Symmetry Garden Room

Perfectly balanced

The Symmetry garden room is perfectly enclosed by projecting fascias on both the sides and its roof. This alcove-like garden room is versatile and can be customised to suit your unique outdoor space and any intended use.

The Symmetry design, like all our garden room models, is easy and cost-effective to maintain and can be enjoyed all year round. So, whether you want your bespoke garden room to be a snug for the winter that doubles as a chill-out room in the summer, or a year-round office/gym, you can turn the Symmetry into anything you’d like.

Symmetry Garden Room

See the Symmetry garden room come to life

Making the most of a beautiful view facing out into the countryside, we have recently created a serene home-office space using the Symmetry style. Want to move your working day to a rejuvenating and dedicated office environment? Get inspired now.

Your room. Your way.

The Symmetry garden room comes with a high quality, standard specification including full electrics and insulation. Our experienced team can also help you transform the interior of your outdoor living room at an extra cost, and we also offer an additional decking service that you can add to your garden room, including the Symmetry.


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Standard features

The Symmetry 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 seperately
  • Windows & Doors
    • 1500mm anthracite UPVC French doors with A rated glass
  • Finishes and trims
    • Tanalised redwood cladding
    • Finished in white matt emulsion
  • Flooring
    • Laminate floor in a colour and style of your choosing

Optional extras

Our optional extras are specially selected to help bring your project to life and make your garden room tailor-made for 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
  • Windows & Doors
    • 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.


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

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  • - Minimum 2m x 2m
  • - Best for offices
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  • - Seamless design
  • - Minimum 2m x 2m
  • - Best for a seamless look
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Symmetry Garden Room


  • - Perfectly balanced
  • - Minimum 2m x 2m
  • - Best for uniform-styled designs
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Tetra Garden Room


  • - Dual aspect
  • - Minimum 2m x 2m
  • - Best for making the most of light
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  • - Designed with character
  • - Minimum 2m x 2m
  • - Best for adding character
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  • - A versatile space
  • - Minimum 5m x 3m
  • - Best for dedicated, long spaces
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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?