8, Saint Thomas Mead, Mount Merrion, Blackrock, Dublin, A94N902
Retention of a single-storey rear extension.
D25B/0077 · Dun Laoghaire Rathdown County Council · Lodged 13 February 2025
- Reference
- D25B/0077
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 13 February 2025
Summary
AI-generatedRetention permission is sought for an existing single-storey extension to the rear of the property. The extension measures 32.5 square metres and includes two new windows on the eastern side.
- Storey
- 1
- Floor area
- 33 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
Retention planning permission sought for a single storey extension (32.5sqm) to the rear of her property, including associated site works, landscaping and two new windows on the east elevation.
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.
Built — construction complete
A commencement notice records works starting on 14 September 2023.
Notified floor area: 169.08 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 12 Foster Ave, Mt Merrion, Dublin | Oct 2025 | €1,410,000 | 77 m |
| Apartments 1-11, Fitzwilliam Court, The Rise Mount Merrion | Dec 2025 | €4,400,000 | 122 m |
| Apt 100, Belfield Park, Stillorgan Road | Jan 2026 | €465,000 | 156 m |
| Apartment 4 Greygates, Roebuck Ave, Mount Merrionprice excludes VAT | Jan 2026 | €190,000 | 163 m |
| 47 Belfield Park, Stillorgan Rd, Dublin | Dec 2025 | €380,000 | 201 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 | 248 m |
| 5 Greygates, Stillorgan Road, Mount Merrion | Jun 2025 | €1,690,000 | 256 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 received13 February 2025
- Decision due9 April 2025
- Decision issued7 April 2025
- Appeal submitted2 May 2025
- Appeal decided11 August 2025
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- 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
- 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
- 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
The development consists of an amendment and modification of the permission as granted under Planning Ref.…
8, Saint Thomas Mead, Mount Merrion, Blackrock, Co. Dublin, A94N902
D26B/0225/WEBDún Laoghaire–RathdownLodged 16 Apr 2026Retention
- 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
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
- Granted50 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
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- WithdrawnRetention
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 2024
- InvalidRetention
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 2024
- GrantedRetention
Retention permission is sought for a single storey extension to the rear and side of the existing dwelling
57 Dewberry , Mount Oval , Rochestown
2140720Cork CityLodged 8 Dec 2021
- GrantedRetention
RETENTION: Retention planning permission is sought for the construction of a single storey extension to the…
9, Saint Pappin's Green, Glasnevin , Dublin 9
4625/22Dublin CityLodged 5 Aug 2022
- GrantedRetention
Retention permission is sought for single storey rear extension 33 sq.m floor area to 133.5 sq.m floor area…
160, Meadow Grove, Dundrum, Dublin 16.
D10B/0090Dún Laoghaire–RathdownLodged 3 Mar 2010
- GrantedRetention
RETENTION: Retention planning permission is sought for single storey extension to rear of existing house
23, Glengarriff Parade, Phibsborough, Dublin 7
4603/18Dublin CityLodged 13 Dec 2018
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.