Thornhill Oaks, Cherrygarth, Mount Merrion, Blackrock, Dublin, A94W7C5
Retention of external stone steps at an apartment block in Mount Merrion.
D24B/0425/WEB · Dun Laoghaire Rathdown County Council · Lodged 8 October 2024
- Reference
- D24B/0425/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 8 October 2024
Summary
AI-generatedRetention permission is sought for two flights of external stone steps providing pedestrian access to the Thornhill Oaks apartment block. One flight is located at the southern gable and the other is west of the car ramp.
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
Oak view property developments limited, intend to apply for retention permission for development within the grounds of thornhill oaks, cherrygarth, mount merrion, blackrock, co. Dublin. The development consists of the retention of an external flight, (2.2 metres wide), of stone steps, (consisting of 10 no. X ambulant steps), providing pedestrian access, located at the southern gable of the existing apartment block. Retention is also sought of a second flight (1.8 metres wide) of external stone steps, which also provides pedestrian access to thornhill oaks. This flight (consisting of a total of 6 no. X ambulant steps) is located west of the existing car ramp entrance to the apartment block.
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 |
|---|---|---|---|
| 61 The Stables, Thornhill Oaks, Mount Merrionprice excludes VAT | Aug 2025 | €889,868 | 27 m |
| 50 Thornhill Oaks, Cherry Garth, Mount Merrion | Sept 2025 | €1,500,000 | 42 m |
| 49 Thornhill Oaks, Cherry Garth, Mount Merrion | Dec 2025 | €1,430,135 | 45 m |
| Thornhill, Cherry Garth, Mount Merrion | Aug 2025 | €1,750,000 | 48 m |
| 63 Thornhill Oaks, Blackrock, Co. Dublin | May 2026 | €870,000 | 53 m |
| 49 Thornhill Oaks, Cherry Garth, Mount Merrionprice excludes VAT | Jan 2025 | €1,145,374 | 53 m |
| Apt.28 - Thornhill Oaks, Cherry Garth - Mount Merrion, Blackrock | Jul 2025 | €999,999 | 53 m |
| 62 Thornhill Oaks, Blackrock, Co. Dublinprice excludes VAT | Mar 2026 | €859,031 | 63 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 received8 October 2024
- Decision due2 December 2024
- Decision issued2 December 2024
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- GrantedAt this site
Apply for Retention Permission for development within the grounds of Thornhill Oaks, and Thornhill House, a…
Thornhill Oaks, Cherrygarth, Mount Merrion, Blackrock, Co. Dublin, and Thornhill House (a Protected Structure) A94W7C5
D25A/0862/WEBDún Laoghaire–RathdownLodged 12 Nov 2025Retention
- InvalidAt this site
Permission for development. The proposed development will consist of the reconfiguration and redesign of the…
Site of c. 1.39 ha, Thornhill House, CherryGarth, Mount Merrion, Blackrock, Co. Dublin
D20A/0274Dún Laoghaire–RathdownLodged 30 Mar 2020Housing estate
- RefusedAt this site
Permission for development. The proposed development will consist of: Conservation works to Thornhill House,…
Site of c. 1.39 ha, Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co.Dublin A Protected Structure (RPS No. 936)
D21A/0161Dún Laoghaire–RathdownLodged 26 Feb 2021Housing estate
- RefusedAt this site
Permission for development. The proposed development will consist of the temporary removal of the eastern…
At a site of c.1.39ha, Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co. Dublin (Protected Structure Ref. No. 936)
D20A/0057Dún Laoghaire–RathdownLodged 28 Jan 2020Alterations
- RefusedAt this site
Permission for development. The proposed development will consist of the reconfiguration and redesign of the…
Site of c. 1.39 ha, Thornhill House, CherryGarth, Mount Merrion, Blackrock, Co. Dublin
D20A/0432Dún Laoghaire–RathdownLodged 22 Jun 2020Housing estate
- Compliance submissionAt this site
Compliance with Condition no. 20 of Reg Ref no. ABP-31028521 (D21A/0161)
Site of c. 1.39 ha, Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co.Dublin A Protected Structure (RPS No. 936)
D21A/0161/C9Dún Laoghaire–RathdownLodged 23 Jun 2023Other
- Compliance submissionAt this site
Compliance with Condition no. 19 of Reg Ref no. ABP-31028521 (D21A/0161)
Site of c. 1.39 ha, Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co.Dublin A Protected Structure (RPS No. 936)
D21A/0161/C14Dún Laoghaire–RathdownLodged 1 Feb 2024Other
- Compliance submissionAt this site
Compliance with Condition no.5 of Reg Ref no. ABP-31028521 (D21A/0161)
Site of c. 1.39 ha, Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co.Dublin A Protected Structure (RPS No. 936)
D21A/0161/C3Dún Laoghaire–RathdownLodged 4 Apr 2023Other
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedNew dwelling
Retention Permission is sought for demolition of the existing dwelling and garage in its entirety, Permission…
40, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94K4X0
D25A/0089/WEBDún Laoghaire–RathdownLodged 6 Feb 2025
- GrantedAlterations
Planning Permission is sought by the applicants for widening of existing vehicular entrance gate with 2no.…
23, St. Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94H778
D24A/0674Dún Laoghaire–RathdownLodged 30 Aug 2024
- InvalidChange of use
The development will consist of the change of use from office use to 2 no apartments for short stay…
2b, Main Street, Blackrock, Dublin, A94RX45
D24A/0836/WEBDún Laoghaire–RathdownLodged 17 Oct 2024
- GrantedRetention
Application for retention permission and permission for development at 7 Booterstown Avenue, Booterstown,…
7, Booterstown Avenue, Booterstown, Co. Dublin, A94T8P4
D25A/0829/WEBDún Laoghaire–RathdownLodged 31 Oct 2025
- GrantedAlterations
We, Naas Road Property Development Company Limited, intend to apply for planning permission for amendments to…
24-28, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin
D24A/0783/WEBDún Laoghaire–RathdownLodged 30 Sept 2024
- InvalidExtension
Permission for development at 22 Woodlands Park, Mount Merrion Avenue, Blackrock, Co. Dublin, A94 PF22. The…
22, Woodlands Park, Mount Merrion Avenue, Blackrock, Co. Dublin, A94PF22
D24A/0763/WEBDún Laoghaire–RathdownLodged 24 Sept 2024
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