8, Saint Thomas Mead, Mount Merrion, Blackrock, Co. Dublin, A94N902
Retention permission for a modified garage conversion and side extension.
D26B/0225/WEB · Dun Laoghaire Rathdown County Council · Lodged 16 April 2026
- Reference
- D26B/0225/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 16 April 2026
Summary
AI-generatedThis application seeks retention permission for amendments to a previously granted permission (D23B/0234) at Mount Merrion. The modifications resulted in only a partial conversion of the former garage, with the permitted side extension and modified garage conversion now measuring 12.92 sqm.
- Floor area
- 13 m²
Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.
Official record
Development description
The development consists of an amendment and modification of the permission as granted under planning ref. D23b/0234 that has resulted in only the partial conversion of the former garage. The permitted side extension and modified conversion of the garage now extend to 12.92sqm.
Land-use zoning
What this land is zoned for
“A To provide residential development and improve residential amenity while protecting the existing residential amenities”
Objective set by the COUNTY DEVELOPMENT PLAN 2022-2028 (2022–2028). The planning authority decides each application on its own merits — this is the zoning context, not a compliance assessment.
Read the zoning objectives in the development planBuilt & sold
What happened next
Beyond the decision: whether this development was built, and what property here has sold for.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 12 Foster Ave, Mt Merrion, Dublin | Oct 2025 | €1,410,000 | 79 m |
| Apartments 1-11, Fitzwilliam Court, The Rise Mount Merrion | Dec 2025 | €4,400,000 | 120 m |
| Apt 100, Belfield Park, Stillorgan Road | Jan 2026 | €465,000 | 154 m |
| Apartment 4 Greygates, Roebuck Ave, Mount Merrionprice excludes VAT | Jan 2026 | €190,000 | 160 m |
| 47 Belfield Park, Stillorgan Rd, Dublin | Dec 2025 | €380,000 | 200 m |
| 14 St Thomas Road, Mount Merrion, Blackrock | Jul 2025 | €1,750,000 | 209 m |
| Apt 13, Belfield Park, Stillorgan Rd | Jan 2025 | €358,000 | 246 m |
| 5 Greygates, Stillorgan Road, Mount Merrion | Jun 2025 | €1,690,000 | 254 m |
Nearby properties, not this site — a guide to local values.
Sources: Building Control Management System (commencement notices) and the Residential Property Price Register, licensed under CC BY 4.0. Records are matched to this application by location and may not be exhaustive; always confirm against the official source before relying on them.
Key dates
Timeline
- Application received16 April 2026
- Decision due10 June 2026
- Decision issued17 April 2026
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- RefusedAt this site
Retention planning permission sought for a single storey extension (32.5sqm) to the rear of her property,…
8, Saint Thomas Mead, Mount Merrion, Blackrock, Dublin, A94N902
D25B/0077Dún Laoghaire–RathdownLodged 13 Feb 2025Retention
- GrantedAt this site
Conversion and extension of a single storey flat roof side garage and construction of a single storey 'link'…
8, Saint Thomas Mead, Mount Merrion, Blackrock, Dublin, A94N902
D23B/0234Dún Laoghaire–RathdownLodged 18 May 2023Extension
- InvalidAt this site
Retention for a single storey extension (32.5sqm) to the rear of the property, including associated site…
8, Saint Thomas Mead, Mount Merrion, Blackrock, Dublin, A94N902
D24B/0004Dún Laoghaire–RathdownLodged 15 Jan 2024Retention
- WithdrawnAt this site
Retention permission for a single storey extension (32.5sqm) to the rear, including associated site works,…
8, Saint Thomas Mead, Mount Merrion, Blackrock, Dublin, A94N902
D24B/0201Dún Laoghaire–RathdownLodged 29 Apr 2024Retention
- GrantedAt this site
The development consists of an amendment and modification of the permission as granted under Planning Ref.…
8, Saint Thomas Mead, Mount Merrion, Dublin, A94N902
D26B/0231/WEBDún Laoghaire–RathdownLodged 20 Apr 2026Alterations
- Granted30 m away
Permission is sought for: (1) minor demolition works, construction of a new part single, part two storey flat…
10, Saint Thomas Mead, Mount Merrion, Co. Dublin
D15A/0824Dún Laoghaire–RathdownLodged 1 Mar 2016Extension
- Granted40 m away
Ground floor extension to sides and rear, and for first floor extensions at sides. [LOCATION] 11 St. Thomas…
11 St. Thomas Mead, Mount Merrion, Co. Dublin.
D02B/0103Dún Laoghaire–RathdownLodged 5 Mar 2002Extension
- Granted50 m away
A. 2 storey extensions to side/rear bedrooms over living. B. Demolish garage/boiler house to side. C. New bay…
5, St. Thomas Mead, St. Thomas Road, Mount Merrion, Co. Dublin
D04B/0532Dún Laoghaire–RathdownLodged 6 Jul 2004Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedAlterations
The development consists of an amendment and modification of the permission as granted under Planning Ref.…
8, Saint Thomas Mead, Mount Merrion, Dublin, A94N902
D26B/0231/WEBDún Laoghaire–RathdownLodged 20 Apr 2026
- GrantedAlterations
The development consists of minor alterations to previously approved Planning Reg. Ref. D07A/1324. These…
Oakfield, Killiney Hill Road, Killiney, Co. Dublin
D09A/0081Dún Laoghaire–RathdownLodged 6 Feb 2009
- InvalidAlterations
Amendments to previous grant of permission D22B/0083, including a garage conversion with a new front window,…
93 Avondale Road, Killiney, Co Dublin, A96 D9P3
D25B/0088/WEBDún Laoghaire–RathdownLodged 20 Feb 2025
- Awaiting decisionAlterations
The development will consist of modifications to previously granted planning application Ref; 221069.…
Kilwarden , Kinnegad , Co. Meah
2461089MeathLodged 13 Dec 2024
- GrantedExtension
Permission for the conversion a domestic garage into habitable rooms (change of design to permission granted…
24, Woodley Park, Kilmacud West, Dublin 14
D16B/0294Dún Laoghaire–RathdownLodged 6 Jul 2016
- GrantedExtension
Planning permission to convert attached garage at side to domestic use and so complete work permitted under…
7, Wynberg Park, Blackrock, Co. Dublin
D12B/0127Dún Laoghaire–RathdownLodged 18 Apr 2012
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