High spec, fully insulated garden offices


High spec, highly insulated garden offices

Welcome to the STUDIO by Green Unit

The STUDIO is Green Unit’s high quality, garden office and studio space.

At Green Unit we design and manufacture the complete STUDIO building in our Oxfordshire factory using the latest modular modern methods of construction. The STUDIO is optimally designed for transportation for a smooth offsite-to-onsite transition. To minimise onsite disturbance for you and your neighbours the STUDIO is delivered complete – there are no on-site building works and our friendly team install the low-impact foundations in your garden on the day of delivery.

The STUDIO - luxury garden office by Green Unit - external angle view

Why choose the STUDIO?

We have years of offsite construction experience, designing and building sustainable buildings to the highest quality standards.

Below we outline just some of the benefits you can expect when you buy the STUDIO garden office from Green Unit:

Market-leading specification:

  • 140mm high-grade, sustainable insulation for all-year-round use
  • Quality double glazing as standard
  • High tech, modular screw-pile foundation technology
  • Rooflight creates a naturally light-filled garden studio
  • Elegantly designed to create a cosy and inviting space

No onsite construction:

  • No messy building works in your garden
  • Installed in one day by the Green Unit team
  • Turnkey solution – we look after foundations, delivery, & installation

Factory-finished quality:

  • Modular modern methods of construction used
  • Factory finished quality (no onsite building work)
  • Built in 100% renewable-energy factory
  • Green Unit team on hand to guide you

Our range of STUDIO garden office rooms


3m x 4m (external dimensions)
Guide price:
£22,245 (includes VAT)


3m x 6m (external dimensions)
Guide price:
£25,995 (includes VAT)
Shed option provides 3sqm storage space within unit


3m x 8m (external dimensions)
Guide price:
£28,995 (includes VAT)
Shed option provides 3sqm storage space within unit

Included with the costs of the STUDIO garden room we supply a high-quality, fully-insulated garden office room that is ready for you to use straight away. Costs include the pre-assembled STUDIO with flooring, wall finishes, heating, lighting (internal and external), electrical sockets, windows and doorways, foundations, delivery and installation in your garden. Please note that guide prices are subject to change without prior notice due to raw material price fluctuations.

There are just a few additional costs that you may need to consider including electrical connections from your home to the STUDIO, furniture, decor, and curtains or blinds (if desired).

If you are looking for an alternative design, we also offer our ARC I design, which is our high-quality, curved modular building, which is available at a guide price of £46,800 (incl. VAT) for a 13sqm unit (Gross Internal Area).

The STUDIO luxury garden office by Green Unit - side view


Some of the most frequently asked questions about our STUDIO garden offices.

Do I need planning permission for a garden office?

In most cases planning permission is not required for outbuildings including garden rooms or home offices in the garden as this is covered within your permitted development rights. 

There are some situations that would require planning permission for your outbuilding, such as if your home is a listed building or is located in an Area of Outstanding Natural Beauty or a National Park.

It is the responsibility of the customer to ensure that planning permission is not required or to ensure that the correct permission is in place, if required. The Planning Portal has useful information on planning permission for outbuildings.

Green Unit can provide support for planning permission for an additional cost.

Why do you show guide prices on your website?

In many cases the price that you pay will not change, or will change only marginally, to the guide price shown on our website. We show guide prices because in some circumstances there are additional costs incurred due to: the location; additional access and cranage requirements; deeper foundations subject to ground conditions; or optional upgrades.

Please note that all guide prices are subject to change without prior notice.

What makes the STUDIO sustainable?

At Green Unit we pride ourselves on our commitment to sustainable construction. Our 10 years of expertise in the sector has helped to influence how we designed the STUDIO to provide you with a highly insulated, thermally efficient, and airtight garden room. As a timber structure, the STUDIO uses FSC certified UK sourced timber with sustainable Poplar or Cedar for the external cladding. Insulation is 140mm of carbon negative, recycled wood fibre. All windows and doorways are double glazed and we only use efficient, LED lighting. Find out more about our commitment to sustainability.

Can I choose different options for my new garden office?

You will have a choice of flooring options including vinyl plank or carpet tile options. A shed option is available on our medium and large STUDIO options (STUDIO II and III) which provides 3sqm separate storage space within the unit. The entrance doorway and window on the side elevation can be located on either side, depending on the orientation of the room within your garden.

Will Green Unit install the garden office unit for me? What access is required?

Yes, our friendly team will install your new garden office and ensure everything is ready for you before we hand over the keys! We operate an efficient offsite-to-onsite delivery process, which means that we require suitable access to your garden for delivery via a mobile crane. Once in situ and ready to crane the STUDIO into position, the vehicle’s supporting legs extend to enable a smooth offsite-to-onsite transition.

What do I need to get started?

We recommend using the form below to download our brochure and request an initial consultation. During the consultation, we will discuss your requirements, including details about the proposed location of your garden office. Following the initial consultation, we can provide you with a cost estimate. Should you wish to proceed we will request a £250 deposit.

Will Green Unit visit my site before delivery?

Yes, we can carry out both virtual and physical site surveys. We will request key information from you including Google location pins or what3words codes and photographs in order to carry out a virtual site assessment prior to arranging for a member of our team to visit your site. A deposit of £250 will be required prior to a physical site survey. Physical site surveys more than 45 miles from Green Unit’s factory (OX14 3ES) may incur charges to cover our additional costs.

Where will the garden office be built?

We design and build in our offsite manufacturing facility in Oxfordshire using methods of modern construction. Building entirely offsite has many benefits to our customers including excellent quality-control that is hard to match with onsite construction, as well as the ability to build in any weather. Your STUDIO garden room will be fully constructed when it leaves our factory meaning that there are no messy building works required in your garden.

6 simple steps to your new garden office

Contact us

Fill in the form below to download our brochure explaining everything you need to know about purchasing your new garden office from Green Unit. A member of our team will arrange a convenient time for an initial consultation.

Book a free consultation

During your initial 15-minute consultation we will discuss your requirements, including your preferred STUDIO size and the location in your garden.

Personalised cost estimate

If you’d like to progress, we’ll request a £250 deposit at this stage. We’ll then we will provide a personalised cost estimate. 

Site survey

We carry out a site survey (virtual and physical) to determine the scope of works which we’ll follow up with a detailed quotation.


If you’re happy with your quotation, we’ll agree the programme for the offsite construction of your new STUDIO and confirm a delivery date with you, keeping you informed with progress as the build progresses. We will request a 50% stage payment (less the £250 already paid) to start the build programme of your STUDIO.

Delivery and installation

On your confirmed delivery day, our friendly team will arrive ahead of your new STUDIO room to arrange the screw pile foundations. They will then oversee the full installation process before handing you the keys. All in a day’s work! We will submit our final invoice for the balance due on completion.

Contact us – call 01865 634740 or fill out this form

Fill out the form to download our brochure and book a consultation

Our STUDIO brochure explains everything you need to know about purchasing your new garden office from Green Unit.

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