Redevelopment of existing 2 storey 3 bedroom semi-detached house at 14, Saint Thomas Road
14, Saint Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94 AE89
up to 2 storeys · 0.07 ha · Granted on appeal, July 2026 · permission to Jul 2031 (estimate)
Planning application D25B/0626/WEB to Dun Laoghaire Rathdown County Council: Redevelopment of existing 2 storey 3 bedroom semi-detached house, at 14, Saint Thomas Road, Mount Merrion. Granted by the council on 23 December 2025; granted on appeal by An Coimisiún Pleanála on 14 July 2026. The permission normally runs to July 2031 (an estimate: the grant plus five years).
Timeline
- Application lodged
- Council granted
- Appealed to An Coimisiún Pleanála
- Granted on appeal
- Permission normally ends (estimate)
The end date is an estimate: the grant plus five years, the normal life of a permission. An extension or a commencement changes it.
Key facts
Proposed development
Redevelopment of existing 2 storey 3 bedroom semi-detached house. Works to include the demolition of existing single storey extension to the side and rear (33.0 Sq.m) and demolition of outbuildings. The ground floor area will be extended (58.0 Sq.m) to include new kitchen / living / dining room, utility and study as well as internal revisions to the layout; the first floor area will be extended (41.6 Sq.m) to create a fourth bedroom, en-suite and bathroom as well as internal revisions to the layout, including alterations to the front, side and rear elevations and all associated site works.
Planning status
Permission was granted on appeal by An Coimisiún Pleanála on 14 Jul 2026. That decision is final, subject only to a High Court judicial review. Works can start once a commencement notice is lodged; the permission normally runs to Jul 2031 (estimate).
Appeal PL-500642-DR-26 on the An Coimisiún Pleanála website ↗
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Nearby applications
Other applications on the Dun Laoghaire Rathdown register close to this address.
- D24A/067423, St. Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94H778Granted
Planning Permission is sought by Florian Maul & Karen Eustace for widening of ex
- D26A/0035/WEB3, The Foster's, Mount Merrion, Dublin, A94TK64Granted
Alterations to existing vehicular entrance to increase in width to 3.5M. Demolition of the existing garage and single storey garden structure to rear…
- D25A/0411/WEB6, Iris Grove, Mount Merrion, Blackrock, Co. Dublin, A94RH56Granted
Demolition of a single-storey conservatory and a boiler house to the rear and si
- D24A/0689/WEB15, The Rise, Mount Merrion, Blackrock, Dublin, A94CF74Closed
(i) Demolition of one existing chimney
- D24A/0706/WEB15, The Rise, Mount Merrion, Blackrock, Dublin, A94CF74On Site
(i) Demolition of one existing chimney
- REF159242 The Close, Mount Merrion, Blackrock, Dublin, A94 NX27In Assessment
Single story extension to rear of existing dwelling with 'PRE 63' garage conver
Related
About this page: the facts above come from the statutory public planning register kept by Dun Laoghaire Rathdown County Council and are refreshed weekly (last updated 2 Sept 2026). Applicant names and contact details are not shown. Status labels are PlanningLeads' plain-language reading of the register status and the "Use" label is classified by AI from the public description (see how we use AI); neither is legal advice and the council's file is the record. How we handle this data: privacy notice.
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