WEB1315/21
The development consists of the construction of a new attic conversion to include W.C along with alterations to the existing hipped roof forming a new gable wall with high level window to the side elevation, new flat roof dormer to the rear elevation at roof level. The development is to include internal alterations, landscaping and all ancillary site works and drainage.
Granted
Core Planning Reasoning
The Inspector recommended modifying a condition to allow a 4.3-metre wide dormer, concluding that while the original proposal was too large, the Council's 3.5-metre limit was overly restrictive for internal functionality; the revised width ensures the dormer remains subordinate to the roofscape while maintaining residential amenity.
Decision Maker's Conclusion
- The originally proposed 5.2m wide dormer is too dominant and fails to be visually subordinate to the roof slope as required by the Development Plan.
- Reducing the dormer to 3.5m as conditioned by the Planning Authority would compromise the internal headspace and workability of the attic stairs.
- A width of 4.3m is a justified compromise based on precedent decisions for similar suburban dwellings, balancing visual amenity with habitable room standards.
Cited Policies (CDP)
Zoning Objective Z1Section 16.2.2.3Section 16.10.12Appendix 17Appendix 17.11
Decision Document Summary
The application involves a proposed attic conversion at Oglebay House, Artane, which includes changing a hipped roof to a gable-ended roof and installing a large rear dormer window. Dublin City Council granted permission but included Condition 2(a), which restricted the dormer's width to 3.5 metres to comply with Appendix 17.11 of the Development Plan. The applicant appealed this specific condition, arguing it was unreasonable and would make the attic space unfeasible. The Inspector acknowledged...SOURCE PDFOpen Original
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