Belonging to John Plumridge, the shed named 'Woodhenge' contains 500 ales and 150 ciders. It beat 2,000 other entries to win the contest, sponsored by Cuprinol.
When told he had won the prize, Plumridge admitted that he was "lost for words" and confessed to "having 'shed' a tear".
He said: "I've been working on Woodhenge for around four years now and have enjoyed every minute of it.
"I can't even hazard a guess at the cost involved, but it's a great venue for our family and friends to party in and the good thing is we haven't got too far to get home."
The winner of the 'Sheddies' is chosen by a panel of experts that includes property show presenter and expert Sarah Beeny.
Beeny commented: "Shed of the Year is a great inspiration and clearly encourages people to get creative with their sheds."
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