Do you need planning permission for your new shed/Summerhouse?

The answer is most likely..  NO

Most sheds, garages, greenhouses or other similar buildings do not need a planning permission application, because most meet a set of rules called 'permitted development'.

The permitted development rules for sheds, garages, greenhouses or other similar buildings are:

• it's located at the back of the house
• it's not used as a separate home to live in
• it, and any other development, does not take up half or more of the ' rear curtilage' – this means half or more of the grounds behind your home
• it's not higher than 4 metres at the highest point
• any part that's a metre or less from the boundary is no higher than 2.5 metres
• the eaves (the part where the wall meets the roof) is no higher than 3 metres
• if the land is in a conservation area or in the grounds of a listed building, the building has a footprint of less than 4 square metres

Smaller buildings such as bike storage units have different permitted development rules:

• it's located at the front or the back of the house
• it's not higher than 1.5 metres
• it's not wider than 2.5 metres
• it's not deeper than 1.2 metres
• it's the only building on the grounds of your home that these permitted development rules apply to
• it does not block sight of a road or footpath for drivers
• it's not on the grounds of a World Heritage site
• it does not block light to another building