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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Diplomat Grandmaster Long Window Summerhouse

From £54.19 / month

Total£1,951

Sizes

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18 x 12

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

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 23 Nov*

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Diplomat Offset Grandmaster Summerhouse

From £52.92 / month

Total£1,905

Sizes

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18 x 12

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

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 23 Nov*

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Diplomat Grandmaster Summerhouse

From £52.64 / month

Total£1,895

Sizes

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18 x 12

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

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 23 Nov*

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Grandmaster Clockhouse Garden Room

From £82.22 / month

Total£2,960

Sizes

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18 x 12

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

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 23 Nov*

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Pressure Treated Diplomat Offset Grandmaster Summerhouse

From £33.61 / month

Total£1,210

Sizes

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18 x 12

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

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 23 Nov*

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Pressure Treated Diplomat Grandmaster Summerhouse

From £38.50 / month

Total£1,386

Sizes

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18 x 12

8 x 8

10 x 8

12 x 8

16 x 8

8 x 10

10 x 10

12 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

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 23 Nov*

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Pressure Treated Grandmaster Clockhouse Garden Room

From £44.78 / month

Total£1,612

Sizes

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18 x 12

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

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 23 Nov*

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Pressure Treated Grandmaster Fusion With Partition Wall

From £142.14 / month

Total£5,117

Sizes

Show All Sizes

18 x 12

14 x 10

16 x 10

18 x 10

20 x 10

22 x 10

24 x 10

14 x 12

16 x 12

20 x 12

22 x 12

24 x 12

14 x 14

16 x 14

18 x 14

20 x 14

22 x 14

24 x 14

Free delivery from Fri 23 Nov*

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