Core Planning Reasoning
The development is considered consistent with the residential zoning objective (Objective A) of the Dún Laoghaire Rathdown County Development Plan 2022-2028, as the extensions are proportionate to the house and site and do not negatively impact visual or residential amenities.
Decision Maker's Conclusion
- The proposed dormer extension is proportionate to the rear roof plane and should not be restricted in width to 4.5m as previously conditioned by the Planning Authority.
- A prescriptive condition requiring the dormer to be set down at least 100mm from the roof ridge is necessary for clarity and to ensure the extension does not read as a third storey.
- The use of frosted glass in the dormer window openings is sufficient to prevent excessive overlooking of the adjacent properties and protect residential privacy.
Cited Policies (CDP)
Section 8.2.3.4(i)Section 12.3.7Objective ASection 8.2.3.4
Decision Document Summary
This report concerns a first and third-party appeal for a single-storey side/rear extension and an attic conversion with a rear flat-roof dormer at No. 1 Fosterbrook, Blackrock. The site is a detached dwelling in a semi-detached estate, zoned for the protection of residential amenity. The Planning Authority had granted permission but included a condition (Condition 2) significantly restricting the width of the dormer to 4.5m. The Inspector argued that the originally proposed width (approx. 5.2m)...SOURCE PDFOpen Original
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