WEB1740/23

RETENTION: The development consists of: 1. A 2m high timber fence severing the existing garage from 23 Shanowen Avenue to serve 23A Shanowen Avenue, 2. The change of use of part of the existing single-storey garage at 23 Shanowen Avenue as ancillary family accommodation of 28 sqm to the existing house at 23A Shanowen Avenue and 3. A pedestrian gate constructed at the northern boundary wall to Shanowen Road.

Refused

Core Refusal Reason

The development fails to meet ancillary family accommodation standards due to the physical separation of the units and the resulting inadequate private open space for the primary dwelling.

Decision Maker's Conclusion

  • The detached garden shed structure lacks the necessary physical integration with the main dwelling required by the Dublin City Development Plan for ancillary family accommodation.
  • The subdivision of the site has reduced the rear garden of the original property to 37.5 sqm, which is insufficient to protect the residential amenity of the house.
  • Granting retention would set an undesirable precedent for similar developments that contravene ministerial guidelines and the proper planning and sustainable development of the area.

Cited Policies (CDP)

Section 7.0 of Appendix 18Z1 zoning objectiveSection 15.11

Decision Document Summary

The application sought retention permission for a 2m high timber fence and the use of a detached garden shed as ancillary family accommodation at 23 & 23A Shanowen Avenue, Santry. Dublin City Council refused the proposal primarily because the structure is physically severed from the main residence, failing to meet the integration criteria set out in the Dublin City Development Plan 2022–2028. Additionally, the development significantly reduced the private open space of the original dwelling to a...
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