The most common and popular shed size is 8×6 (8ft x 6ft), which can generally come as an 8×6 apex shed or an 8×6 pent shed.
However, the is no ‘standard size’ – this would simply depend on what works for you in your garden and how much storage space you need.
When considering your purchase it is recommended to note the position of the door and to check which way round shed companies display their dimensions. An 8×6 at one shed company may be a 6×8 at another. So be sure to check when ordering which size is for which side and which side you require the door on.