The proposed development will consist of modifications…

Proposed development

The proposed development will consist of modifications to, and extension of Dorn Hall to facilitate the reinstatement of the entire property as a single family dwelling house. Removals to main structure include: single storey extension to the entrance façade off Harbour Road (3 m2), removal of extension at ground floor into the former light well under the main entrance steps on the south east elevation (3 m2) and the partial demolition of a two storey wing to the northeastern gable end of the main house ground floor (9 m2), first floor (41 m2) and associated external terrace at first floor level. Total removals comprise (56 m2). The proposal also includes minor alterations to the original Dorn Hall comprising modifications to the existing entrance door to the northwestern facade. Additions include: 3 level split extension to the northwest with new entrance, bedroom, ensuite, utility, playroom, plant room, store and lift at ground floor level (lift extending to all floors) (71 m2) incorporating external stone walls of existing structure. New kitchen, dining, sitting room, pantry and wc at first floor level (89 m2) incorporating stone gable wall of existing structure, with terrace overlooking existing garden to the southeast. New sitting room, master bedroom, bathroom, lift & stairs access at second floor level (74 m2) located to the northeast. Total additions comprise (234 m2). A new terrace deck and single storey storage shed (8 m2), is also proposed at the northeastern end of the site at level +9.500. In addition, concealed solar panels are proposed to be located on the inner slopes of the original double pitched roof of Dorn Hall. The works will include the complete refurbishment and repair of the external and internal fabric of the retained original structure and the reversal of the multi-unit modifications made to the property in the mid 20th C. Proposed landscaping works are limited to removal and replanting of trees at the proposed location of the master bedroom suite at the upper level (+9.500) of the Dorn Hall site.

What happens next

Permission was granted on 18 Mar 2026. Third parties may appeal within four weeks; after that the permission is final and works can start once a commencement notice is lodged.

• Open the official file on the Fingal planning register ↗
• More applications in Fingal
• Planning a smaller project? Since 27 July 2026 many need no permission: check yours
• How the application process works