Perfectly functional and aesthetically pleasing in any outdoor setting.

Overview & Pricing

Size W 3.6m x D 3.0m (external, including deck)
Users 1 – 2
Price £11,350
Installation £3,100
Groundworks To be determined at site survey
Electrical Connection To be determined at site survey
All prices include 20% VAT

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The Midi is our mid-sized and best-selling garden office building. It’s similar in size to the average study or home office that you’d find inside a UK home and is designed with one function in mind; to be a productive workspace for 1 to 2 people.

The attractive exterior design features premium grade western red cedar cladding and industrial steel panels, that blends in beautifully with the aluminium fascia and cappings. The Midi features full height, 2.80 metre sliding doors in dark grey, with a full height side window with fan light to provide necessary ventilation (along with trickle vents in the doors).

High performance structural insulated panel (SIPs) construction reduces heat loss to ensure that the Midi is very energy efficient and minimises running costs, especially during the colder months when the Midi performs excellently. SIPs construction also provides impressive levels of acoustic insulation which makes it perfect for a home office, whether you’re having important meetings over Zoom or just want to work in peace and quiet.

So, whether you’re looking to reap all the benefits of working from home or just add some extra work space to your home, the Midi is an affordable and convenient solution.



  • External Dimensions (inc. deck) – (W) 3660mm (D) x 3070mm x (H) 2500mm
  • Internal Dimensions – (W) 3400mm x (D) 2400mm x (H) 2200mm
  • Right or left-facing models available (above illustration shows right-facing model)

Standard Features

  • No planning permission required
  • Engineered from structural insulated panels (SIPs)
  • Desk space for 1-2 users 

External Finish

  • Front cladding: cedar
  • Rear cladding: corrugated steel (3 colours available)
  • Right cladding: cedar/corrugated steel
  • Left cladding: cedar/corrugated steel
  • Fascia, soffit and copings: grey
  • Roof: EPDM rubberised roof membrane
  • Composite decking: (3 colours available)
  • Guttering at rear

Internal Finish

  • Laminate Oak Flooring: (3 colours available)
  • Internal wall finish: plasterboarded, dry lined and mist-coated
  • Skirting board: white

Windows and Doors

  • 1x Full height 2.8m uPVC sliding doors in anthracite grey
  • 1x Full height side window in anthracite grey with fan light window and trickle vents
  • 4mm toughened glass

Electrical Features

  • 2 x LED panel lights
  • 1 x external up & down wall light
  • Power sockets: 4 x double sockets
  • Consumer unit

Insulation and energy performance

  • We use structural insulated panels (SIPs) that offer one of the highest levels of thermal performance of any readily available, off-site manufactured building material.
  • The closed cell foam does not allow moisture ingress to degrade the insulation performance which can occur with mineral wools and blown cellulose fibre products. A structure built with SIPs will give energy savings of 40%-60% compared to a timber framed building of equal size and insulation U-value.
  • We use 100mm thick SIPs for the walls and floor of our garden office buildings and 150mm thick SIPs for the roof. You can see the respective U-Values below:
  • Thickness: 100mm, U-Value: 0.27W/m2K
  • Thickness: 150mm, U-Value: 0.17W/m2K

Paid Options

  • Underfloor heating (+ £735)
  • 4 x External spotlights in soffit (+ £240)
  • Double outdoor socket (+ £190)


  • Installed by one of our approved installers: £3100


  • To be determined at site survey: Typically £400 to £800

Electrical Connection

  • To be determined at site survey: Typically £500 to £1000

Landscaping (if required)

  • Our registered installer will be able to quote for any landscaping you might require. For example, you may want to extend the decking outwards to accommodate a table and chair, or you may require other works surrounding your garden building.