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50 years experience
Manufactured in Great Britain
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12 x 12 Summerhouses

Here at Project Timber, we pride ourselves on offering a wide range of wooden garden buildings from traditional garden sheds to our fantastic range of contemporary summer houses. If you’re on the lookout for a summer house, our 12×12 summer house could be just what you need. Made from the very finest materials, using only the best craftsmanship, our summer houses are guaranteed to withstand the elements throughout the year, leaving you with a quality summer house to enjoy at any time. All of our summer houses come with a 10 year anti-rot guarantee which means you can count on Project Timber for the best garden investment you’ll ever make.

With 50 years within the industry, we know garden buildings and we know exactly what our clients want which is why we also provide a 30 day returns policy as well as a professional assembly service to boot. Want to find out more? Then simply contact us today.

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  • 12ft x 10ft Diplomat long Window

    Diplomat Grandmaster Long Window Summerhouse

    From £45.69 / month
    Total£1,645
    Sizes
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    8 x 10
    10 x 10
    12 x 10
    14 x 10
    16 x 10
    18 x 10
    20 x 10
    22 x 10
    24 x 10
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    16 x 12
    18 x 12
    20 x 12
    22 x 12
    24 x 12
    Free delivery from Tue 23 Oct*
    From 8 x 10 to 24 x 12
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  • Diplomat Offset Grandmaster Summerhouse

    Diplomat Offset Grandmaster Summerhouse

    From £52.92 / month
    Total£1,905
    Sizes
    Show All Sizes
    8 x 8
    10 x 8
    12 x 8
    14 x 8
    16 x 8
    18 x 8
    20 x 8
    22 x 8
    24 x 8
    8 x 10
    10 x 10
    12 x 10
    14 x 10
    16 x 10
    18 x 10
    20 x 10
    22 x 10
    24 x 10
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    16 x 12
    18 x 12
    20 x 12
    22 x 12
    24 x 12
    10 x 14
    12 x 14
    14 x 14
    16 x 14
    18 x 14
    20 x 14
    22 x 14
    24 x 14
    Free delivery from Fri 19 Oct*
    From 8 x 8 to 24 x 14
    View Product
  • Diplomat Grandmaster Summerhouse

    Diplomat Grandmaster Summerhouse

    From £52.64 / month
    Total£1,895
    Sizes
    Show All Sizes
    8 x 8
    10 x 8
    12 x 8
    14 x 8
    16 x 8
    18 x 8
    20 x 8
    22 x 8
    24 x 8
    8 x 10
    10 x 10
    12 x 10
    14 x 10
    16 x 10
    18 x 10
    20 x 10
    22 x 10
    24 x 10
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    16 x 12
    18 x 12
    20 x 12
    22 x 12
    24 x 12
    8 x 14
    10 x 14
    12 x 14
    14 x 14
    16 x 14
    18 x 14
    20 x 14
    22 x 14
    24 x 14
    Free delivery from Fri 19 Oct*
    From 8 x 8 to 24 x 14
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  • Diplomat Grandmaster Summerhouse With Dorma

    Diplomat Grandmaster Summerhouse With Dorma

    From £82.22 / month
    Total£2,960
    Sizes
    Show All Sizes
    8 x 8
    10 x 8
    12 x 8
    14 x 8
    16 x 8
    18 x 8
    20 x 8
    22 x 8
    24 x 8
    8 x 10
    10 x 10
    12 x 10
    14 x 10
    16 x 10
    18 x 10
    20 x 10
    22 x 10
    24 x 10
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    16 x 12
    18 x 12
    20 x 12
    22 x 12
    24 x 12
    8 x 14
    10 x 14
    12 x 14
    14 x 14
    16 x 14
    18 x 14
    20 x 14
    22 x 14
    24 x 14
    Free delivery from Fri 19 Oct*
    From 8 x 8 to 24 x 14
    View Product
  • Grandmaster Duke Summerhouse TG Roof and Floor

    Duke Grandmaster Summerhouse

    From £52.19 / month
    Total£1,879
    Sizes
    Show All Sizes
    8 x 8
    10 x 8
    12 x 8
    16 x 8
    20 x 8
    8 x 10
    10 x 10
    12 x 10
    16 x 10
    20 x 10
    12 x 12
    16 x 12
    20 x 12
    Free delivery from Fri 19 Oct*
    From 8 x 8 to 20 x 12
    View Product
  • Pressure Treated Diplomat Offset Grandmaster Summerhouse

    Pressure Treated Diplomat Offset Grandmaster Summerhouse

    From £33.61 / month
    Total£1,210
    Sizes
    Show All Sizes
    8 x 8
    10 x 8
    12 x 8
    14 x 8
    16 x 8
    18 x 8
    20 x 8
    22 x 8
    24 x 8
    8 x 10
    10 x 10
    12 x 10
    14 x 10
    16 x 10
    18 x 10
    20 x 10
    22 x 10
    24 x 10
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    16 x 12
    18 x 12
    20 x 12
    22 x 12
    24 x 12
    10 x 14
    12 x 14
    14 x 14
    16 x 14
    18 x 14
    20 x 14
    22 x 14
    24 x 14
    Free delivery from Fri 19 Oct*
    From 8 x 8 to 24 x 14
    View Product
  • Pressure Treated Diplomat Grandmaster Summerhouse

    Pressure Treated Diplomat Grandmaster Summerhouse

    From £38.50 / month
    Total£1,386
    Sizes
    Show All Sizes
    8 x 8
    10 x 8
    12 x 8
    14 x 8
    16 x 8
    18 x 8
    20 x 8
    22 x 8
    24 x 8
    8 x 10
    10 x 10
    12 x 10
    14 x 10
    16 x 10
    18 x 10
    20 x 10
    22 x 10
    24 x 10
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    16 x 12
    18 x 12
    20 x 12
    22 x 12
    24 x 12
    8 x 14
    10 x 14
    12 x 14
    14 x 14
    16 x 14
    18 x 14
    20 x 14
    22 x 14
    24 x 14
    Free delivery from Fri 19 Oct*
    From 8 x 8 to 24 x 14
    View Product
  • Pressure Treated Diplomat Grandmaster Summerhouse With Dorma

    Pressure Treated Diplomat Grandmaster Summerhouse With Dorma

    From £44.78 / month
    Total£1,612
    Sizes
    Show All Sizes
    8 x 8
    10 x 8
    12 x 8
    14 x 8
    16 x 8
    18 x 8
    20 x 8
    22 x 8
    24 x 8
    8 x 10
    10 x 10
    12 x 10
    14 x 10
    16 x 10
    18 x 10
    20 x 10
    22 x 10
    24 x 10
    8 x 12
    10 x 12
    12 x 12
    14 x 12
    16 x 12
    18 x 12
    20 x 12
    22 x 12
    24 x 12
    8 x 14
    10 x 14
    12 x 14
    14 x 14
    16 x 14
    18 x 14
    20 x 14
    22 x 14
    24 x 14
    Free delivery from Fri 19 Oct*
    From 8 x 8 to 24 x 14
    View Product
  • Pressure Treated Duke Grandmaster Summerhouse

    Pressure Treated Duke Grandmaster Summerhouse

    From £44.69 / month
    Total£1,609
    Sizes
    Show All Sizes
    10 x 8
    12 x 8
    16 x 8
    8 x 10
    10 x 10
    12 x 10
    16 x 10
    20 x 10
    12 x 12
    16 x 12
    20 x 12
    Free delivery from Fri 19 Oct*
    From 10 x 8 to 20 x 12
    View Product
  • diplomat-new day scene-a

    Diplomat Grandmaster Insulated Garden Room

    From £156.78 / month
    Total£5,644
    Sizes
    Show All Sizes
    12 x 8
    16 x 8
    20 x 8
    12 x 10
    16 x 10
    20 x 10
    12 x 12
    16 x 12
    20 x 12
    Free delivery from Fri 19 Oct*
    From 12 x 8 to 20 x 12
    View Product
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