Garden Houses

Looking for extra space at home? Our garden houses are the ideal home improvement solution to create extra space at home. As they say, don’t move, improve! 

An insulated garden house from Green Retreats is a cost-effective and hassle-free way to make extra room at home. Planning permission is rarely required, saving time and money, and the buildings are fully installed by our expert teams within 2-5 days!

We have 4 garden house designs to choose from in either a contemporary or traditional style. Each of our 4 designs comes in over 70 different size configurations, covering everything from a small one-person building to a grand large garden house.


Explore our ranges of garden room building designs. At Green Retreats we have a transparent pricing policy where you can see a fully inclusive price for every building design, size and option. Click below to shop.

Starting From: £11,732

Benefits of a Garden House

Planning rarely required

As our buildings fall under permitted development, planning permission is rarely required, even for those in AONB.

Installed in 2-5 days

Due to the meticulous construction and design of our buildings, they usually take between 2 and 5 days to be constructed.

Insulated for year-round use

Enjoy year-round use with Green Retreats. Our modern garden houses are well insulated and come as standard with an oil-filled radiator.

12-year guarantee for quality

All garden houses come with a 12-year guarantee for your peace of mind. Rest easy knowing no maintenance is required.


Our garden houses are so versatile that they can be used for almost anything you need them to be. Temporary guest room, garden office, art studio, gym, music studio – you name it, we can help!

Striving for simplicity, our team are on hand to carry out a design consultation when it suits you. We will assess your available space, accessibility and advise you on your options and materials.

Book a Design Consultation

  • Select your preference of which type of consultation you would prefer to start with, using the tick boxes below, and we will be in touch to arrange a suitable date and time:
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Design Your Building

Start creating your ideal garden room today using our online design tool. Discover and explore the range of styles, sizes, finishes we have available; plus get an accurate cost as you design.

See your garden building ideas come to life on screen, then save your design to come back and view or edit again at any time.

Also compatible with mobile and tablet devices

Go to Design Tool

Visit Our Showroom

We now have 2 showrooms! Our Westcott showroom is the largest of its kind, showcasing 17 buildings models, all varying in use and purpose. This includes Green Retreats, The Garden Office and The Annex Range. Our new Twickenham showroom showcases our 3 most popular building models and acts as a ‘hub’ closer to our London based customers.

Open 7 days a week, you can drop in whenever you please – with no appointments needed!

Our Showrooms

Finance Options

Providing flexible finance options on all of our building ranges, you can pay off your building spread over 3 -10 years with a monthly instalment plan.

Payment Process

  • £300 deposit
  • 60% at 6 weeks
  • 30% on the final day of initial construction
  • 10% on project completion

    Including electrics, plastering and other optional extras


If you’re looking to live in one of our garden houses, look no further than our annex range! These permanent living solutions have the charm of Green Retreats signature style but are designed to the high building specs required for housing, complete with kitchen and bathrooms with plumbing. Because the annex range is compliant with building regulations, it means you can live in these stunning garden houses all year round.

Go to Ideas Gallery


Whether you’re looking for something more compact and cosy, or a large open space – we have something for everyone.
All of our building sizes are based on internal footprint measurements to allow customers to start planning their space layout and get an idea on the actual useable space they are adding.


Our garden buildings are crafted using only premium sustainable and locally sourced materials for a superior finish. Every building comes with a comprehensive 12-year guarantee for quality, and are designed for a 30 year life.

Fully insulated to be as warm, dry and comfortable as a room inside your home. Find out more about our construction methods…

Our Transparent Pricing

We include everything needed to get your building up and running within your quoted price – including base installation and VAT. As well as this you will receive a french sliding door set, flooring, plug sockets and much more to get you started as soon as construction finished.

Built to last, our buildings are suited for all year round. Meaning you can exercise at the comfort of your home whether it be rain or shine – no need for trips to the gym in the rain! Completely sealed and insulated just like a room in your home, our products can be used during the freezing winter months, and during the pouring rain.

garden office ideas


Yes, they are warm enough to use throughout the year as they are all well insulated and come with a wall-mounted radiator as standard.

Yes, we can install partition walls in any of our large garden houses. Please enquire for more details.

Our garden rooms are not designed to be lived in as they do not comply to building regulations. If you would like to live in a garden house, The Annex is part of The Green Retreats Group and offers garden annexes with full planning permission, which comply with building regulations.

Whilst our garden rooms are temporary structures and are moveable. It is worth considering that the costs to move a building is chargeable to you and can equate to an amount that does not make moving the building viable.

Our garden houses will need to remain free-standing due to the nature of their construction. However, we can build as close as 400mm to any solid obstacle, such as your house.

We are only able to construct buildings that are either square or rectangular within the Green Retreats range.

We don’t offer a completely soundproof solution for your garden room. We do, however, offer an acoustic pack which reduces the transfer of sound to approximately -45db – however, this is not ‘soundproof’. Although we use industry-leading acoustically laminated glass, this is the least effective component of our acoustic pack. Please bear in mind that the more glass you opt for in your garden room, the lesser the effect the acoustic pack will have.

Planning permission is not normally required as our buildings fall under permitted development (built under 2.5m high externally). Most houses, even in conservation areas and areas of outstanding natural beauty (AONB), have permitted development rights. Flats and listed buildings have no permitted development rights, so will always need planning permission. Don’t worry though, as planning is a relatively simple process for our garden rooms and we are on-hand to help with this process.

If you are looking to install a bathroom or other facility that would require water to your building, we would be happy to liaise with your plumber of choice to ensure they are comfortable carrying out all plumbing work required to and from the building.

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Building Measurements

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


Design Your Building

Start designing your garden room today using our online Visualiser tool. You’ll be able to choose your style, size, finishes and get an accurate cost.

Design Your Building