Core Refusal Reason
The proposed development is considered an excessive and unjustified replacement dwelling rather than a modest extension, posing a significant negative impact on the sensitive Dublin Mountains landscape and failing to meet environmental and rural housing policy requirements.
Decision Maker's Conclusion
- The scale of the extension (349 sq.m or 230% increase) is excessive, effectively constituting a new replacement dwelling that fails to meet the 'modest' criteria or provide justification under rural housing policies H19 and H21.
- The application lacks essential technical information, including site levels for landscape impact assessment, wastewater treatment capacity evidence, and a mandatory Appropriate Assessment Screening for nearby SAC and SPA sites.
- The development's size, design, and inclusion of a non-compliant guest suite would degrade the natural character of the Dublin Mountains (HA-DM zone) and set a negative precedent for oversized rural dwellings.
Cited Policies (CDP)
Policy H21H21 Objective 1Policy H19H19 Objective 1Policy H23H23 Objective 1HA-DM zonePolicy H15Section 12.6.8Section 6.9.7
Decision Document Summary
This application proposed significant modifications to a previously granted permission at Deerwood, Brittas, resulting in a 349 sq.m extension to an existing dwelling. Situated within the 'HA-DM' zone of the Dublin Mountains, the proposal was refused as the scale was deemed excessive and equivalent to a replacement dwelling without sufficient policy justification. The Planning Authority cited concerns regarding the impact on protected views, the lack of environmental screening for nearby Europea...SOURCE PDFOpen Original
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