Cube Garden Room

A versatile space

With its simple and clean design, this classic cedar garden room works with any outdoor environment. Fully customisable, including its size which can be built to fit your own outdoor space, the Cube is the perfect solution for a variety of uses. From an additional space to relax with the family to a home gym, the possibilities of the Cube are endless. Get inspired here.


See the Cube come to life

The Cube is a classic garden room with redwood cedar cladding that you can use all year round for anything you like. We built a bespoke garden room for a client using the Cube design as inspiration, to create a modern living space/chill out room in one.

Your room. Your way.

The Cube is our more minimalistic garden room, but it’s potential is incredible. It’s sleek design makes the cube the perfect base to customise and create a bespoke garden room that works for you and your space. From the inclusion of decking, to upgrading your French doors or even adding coloured composite cladding on the exterior; there’s so much you can do to customise your garden room.

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Standard features

The Cube garden room comes complete with a range of high quality, standard features.

  • Structure
    • High performance, fully installed ground screw foundations with 25-year guarantee on galvanising
    • EPDM rubber roof with a 50-year life expectancy
  • Insulation
    • Plastered walls and ceilings
    • Fully insulated with 100mm PIR foil faced board and 100mm Earthwool
    • All Garden rooms are wrapped in top quality windtight, water-resistant breather membrane
  • Electrical
    • Exterior up/down lights
    • Portable oil filled heater with timer
    • Full electrics that include 4 double sockets, interior panel lights and a 2-way consumer unit – site hook up is quoted separately
  • Doors & Windows
    • 1500mm anthracite UPVC French doors with A rated glass
  • Finishes & Trims
    • Tanalised redwood cladding
    • Finished in white matt emulsion
  • Flooring
    • Laminate floor in a colour and style of your choosing

Customisable features

Our optional extras are specially selected to help bring your project to life and make your garden room bespoke to you.

  • Base
    • Resin plate system for concrete slabs
  • Insulation
    • Upgrade for more acoustic sound insulation in walls and ceilings – perfect for music rooms, cinemas or office privacy
  • Electrical
    • Extra lighting and socket options
    • USB sockets
    • Downlighters
    • Exterior motion sensor
    • Cat 6 ethernet cable
  • Doors, Windows & Glazing
    • UPVC anthracite French doors in multiple sizes
    • UPVC anthracite Slide doors in multiple sizes
    • Aluminium anthracite or black French doors in multiple sizes
    • Aluminium anthracite or black Slide doors in multiple sizes
    • Aluminium anthracite or black Bifold doors
    • Selections of different styles and sizes to suit building
    • All seasons thermally efficient solar glass
    • Integrated blinds (within glass)
  • Cladding
    • Thermowood
    • Larch
    • Cedar
    • Composite cladding in a choice of colours
  • Flooring & Decking
    • Vinyl-click
    • Engineered wood floor
    • Anthracite composite decking

Fully customisable

Our commitment to building garden rooms that are bespoke to your needs is what sets us apart from our rivals. Everything from flooring to fascias, through to size and shape is fully customisable.


Any space. Any size.

The Custom Garden Rooms team are always up for a challenge. We use our years of industry experience and knowledge to create your perfect garden room in any space, and to fit any size.


Complies with permitted development rights

Garden rooms are not ‘habitable’ spaces, i.e., you aren’t living in one, so they do not require planning permission. This makes the project timelines for garden rooms infinitely quicker than annexes.


Do you have a question?

  • Do I need to get planning permission for a garden room?

    In most cases, our standard garden room buildings (up to 30sq metres) do not require planning permission as they are built to comply with permitted development rights. However, rooms that are ‘habitable’ such as bedrooms, do require planning permission and building regulations.

  • How long does it take to install a garden room?

    Typically between 7-10 working days, depending on the specification.

  • What type of base do you install?

    All our garden rooms come with ground screws, all professionally fitted and guaranteed.

  • Are electrics included?

    We included all electrics in our garden rooms. Hooking the electrics to the main property is an optional extra which can be quoted for prior to the project start date.

  • What are the most popular upgrades?

    We offer a wide range of extras, but our most popular ones are:

    • Additional insulation
    • Choice in cladding (cedar, larch and composite are popular choices)
    • Luxury vinyl click floor
    • Bifold or sliding doors
  • What comes as standard on a garden room?
    • Epdm rubber roof with a 50-year life expectancy
    • Groundscrew base
    • Tanalised redwood cladding
    • 1500mm PVC French doors
    • 100mm rockwool insulation in ceiling and walls
    • 100mm PIR board insulation in floor
    • Full electrics
    • Heater
    • Painted and plastered finish
    • Laminate floor
See all our FAQS

Get started

Your project starts here. Punch in your estimated measurements below, then move on to the next steps.

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Need inspiration?

We have a complete gallery of beautiful, custom garden rooms and annexes that we’ve created over the years. Why not take a look and get some fresh inspiration for your very own bespoke garden living space?