PPS 7 Addendum Residential Extensions and Alterations·Page 18·A33
Safeguarding sunlight and daylight to neighbouring properties
When designing extensions or alterations to residential properties, care must be taken to avoid casting shadows that reduce neighbours' access to daylight and sunlight to an unacceptable level.
Where an extension is poorly sited or badly designed it can cast a shadow that may reduce a neighbour's daylight and adversely affect their amenity to an unacceptable level. It is important, therefore, that every effort should be made to avoid or minimise the potential for overshadowing to a neighbour when drawing up plans for an extension. Overshadowing to a garden area on its own will rarely constitute sufficient grounds to justify a refusal of permission.
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