SD23B/0125

The proposed development will consist of retention of as built modifications to the previously permitted dwelling accesses from Waterstown Avenue (D20W974) involving an additional 20sqm at ground floor (increased from 108sqm to 128sqm), revisions to site boundary wall on Waterstown Avenue, revised garden layout and all associated site and development works associated with above.

Split decision

Core Reason for the Refused Part

The Inspector recommended granting retention permission because the as-built modifications and 20sqm extension do not constitute overdevelopment, provide sufficient private amenity space, and do not negatively impact visual or residential amenities. Concerns regarding traffic hazard were mitigated by requiring the reduction of the boundary wall height through a condition to ensure adequate pedestrian visibility.

Decision Maker's Conclusion

  • The retention of the 20sqm kitchen and utility extension does not result in overdevelopment, as the dwelling continues to meet or exceed minimum private open space standards required under the County Development Plan.
  • The single-storey side annex is modest in scale, largely concealed by the site's boundary wall, and does not present as an unduly obtrusive or overbearing structure in the context of the streetscape.
  • While the as-built boundary wall presented potential traffic safety issues, these can be successfully addressed by conditioning the reduction of the wall height to 0.9m at the entrance to ensure adequate pedestrian forward visibility.

Cited Policies (CDP)

Table 12.1Zoning Map 2Objective RESSection 6.8.2 Residential ExtensionsPolicy H14: Residential ExtensionsH14 Objective 1South Dublin County Council House Extension Design Guide, 2010Section 12.6.7 Residential StandardsTable 12.20: Minimum Standards for HousingPolicy H17Section 13.5.8 'Residential Consolidation'

Decision Document Summary

The application seeks retention permission for as-built modifications to a recently developed infill house on a corner site in Palmerstown, Dublin 20. Key changes include a 20sqm ground floor extension for a kitchen/utility room and revisions to the western boundary wall. The Planning Authority had issued a split decision, refusing these elements due to non-compliance with previous planning conditions and concerns that the wall height created a traffic hazard. The Inspector's assessment found th...
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