Core Refusal Reason
The proposed extension is of excessive scale and massing, effectively constituting a new dwelling that fails to protect the high amenity character of the Dublin Mountains and lacks technical justification regarding topography, wastewater, and access.
Decision Maker's Conclusion
- The development's excessive mass and scale are inconsistent with the nature of an extension, effectively creating a new dwelling that contravenes the HA-DM zoning objective to protect the natural character of the Dublin Mountains.
- The proposal fails to demonstrate sensitive design relative to the site's steep topography, relying on intrusive cut-and-fill solutions and lacking essential technical data on wastewater treatment and visual impact.
- Insufficient information was provided regarding car parking, access, and site analysis, leading to concerns over traffic hazards and the establishment of an undesirable precedent for haphazard rural development.
Cited Policies (CDP)
Policy H23Policy H27HA-DM zoning objectiveSection 11.3.4 (ii)Policy H9 Objective 2
Decision Document Summary
This application sought permission for a two-storey split-level extension to an existing cottage at Blackthorn Hill, Saggart, within the sensitive High Amenity Dublin Mountains (HA-DM) zone. The Planning Authority refused the proposal primarily because its excessive scale and massing were deemed more akin to a new dwelling than an extension, threatening the area's natural character. Furthermore, the applicant failed to provide adequate technical assessments regarding the site's steep topography,...SOURCE PDFOpen Original
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