WEB2370/25

PROTECTED STRUCTURE: The proposed development will consist of alterations & attic dormer extension to the existing house to include, • A new rear dormer window to replace two existing rooflights in the non-original pitched roof, •A new staircase from first floor level to the previously converted attic space, • Two new conservation grade rooflight to the front roof slope, •Replacement of the existing non original cement type roof slates with a natural slate roof finish.

Refused

Core Refusal Reason

The proposed rear dormer extension and associated internal staircase would significantly and negatively impact the architectural character, historic plan form, and original fabric of a Protected Structure, while setting an undesirable precedent for the surrounding residential conservation area.

Decision Maker's Conclusion

  • The rear dormer would become a dominant and discordant feature in the roofscape, disrupting the symmetry and character of the protected terrace (nos. 1-9 Synge Street).
  • The introduction of a new staircase into the principal hall would significantly alter the internal spatial arrangement and hierarchy, compromising the original plan form which is a key characteristic of this villa-style house.
  • The works would result in the unacceptable loss of historic fabric, including original cornices, balustrades, and timber rafters, and would fail to contribute positively to the Residential Conservation Area.

Cited Policies (CDP)

Dublin City Development Plan 2022-2028Policy BHA2 (Development of Protected Structures)Policy BHA9 (Archaeology & Built Heritage / Conservation Areas)Zoning Objective Z2 (Residential Conservation)Appendix 18, Section 5 (Attic Conversions / Dormer Windows)Table 18.1 (Dormer Window Guidance)Chapter 15 (Development Standards)Architectural Heritage Protection Guidelines (2011) Sections 9.2.7, 9.4.22, 11.2.1, 11.2.2, 11.2.3

Decision Document Summary

The application seeks permission for alterations to No. 5 Synge Street, a protected Victorian villa-style house in Dublin 8, primarily consisting of a new rear dormer window and a staircase to facilitate access to an existing attic storage area. The site is located within a Z2 Residential Conservation Area where the preservation of the architectural rhythm and historic roofscape is paramount. Although the applicant submitted modifications on appeal to reduce the dormer size and omit front roofli...
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