3182/23

PERMISSION: (a) demolition of existing single-storey extension to rear, (b) constuction of new single-storey extension to rear, (c) alterations to rear of existing house to provide for new split-level two-storey accommodiation, (d) new mansard shaped slated roof to rear with 2 new dormer windows, all to single storey terraced house.

Refused

Core Refusal Reason

The proposed two-storey extension is visually obtrusive due to its scale and design, negatively impacting the Grand Canal Conservation Area and violating Z2 zoning objectives.

Decision Maker's Conclusion

  • The extension's size, scale, and massing are visually obtrusive and unsuitable for the single-storey terraced context.
  • The development would set a negative precedent for inappropriate extensions within the Grand Canal Conservation Area.
  • The proposal fails to comply with Appendix 18, Section 5.1 regarding additional floors and the Z2 zoning objective for the area.

Cited Policies (CDP)

Appendix 18, Section 5.1Z2 zoning objective

Decision Document Summary

The proposal involves the demolition of an existing single-storey rear extension and the construction of a new two-storey extension at 19 Portobello Road, a single-storey terraced property within the Grand Canal Conservation Area. Dublin City Council refused permission because the scale and design of the two-storey addition were deemed visually obtrusive and injurious to the character of the conservation area. The decision noted that the development would set a negative precedent and contravene ...
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