Antrim and Newtownabbey·LDP 2030 Plan Strategy (adopted 2025)·Page 333·B33
Overshadowing - Minimising Shadow Impact
Poorly sited or badly designed extensions can cast shadows reducing a neighbour's daylight and adversely affecting amenity. Overshadowing to garden areas alone will rarely justify refusal of permission, but efforts must be made to minimise potential shadow impact when drawing up extension plans.
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.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/antrim-newtownabbey/LDP 2030 Plan Strategy (adopted 2025).pdf