About the G-Range
The Original Flat Roof Garden Rooms
The G-Range is our original pent roof garden room design that has been loved by our customers since 2005. The G-Range flat roof garden rooms, offer a compact and modern extra space solution that can be built as close as 300mm to any solid boundary, and most often without the need for planning permission!
Shop the G-Range
Each building comes in over 70 size configurations with a range of personalisation options to ‘make it yours’.
To see our fully inclusive pricing, select your favourite building and explore the price grids and guides.
G1
Graphite Pack
Black Pack
Natural Pack
Traditional cabin style in a modern design with a grand hood that extends from all sides.
From: £23,790G2
Graphite Pack
Black Pack
Natural Pack
Compact and contemporary with squared edges and a shallow front frame that gives a pod-style appearance.
From: £23,790G3
Graphite Pack
Black Pack
Natural Pack
Stylish square-edge design with an extended front frame that creates a striking sheltered surround.
From: £23,790G4
Graphite Pack
Black Pack
Natural Pack
Sharp and architectural with a forward-leaning front frame that creates a dynamic statement design.
From: £24,955G5
Graphite Pack
Black Pack
Natural Pack
Curved corner detail that joins a sheltered hood and enclosed side to create a distinctively different design.
From: £24,955Looking for extra height?
New | A Range
From £30,995
Featuring heights of up to 4m with a triangular apex style roof giving you more space internally to suit your needs, whilst also creating a stand-out feature in your garden.
What’s Included, as standard, with a G-Range Garden Room?
- Full Professional Installation inc. base/foundations and the garden room building
- Maintenance-free pressure treated Redwood Cladding
- High security 2.3m uPVC doors, and opening lozenge window, both premium double-glazed
- Inclusive pricing, everything included for no hidden costs. VAT inc.
- Internal Electrics, inc. Heating, Lighting, Consumer Unit and 3 Double Plug Sockets
- Premium Insulation in the roof, walls and floor for year-round use
- Maintenance-free strong insulated steel roof and floor
- Steel and epoxy resin maintenance-free pent roof with guttering to the rear
- Internal finish of soft-sheen white melamine walls, and a choice of oak laminate flooring
Make it yours with a range of upgrade options! Popular options include air-conditioning, partition walls, bi-fold doors and plastering.
Green Retreats Showrooms
See the quality of our buildings for yourself by visiting one of our showrooms! Choose from our flagship showroom in Buckinghamshire with 21 garden buildings to see, or our hub showroom in Twickenham with 4 buildings on display.
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 flat roof 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 pent roof, or flat roof, garden rooms 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
All G-Range building can be built 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.
Eco friendly build
Landfill-free, solar-powered, carbon-neutral, recycled & sustainable materials are just some reasons Green Retreats is the eco-friendly garden room 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.
Find inspiration for your Green Retreat!
Create extra space at home with our G-Range garden rooms.
A lookbook of our building designs to inspire your project
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!
FAQs
A pent roof garden room, or flat roof garden room, is perfect as a garden office or studio. Leisure uses of games rooms, garden bars, man caves and are also very popular choices for this style of building.
The roof of our G Range designs has a 4 degree slope that runs from the front of the building to the rear of the building to allow water run off to guttering at the read of the building. The roofs are epoxy resin coated steel so are completely maintenance-free!
Planning permission is rarely required with any garden room buildings, but especially those with a flat or pent roof – like our G Range. Because these designs are less than 2.5m tall, they can built without planning permission as close as 40cm to any boundary or obstacle. Permitted development rights would need to be applicable.
Yes they do! Adding a garden room can increase a property’s value by as much as 5-15%, depending on the size and location.
All Green Retreats garden rooms are designed to last up to 30 years, making them a valuable and lasting investment. Built with high-quality materials througout, we also offer a comprehensive 12 year guarantee.
Our Basebox range has a pent or flat roof, and prices start from just £9,860! This base price offers an excellent entry point for those looking to create more space in the home without opting for costly extensions.
