Core Refusal Reason
The proposed side extension's scale, bulk, and siting would result in an overbearing impact on the original dwelling and create an undesirable risk of a terracing effect.
Decision Maker's Conclusion
- The extension's scale and bulk, specifically the increased eaves height and proximity to the boundary, would have a dominant and overbearing effect on the main house structure.
- The development increases the risk of a 'terracing' effect, which would set an undue local precedent and damage the character and amenities of the adjoining residential area.
- The proposal fails to comply with the specific design criteria for side extensions as outlined in the Dun Laoghaire-Rathdown County Development Plan 2022-2028.
Cited Policies (CDP)
Section 12.3.7.1(iii)
Decision Document Summary
The application proposed the removal of an existing chimney and garage at 112 Lower Kilmacud Road to facilitate a side extension. The planning authority refused permission because the proposed structure's height, massing, and lack of sufficient separation from the eastern party boundary were deemed excessive. It was concluded that the development would overwhelm the original house and contribute to a 'terracing' effect, thereby violating Section 12.3.7.1(iii) of the County Development Plan and n...SOURCE PDFOpen Original
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