Core Refusal Reason
The proposed dormer extensions are excessive in scale and massing, failing to remain subordinate to the original roof and negatively impacting the visual character and symmetry of the area.
Decision Maker's Conclusion
- The cumulative scale, length, and bulk of the dormers would fail to be subordinate to the existing roof, appearing instead as an additional storey.
- The development would result in a visually intrusive addition that disrupts the established symmetry of the semi-detached pair and the character of the roofscape.
- The proposal contravenes specific standards of the Dún Laoghaire-Rathdown County Development Plan 2022-2028 and would set an undesirable precedent for the area.
Cited Policies (CDP)
Section 12.3.7.1 Extensions to Dwellings (iv) Alterations at Roof/Attic Level
Decision Document Summary
The proposal involved the construction of three flat-roofed dormer windows on the side roof slopes of a semi-detached dwelling at 12 Atkinson Drive, Belmont. The planning authority refused permission because the combined scale and massing of the dormers were considered excessive, creating an incongruous appearance that would read as an additional floor rather than a subordinate extension. The development was deemed to negatively impact the architectural symmetry of the building pair and the surr...SOURCE PDFOpen Original
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