SD24B/0111

(i) Retention of single storey extension to side and rear of existing dwelling and; (ii) Permission for dormer extension to rear of existing building; and all associated site works.

Split decision

Core Reason for the Refused Part

The proposed dormer extension was refused due to its inappropriate scale, massing, and design, which would result in an overbearing impact on neighboring properties and conflict with the established residential character and local design guidelines.

Decision Maker's Conclusion

  • The form and design of the dormer extension are contrary to the provisions of the South Dublin County Council House Extension Design Guide 2010.
  • The proposal would create an unacceptable overbearing impact on the residential amenities of the adjacent properties located to the east and west of the site.
  • The overall scale and massing of the development are inconsistent with the established built form of Palmer Park and violate the 'RES' zoning objective which seeks to protect and improve residential amenity.

Cited Policies (CDP)

South Dublin County Council House Extension Design Guide 2010RES land-use zoning objectiveSouth Dublin County Development Plan 2022-2028

Decision Document Summary

This application at 40 Palmer Park, Rathfarnham, sought the retention of a single-storey side and rear extension and permission for a new rear dormer extension. The Planning Authority issued a split decision, granting retention for the ground-floor works subject to conditions regarding finishes, drainage, and development contributions. However, permission for the dormer extension was refused because its scale and design were deemed visually intrusive and overbearing for neighboring residents, re...
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