WEB1838/22

(1) erection of a single storey side extension at ground level incorporating a flat roof light, (2) construction of a dormer window to the rear elevation taking in the existing roof space at first floor level and incorporating a flat roof light and 3 windows to form a new room and bathroom, and (3) all associated site works.

Granted

Core Planning Reasoning

The Inspector recommended a grant of permission by amending a restrictive condition, concluding that a 6m wide dormer with asymmetrical placement is visually subordinate, consistent with the pattern of development in the area, and does not negatively impact the character of the residential conservation area or the amenities of adjoining properties.

Decision Maker's Conclusion

  • The proposed 6m width for the rear dormer is more reasonable than the 5m required by the Planning Authority, as it maintains a subordinate appearance relative to the roof slope while meeting the applicant's internal needs.
  • The asymmetrical placement of the dormer 1.8m eastwards is acceptable as it allows the retention of the existing staircase and does not result in significant adverse visual impacts on the streetscape or the integrity of the host dwelling.
  • The development complies with the Dublin City Development Plan 2022-2028 and will not lead to undue residential amenity issues such as overshadowing or loss of privacy for neighboring properties.

Cited Policies (CDP)

Zoning Z2 (Residential Neighbourhoods (Conservation Areas))Section 14.7.2 (Conservation Areas)Chapter 11 (Built Heritage)Chapter 15 (Development Standards)Appendix 18, Section 1.1 (Residential Extensions)Appendix 18, Section 1.5 (Separation Distances)Appendix 18, Section 1.7 (Scale and Harmony)Appendix 18, Section 4.0 (Alterations at Roof Level)Appendix 18, Section 5.1 (Additional Floor Levels)

Decision Document Summary

The application relates to a single-storey side extension and a rear dormer window at a semi-detached house in Killester, Dublin 5. The site is located within a 'Z2' Residential Conservation Area. While Dublin City Council granted permission, they attached Condition 3 requiring the dormer to be reduced to 5m in width and centered on the roof. The first-party appeal argued that a 6m width was necessary for functionality and that asymmetrical placement was required to align with the existing inter...
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