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01636 370600
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Free delivery
on selected postcodes
0% interest finance
50 years experience
Manufactured in Great Britain
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16 x 12 Summerhouses

Welcome to Project Timber, home of the best quality wooden garden buildings in the UK. Having acquired over 50 years within the industry, here at Project Timber, we’re confident in saying we know exactly what our customers want and that’s precisely what we provide. Our 16 x 12 summer house is no exception to the rule, proving to be hugely popular, offering fantastic interior space to fill as you wish, from seating to bar areas, our summer houses don’t disappoint. With Project Timber, you can guarantee quality every step of the way with a minimum 10 year anti-rot guarantee as well as a 30 day returns policy, allowing you to purchase with peace of mind.

We use only the finest material and the best craftsmanship available, making our summer houses one of the best investments for your outdoor space. For more information on our quality 16 x 12 summer houses, simply contact our friendly team today whom you’ll find only too happy to help you with any and all of your queries.

Showing all 13 results

  • 20ft x 10ft diplomat long window grandmaster summerhouse shed

    Diplomat Grandmaster Long Window Summerhouse

    From £38.69 12.9% per month
    Total£1,393
    Sizes
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 10 to 24 x 12
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Alpine Grandmaster Long Window Summerhouse

    Alpine Grandmaster Long Window Summerhouse Cabin

    From £53.19 12.9% per month
    Total£1,915
    Sizes
    16 x 9
    20 x 9
    16 x 12
    20 x 12
    16 x 14
    20 x 14
    16 x 16
    20 x 16
    Show More Sizes
    Free delivery from Friday 28 September*
    From 16 x 9 to 20 x 16
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Diplomat Offset Grandmaster Summerhouse

    Diplomat Offset Grandmaster Summerhouse

    From £52.92 12.9% per month
    Total£1,905
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 8 to 24 x 14
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Diplomat Grandmaster Summerhouse

    Diplomat Grandmaster Summerhouse

    From £52.64 12.9% per month
    Total£1,895
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 8 to 24 x 14
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Alpine Grandmaster Summerhouse

    Alpine Grandmaster Summerhouse Cabin

    From £59.17 12.9% per month
    Total£2,130
    Sizes
    16 x 9
    20 x 9
    16 x 12
    20 x 12
    16 x 14
    20 x 14
    16 x 16
    20 x 16
    Show More Sizes
    Free delivery from Friday 28 September*
    From 16 x 9 to 20 x 16
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Diplomat Grandmaster Summerhouse With Dorma

    Diplomat Grandmaster Summerhouse With Dorma

    From £82.22 12.9% per month
    Total£2,960
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 8 to 24 x 14
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Grandmaster Duke Summerhouse TG Roof and Floor

    Duke Grandmaster Summerhouse

    From £52.19 12.9% per month
    Total£1,879
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 8 to 20 x 12
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Pressure Treated Diplomat Offset Grandmaster Summerhouse

    Pressure Treated Diplomat Offset Grandmaster Summerhouse

    From £33.61 12.9% per month
    Total£1,210
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 8 to 24 x 14
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    15 year anti rot guarantee
    Fully opening windows
    View Product
  • Pressure Treated Alpine Grandmaster Summerhouse

    Pressure Treated Alpine Grandmaster Summerhouse Cabin

    From £87.78 12.9% per month
    Total£3,160
    Sizes
    16 x 9
    20 x 9
    16 x 12
    20 x 12
    16 x 14
    20 x 14
    16 x 16
    20 x 16
    Show More Sizes
    Free delivery from Friday 28 September*
    From 16 x 9 to 20 x 16
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    15 year anti rot guarantee
    Fully opening windows
    View Product
  • Pressure Treated Diplomat Grandmaster Summerhouse

    Pressure Treated Diplomat Grandmaster Summerhouse

    From £38.50 12.9% per month
    Total£1,386
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 8 to 24 x 14
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    15 year anti rot guarantee
    Fully opening windows
    View Product
  • Pressure Treated Diplomat Grandmaster Summerhouse With Dorma

    Pressure Treated Diplomat Grandmaster Summerhouse With Dorma

    From £44.78 12.9% per month
    Total£1,612
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 8 x 8 to 24 x 14
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    View Product
  • Pressure Treated Duke Grandmaster Summerhouse

    Pressure Treated Duke Grandmaster Summerhouse

    From £44.69 12.9% per month
    Total£1,609
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 10 x 8 to 20 x 12
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    15 year anti rot guarantee
    Fully opening windows
    View Product
  • diplomat-new day scene-a

    Diplomat Grandmaster Insulated Garden Room

    From £156.78 12.9% per month
    Total£5,644
    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
    Show More Sizes
    Free delivery from Friday 28 September*
    From 12 x 8 to 20 x 12
    Mortice lock and lockable windows
    Extra tall inside
    Stronger and taller double doors
    16mm cladding upgrade
    10 year anti rot guarantee
    Fully opening windows
    Fully insulated
    View Product
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