10–20 sqm Garden Room Examples

You’ve told us you’re considering a medium-sized garden room (typically around 10–20 sqm), so we’ve gathered examples of medium-sized garden room buildings we’ve featured over the years.

At this size, there’s often more freedom in how the space is planned. These examples are intended to help you explore:

  • Different layout approaches and zoning ideas
  • How the building sits within the garden as a feature in its own right
  • Material palettes and detailing
  • Door and window layouts that influence light, views, and flow

Not every company featured will work in your area, but many readers find this page helpful for understanding what’s achievable within this size range.

You’ll also see clearer distinctions between:

  • Pre-designed ranges, offering a faster route with structured options
  • Fully bespoke designs, where layout, proportions, and detailing are fully tailored
The school office was completed by Executive Garden Rooms on a turnkey basis

School Office Building by Executive Garden Rooms

6m x 3m insulated garden cabin by Rustic Realities

Insulated Garden Cabin by Rustic Realities

A corner configuration of floor to ceiling glazing has been paired with a skylight window

Medium-Sized Art Studio by JML Garden Rooms

The multi-function garden room is finished with maintenance free finishes so will maintain its appearance in the long term

Better Than an Extension: A Multi-Functional Garden Room

Burnt Cedar Cladding using the Shou Sugi Ban technique

Burnt Cedar Clad Garden Room

The garden room blends into the garden setting

Pent Roof Garden Office & Gym Building

The security office has been designed so that it has good views of the entrances and plenty of room inside for multiple monitors

Bespoke Security Office Showcases Garden Spaces’ Versatility

The treatment rooms have a clean and professional look

Garden Therapy Suite Designed for Holistic Practice

The Timber Rooms team prepared the base for the hot tub as part of their project

Riverside Garden Office Designed for Two Ways of Working

The crisp lines of the Lowlander pair well with the traditional style of the house

Lowlander Garden Room in a Conservation Area Setting

A decked entrance step was added to overcome the sloping ground

Art Studio Garden Room in Rochdale

The timber finishes paired with the graphite grey finishes offers a sharp contrast

Green Retreats G3 Garden Room – A Crisp, Contemporary Space

..