Core Refusal Reason
The proposed dormer extension is refused due to its excessive scale and inappropriate siting, which would result in a visually discordant feature within the streetscape and conflict with established design guidelines.
Decision Maker's Conclusion
- The scale and siting of the proposed dormer fail to comply with the specific design standards for extensions set out in BFP5 and BFP1 of the 2025 SDCC House Extension Design Guide.
- The development would be visually discordant within the existing streetscape and would negatively impact the residential amenities of neighboring properties.
- Granting permission would establish an undesirable precedent for similar developments that would cumulatively degrade the character of the area and contravene the 'RES' zoning objective.
Cited Policies (CDP)
BFP5BFP1RES zoning objective
Decision Document Summary
This application sought modifications to a previously granted permission (SD25B/0061W) for a dormer extension at 15 Knocklyon Park, Templeogue. The planning authority refused the proposal because the dormer's dimensions and positioning do not align with the 2025 SDCC House Extension Design Guide. The decision highlights that the structure would be visually intrusive to both the streetscape and adjacent dwellings, and that such a development would set a negative precedent for the 'RES' zoned resi...SOURCE PDFOpen Original
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