SD24B/0294

Proposed Build-up of Existing Hip in roof to side of roof into Dutch hip at Attic level, with window in proposed gable wall, dormer roof window on rear slope of roof & 1no. Velux roof light om front slope of roof all at attic level. Proposed attic conversion. Proposed first floor internal Alterations. Proposed ground floor rear extension with pitched roof over for use as family flat with floor area 30m sq.

Split decision

Core Reason for the Refused Part

The proposed ground floor rear extension (family flat) constitutes overdevelopment that would negatively impact neighboring residential amenity through overshadowing and overbearing massing, while failing to meet minimum standards for residential quality.

Decision Maker's Conclusion

  • The scale, mass, and height of the rear extension along the common boundary would create an unacceptable overbearing impact and overshadowing on the adjoining dwelling to the north.
  • The proposal represents overdevelopment of the site that would result in a substandard level of residential amenity for future occupants, materially contravening the 'RES' zoning objective.
  • The applicant failed to provide sufficient technical documentation, including a clear site layout plan for private amenity space and evidence of a genuine need for a family flat.

Cited Policies (CDP)

Section 12.6.8 of the 2022-2028 CDPRES zoning objectiveSouth Dublin House Extension Design Guide 2010Quality Housing for Sustainable Communities Guidelines (2007)Sustainable Residential Development and Compact Settlements Guidelines for Planning Authorities (2014)

Decision Document Summary

The application at 15 Woodstown Rise proposed a Dutch hip roof conversion and a ground floor rear extension for use as a family flat. While the roof works were granted permission subject to conditions, the Planning Authority refused the extension component. The refusal was based on the extension's excessive scale and proximity to the northern boundary, which would result in overshadowing and an overbearing impact on neighbors. Additionally, the proposal was deemed to be overdevelopment that fail...
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