Core Refusal Reason
The proposed dormer extension is excessive in scale, bulk, and massing, resulting in a visually overbearing impact that is disproportionate to the existing dwelling.
Decision Maker's Conclusion
- The scale and massing of the extension are excessive relative to the existing roof profile and dwelling size, appearing visually overbearing.
- The proposal fails to meet the specific criteria for roof and attic alterations outlined in the Dún Laoghaire-Rathdown County Development Plan 2022–2028.
- The development would be injurious to the residential amenities of adjoining properties and would set an undesirable precedent for similar developments in the area.
Cited Policies (CDP)
Section 12.3.7.1 Extensions to Dwellings (iv) Alterations at Roof/Attic Level
Decision Document Summary
The proposal sought permission for a dormer roof extension to the side and rear of an existing dwelling at 2 Redesdale Court, Mount Merrion. The Planning Authority refused the application on the grounds that the extension's bulk and massing were disproportionate to the original structure, leading to a visually overbearing appearance. It was determined that the development contravened Section 12.3.7.1 of the County Development Plan, would negatively impact the character and amenities of the surro...SOURCE PDFOpen Original
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