3642/22

Planning permission for the development will consist of the addition of a dormer roof extension to the existing dwelling, at first floor level, to the rear and side of the existing main pitched roof structure, with habitable accommodation within and a new window to the side at first floor level. Also, the addition of 2 no. dormer windows at the front plane of the main roof.

Refused

Core Refusal Reason

The proposed dormer is overscaled and visually incongruous within a Z2 residential conservation area, failing to remain subordinate to the existing roof form and setting a negative precedent.

Decision Maker's Conclusion

  • The development's scale and design are incongruous with the streetscape and would negatively impact the visual amenity of the Z2 residential conservation area.
  • The rear dormer is excessively large, acting as an effective first floor rather than a subordinate roof element, which violates specific design guidelines.
  • Granting permission would establish an undesirable precedent for unsympathetic and overscaled developments, contrary to the Dublin City Development Plan and proper planning.

Cited Policies (CDP)

Section 16.10.12Appendix 17.11Z2 zoning objective

Decision Document Summary

This application sought planning permission for a dormer extension at 12 Middle Third, Killester, a property situated within a Z2 residential conservation area. Dublin City Council refused the proposal primarily because the dormer's scale and design were deemed visually dominant and unsympathetic to the character of the conservation area. The planning authority concluded that the structure would not be subordinate to the original roof, would injure the residential amenities of the vicinity, and ...
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