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50 years experience
Manufactured in Great Britain
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18 x 12 Summerhouses

Does your garden space feel empty? Do you find yourself not enjoying your outdoor space through lack of shade and shelter? Then take a peek at our fabulous 18 x 12 summer houses. These quality built wooden summer houses are the perfect addition to any garden, quite literally transforming any space by offering the perfect place to relax and unwind with seating, or even house that all-important outdoor bar.

Our wooden summer houses are made using the best materials available and treated with a specialist anti-rot treatment to allow it to withstand the elements, giving you the perfect place to enjoy your garden for years to come. Our 18 x 12 summer houses have become a particularly popular choice, offering a great amount of space without taking up too deep a footprint in your garden. For more information on our free delivery, 0% finance or of course, our professional assembly service, simply contact us today.

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  • Project Timber Evolution Apex Garden Room

    From £148.80 / month
    From£6,499
    Sizes
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    18 x 12
    14 x 12
    16 x 12
    20 x 12
    Free delivery from Mon 3 Jun*
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  • Project Timber Evolution Long Window Pent Garden Room

    From £119.36 / month
    From£5,213
    Sizes
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    18 x 12
    12 x 12
    14 x 12
    16 x 12
    20 x 12
    Free delivery from Mon 3 Jun*
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  • The Project Timber Evolution Insulated Garden Room

    From £68.66 / month
    From£2,999
    Sizes
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    18 x 12
    16 x 10
    8 x 6
    10 x 6
    12 x 6
    Free delivery from Mon 3 Jun*
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  • The Project Timber Evolution Insulated Garden Room with Partition Wall

    From £88.72 / month
    From£3,875
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    10 x 8
    12 x 8
    14 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • The Project Timber Evolution Offset Door Insulated Garden Room

    From £89.64 / month
    From£3,915
    Sizes
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    18 x 12
    16 x 10
    14 x 8
    16 x 8
    18 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • Pressure Treated Diplomat Grandmaster Long Window Summerhouse

    From £47.97 / month
    From£2,095
    Sizes
    Show All Sizes
    18 x 12
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    Free delivery from Mon 3 Jun*
    View Product

  • Pressure Treated Grandmaster Fusion With Partition Wall

    From £36.54 / month
    From£1,596
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    14 x 8
    16 x 8
    18 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • Pressure Treated Diplomat Grandmaster Summerhouse

    From £25.46 / month
    From£1,112
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    8 x 8
    10 x 8
    12 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • Pressure Treated Diplomat Offset Grandmaster Summerhouse

    From £25.46 / month
    From£1,112
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    8 x 8
    10 x 8
    12 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • Pressure Treated Grandmaster Clockhouse Garden Room

    From £25.46 / month
    From£1,112
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    8 x 8
    10 x 8
    12 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • Diplomat Grandmaster Summerhouse

    From £22.87 / month
    From£999
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    8 x 8
    10 x 8
    12 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • Diplomat Offset Grandmaster Summerhouse

    From £22.90 / month
    From£1,000
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    8 x 8
    10 x 8
    12 x 8
    Free delivery from Mon 3 Jun*
    View Product

  • Grandmaster Clockhouse Garden Room

    From £22.87 / month
    From£999
    Sizes
    Show All Sizes
    18 x 12
    16 x 10
    8 x 8
    10 x 8
    12 x 8
    Free delivery from Mon 3 Jun*
    View Product
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