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Garden room planning permission guide

Garden rooms often don’t require planning permission, but it is important that you check before you buy. This guide looks at the basic planning regulations for garden buildings.

rubber stampEven if your garden room is at the bottom of your garden it’s important that you check with your local planning office as to whether you need to apply for planning permission. It’s no good relying on your garden room supplier to tell you if permission is or isn’t needed, as at the end of the day it is your responsibility as the householder. In the worst cases the planning office can make you take down a building that is breeching planning rules.

However planning permission is generally not as daunting as it sounds!

You will need planning permission if:-

  • You live in the curtilage of a listed building.
  • The building is to be located on land in front of the principle elevation of the main house i.e. the building is to be situated between the front elevation and the highway.
  • The building is to be more than single story with an eaves height of more than 2.5 meters.
  • The building has a single pitched roof higher than 3 meters.
  • The building has a double pitched roof e.g. a gable roof higher than 4 meters
  • The building has a raised platform such as a balcony, veranda or platform.
  • More than half the land around the ‘original house’* is covered in outbuildings.
  • The building is higher than 2.5 meters and situated within 2 meters of the boundary.
  • Has a volume over 10 cubic meters.
  • You live in an area of Outstanding Natural Beauty, The Broads, National Parks or World Heritage Site the maximum area that can be covered by buildings, containers, enclosures or pools more than 20 meters from the house is limited to 10 square meters.

You generally won’t need planning permission if:-

  • You don’t live in the curtilage of a listed building.
  • You don’t live in an area of Outstanding Natural Beauty, The Broads, National Parks or World Heritage Site.
  • The building is not located on land in front of the principle elevation of the main house i.e. the building isn’t situated between the front elevation of the house and the highway.
  • The building is only single storey with a maximum eaves height of 2.5 meters.
  • The building has a single pitched roof lower than 3 meters.
  • The building has a double pitched roof e.g. a gable roof lower than 4 meters.
  • If the building doesn’t have a raised platform such as balcony, veranda or platform.
  • Less than half the land around the main house is covered in outbuildings.
  • The building is less than 2.5 meters high if situated within 2 meters of the boundary.
  • Has a volume less than 10 cubic meters.

*Original house means the house as it was originally built before any extensions were added or as it stood before 1 July 1948.

Building Regulations

You don’t need to apply for Building Regulations if the building floor area is less than 15 meters square.

If the building is between 15 and 30 square meters you don’t need Building Regulations if the building is at least 1 meter from the boundary or is constructed from non combustible materials.

In both cases Building Regulations only apply if the building contains sleeping accommodation.

For more information visit the governments planning portal

For tips on choosing the location of your garden room click here.

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Visit the Garden Spaces websiteVisit the eDEN Garden Rooms websiteVisit the Gembuild website for garden offices & studiosFind out more about Green Studios Visit the Booths Garden Studios websiteVisit the Timeless Garden Rooms website Visit the Smart Garden Offices websiteVisit the Hideouts websiteVisit the ModBox Spaces websiteVisit the My Eco Space websiteSee what a garden room will look like in your garden

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