SD25A/0005W

Retention Permission of single storey garage/playroom/home office (circa. 49m2) to rear garden of existing dwelling with associated site works.

Refused

Core Refusal Reason

The development represents overdevelopment of the site and is based on inaccurate application drawings that fail to disclose the unauthorized subdivision of the primary dwelling into multiple residential units, thereby compromising residential amenity and failing to meet open space standards.

Decision Maker's Conclusion

  • The applicant failed to demonstrate that the plans submitted sufficiently correspond with the development as constructed on-site, particularly regarding the unauthorized subdivision of the property into at least two separate residential units.
  • The structure constitutes overdevelopment of the site, resulting in a cramped configuration that fails to provide the required quantum of usable private open space for the occupants of the multiple residential units now present on the plot.
  • The retention of the structure would be contrary to the 'RES' zoning objective of the South Dublin County Development Plan 2022-2028, which seeks to protect and improve residential amenity, and would set an undesirable precedent for similar unsustainable development.

Cited Policies (CDP)

RES zoning objectivePolicy H14Policy H14 Objective 1Policy H15 Objective 1Section 12.6.8SDCC House Extension Design Guide (2025)Built Form Principle (BFP) 1Built Form Principle (BFP) 6SPPR2 of the Sustainable Residential Development and Compact Settlements Guidelines (2024)

Decision Document Summary

This Inspector's Report evaluates a First Party appeal against the refusal of retention permission for a 49sqm single-storey garage/playroom/home office in the rear garden of 17 Wheatfields Close, Clondalkin. While the applicant argues the structure is ancillary to the large family occupying the main house and cites similar precedents, the Inspector's site visit revealed that the original property has likely been subdivided into at least two separate residential units (17 and 17A), with the stru...
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