Garden Buildings are considered Permitted Development and do NOT require planning permission as long as. Overall your shed cannot exceed 4 metres in height for a dual pitched apex roof is present or 3 metres with any other type of roof pent flat roof. Planning Permission Building Regulations For Outbuildings Garden Studios Garden Offices Garden Rooms Garde Granny Annexe Planning Permission Garden Studio If youre wondering how tall can a shed be without planning permission then the answer depends on what height youre measuring. What height can you build a shed without planning permission . Do I need planning permission for a shed in my front garden. To stay clear of planning consent sheds need to be single-storey with a maximum eaves height of 25 m for flat roofs 4m for twin angled roofs or 3m in any other case. No verandas balconies or raised platforms a platform must not exceed 03 metres in height. Maximum height of 25 metres in the case of a building enclosure or contain...