Core Refusal Reason
The proposed extension was refused due to its excessive scale and bulk in a sensitive landscape setting, combined with a failure to demonstrate adequate wastewater treatment capacity for the enlarged dwelling.
Decision Maker's Conclusion
- The scale, mass, and bulk of the proposed extension are considered excessive and unsympathetic to the sensitive rural and high-amenity character of the Glenasmole area.
- The applicant failed to provide an up-to-date Site Characterisation Report, leaving uncertainty regarding whether the existing wastewater treatment system can support the additional load of a 6-bedroom house.
- The development is contrary to the South Dublin County Development Plan 2022-2028, specifically Policy H23 Objective 1, which requires residential extensions to minimize visual impact on the surrounding landscape.
Cited Policies (CDP)
Policy H23 Objective 1
Decision Document Summary
The proposal involved the construction of a single-storey side extension to an existing dwelling located in the sensitive rural setting of Glenasmole, Tallaght. South Dublin County Council refused permission because the design's scale and bulk were deemed to have a negative visual impact on the high-amenity landscape. Furthermore, the application lacked sufficient technical evidence to prove compliance with EPA wastewater treatment standards, as the submitted reports were based on an incorrect b...SOURCE PDFOpen Original
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