance during its lifetime.
Discover more about our stylish cladding options today!
Eco Garden Rooms
Our environmental policy is unrivalled when it comes to crafting eco garden rooms. Our long-standing and ongoing efforts to offer eco garden rooms start with our materials and end with our factory, showroom and offices.
You can be sure that when you choose a Green Retreats garden building, you are making a responsible choice for the environment.
UK Garden Rooms
We’re proud to say that all of our garden rooms are built and designed in the UK, with all of our UK garden rooms manufactured at our Buckinghamshire production facility. We source as many of the materials we use to produce a Green Retreat as locally as possible. We never subcontract any work on our UK garden rooms outside of our business, so you can rest assured that you’re getting full quality control from start to finish.
Prefab Garden Rooms
Whilst our garden rooms are crafted to your exact specifications, we do create our buildings as prefab garden rooms at our factory to ensure a quick and seamless installation when we’re at your home.
Our prefab buildings are installed at your site within 1-5 days, causing minimal disturbance to your home and life whilst we’re there – a vast improvement on other home extension options.
Garden room designs
Green Retreats is the UK’s leader in garden building designs, with a range of styles, sizes and options to choose from. We have designs to suit every purpose and budget, from cost-effective garden pods to luxurious tiny homes.
Discover our range and start creating your perfect building online using our digital design tool.
DIY Garden Rooms
The core range of Green Retreats buildings have full professional installation included in the listed price; always installed by our own fully trained installers and never outsourced.
If you’re a talented craftsperson and looking for a DIY garden building project, we do offer a self-build option in our popular B-Range.
Garden Room Ideas
Garden rooms come in all shapes and sizes, from large and spacious to small and cosy. Choosing the right one for your home can be challenging with so many options. Good news, we’re here to help! Explore these garden building ideas to find the perfect fit for your space and style.
Case Studies & Ideas
Looking for garden room inspiration? Check out how some of our customers have used their Green Retreat.
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 E Fisher (Diva Fitness)
Excellent choice of supplier for my Garden Studio! So pleased
Green Retreats deserve every single one of my star ratings! They have been very professional right from the start, from welcoming me to their warehouse to helping me make the right choice through to a fabulous installation. The finished studio is amazing, a top quality build and the installation teams were timely, polite and very hard-working.
Thanks to you all…what a fab company!!
by Alexa Garthwaite
Fantastic product and service to match
We had a 3.5m by 5m garden studio installed last month and we are delighted with the result. We are using it as a home gym and love the extra space it has given us! The building also looks fantastic at the bottom of our garden. Green retreats have been an absolute pleasure to deal with. In summary I have been very impressed by both the product and the service provided by green retreats and highly recommend!
Garden Room FAQs
A garden room provides space for endless uses, including a home gym, garden art studio or even garden bar entertainment space. The benefit of choosing an insulated garden room is it can be used all year round, just like any other space in your home. View all our garden room popular uses.
A garden room cannot be used full-time as self-contained living accommodation as this falls outside the permitted development rules. However, you can use a garden room as an occasional guest bedroom.
If you’re looking for an outdoor space to be used as a permanent dwelling, a garden annexe would be much more suitable as they’re designed to be lived in.
Planning permission is typically not required for garden rooms, as they are covered under permitted development rights.
Yes they do! Adding a garden room can increase a property’s value by as much as £50,000 to £100,000, depending on the size and location.
A high-quality garden room can last 25 to 30 years or more, depending on the materials, construction quality, and maintenance. Choosing durable materials, weatherproof roofing, and regular upkeep can significantly extend its lifespan. Additionally, going with a reliable, trusted garden building company can ensure the building is assembled correctly to further longevity.
The cost of a garden room typically ranges from £10,000 to £30,000, depending on factors like size, location, materials, and custom upgrades. Opting for a self-assembly garden room can significantly reduce costs.
Yes, garden rooms do need foundations!
Like any building, garden rooms need a solid foundation for structural stability to support the internal weight of the building, even for smaller buildings. Additionally, a strong foundation ensures they can handle extreme weather like heavy rain and snow without compromising the structural integrity of the garden building.
Garden rooms can be highly energy-efficient when built with high-quality insulation, ensuring year-round comfort and reduced energy costs.
Yes! You can customise a garden room with features like partition walls, bi-fold doors, underfloor heating and more depending on the use of your garden room. You can find out more about our options & upgrades to better customise your building.
Yes. In many cases you can build a garden room next to a neighbour’s fence, as long as it follows the rules for permitted development.
The key restriction is height. If your garden room is within 2 metres of a boundary, it normally needs to be no taller than 2.5 metres to avoid planning permission.
Building size and materials can also matter. If the structure is over 15 square metres, it may need to be at least 1 metre away from the boundary, unless it is built from non combustible materials.
Our Showrooms
See the quality of our garden room buildings for yourself by visiting one of our showrooms! Choose from our flagship showroom in Buckinghamshire with 21 garden rooms to see, or our hub showroom in Twickenham with 4 garden rooms on display.
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.