If you need extra space for working from home, you may have considered a garden room. Here's what you need to know about planning permission for one. 

outside working space - what planning permission do i need for a garden room? - home improvements - granddesignsmagazine.com

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Before going ahead with a garden room or outbuilding to gain extra space, consider the permissions you might need. The Grand Designs magazine team spoke to Nadine Brown-Williams, planning manager at Resi who advises on planning permission for garden rooms.

Permitted development

Gaining planning permission for garden rooms, providing the designs are in keeping with what is already there, is one the easiest applications to deal with. However, they are usually considered as permitted development and do not require planning permission, providing they meet the certain requirements.

Read more: 5 inspiring garden office builds for working from home

They should be less than two metres from the boundary of the property and a maximum overall height of no more than 2.5 metres at the eaves from the existing ground-floor level, a height of no more than four metres with dual pitch roof or a maximum of three metres for other roofs. Plus, they can’t include verandas, balconies or raised platforms. Other rules apply, so for more information see the Planning Portal.

grey garden room -  what planning permission do i need for a garden room? - home improvements - granddesignsmagazine.com

Image: Ashton Porter 

Planning permission

Planning permission is required though for flats, maisonettes, listed buildings and converted houses and areas where there may be a planning condition or another restriction. If you require planning permission, the following points will be taken into consideration:

● The impact of the amenity on neighbouring occupants.

● A loss of privacy: if the garden room is overlooking someone else’s garden, this might be considered harmful.

● Sunlight: if the outbuilding exceeds the height as outlined, then this would be an issue.

● Sense of enclosure: does the height, depth and width fall into the parameters above?

● Good design and heritage: its design should appear ancillary to the existing building, respecting the character of the property in terms of window styles, roof, local distinctiveness and the street scene, for example.

● Gardens with a number of trees may be protected under a Tree Protection Order.

     

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