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Thornhill Oaks, Cherrygarth, Mount Merrion, Blackrock, Co. Dublin, and Thornhill House (a Protected Structure) A94W7C5

GRANT PERMISSION

Planning application D25A/0862/WEB

Dublin - Dun Laoghaire Rathdown County Council

Proposed Development

Oak View Property Developments Limited, intend to apply for Retention Permission

Application Timeline

  1. Application received

    12 Nov 2025

  2. Decision: GRANT PERMISSION

    14 Jan 2026

  3. Decision due

    15 Jan 2026

  4. Grant issued

    18 Feb 2026

Application Details

Location
Thornhill Oaks, Cherrygarth, Mount Merrion, Blackrock, Co. Dublin, and Thornhill House (a Protected Structure) A94W7C5
Applicant
N/A
Application Type
Permission
Planning Authority
Dun Laoghaire Rathdown County Council
Site Area
7722 ha

Timeline

Registration Date
12 November 2025
Status
Final Grant
Decision
GRANT PERMISSION
Decision Date
14 January 2026
Grant Date
18 February 2026

Location

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Planning Applications Nearby

What the council has granted and refused around this site is the best guide to how a similar application will fare.

0m
D24B/0425/WEBGRANT PERMISSION FOR RETENTION8 Oct 2024

Oak View Property Developments Limited, intend to apply for Retention Permissio

Thornhill Oaks, Cherrygarth, Mount Merrion, Blackrock, Dublin, A94W7C5

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D17A/0240REFUSE PERMISSION16 Mar 2017

Permission for development. The proposed development comprisis of 47 no.

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9m
D19A/0748GRANT PERMISSION8 Oct 2019

Permission for development on a site of c. 1.39 ha.

Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co. Dublin

9m
D21A/0161REFUSE PERMISSION26 Feb 2021

Permission for development. The proposed development will consist of

Site of c. 1.39 ha, Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co.Dublin A Protected Structure (RPS No. 936)

9m
D20A/0274DECLARE INVALID (SITE NOTICE)30 Mar 2020

Permission for development. The proposed development will consist of

Site of c. 1.39 ha, Thornhill House, CherryGarth, Mount Merrion, Blackrock, Co. Dublin

9m
D20A/0432REFUSE PERMISSION22 Jun 2020

Permission for development. The proposed development will consist of

Site of c. 1.39 ha, Thornhill House, CherryGarth, Mount Merrion, Blackrock, Co. Dublin

9m
D20A/0057REFUSE PERMISSION28 Jan 2020

Permission for development. The proposed development will consist of

At a site of c.1.39ha, Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co. Dublin (Protected Structure Ref. No. 936)

36m
D24B/0345/WEBGRANT PERMISSION30 Jul 2024

Permission is sought for The conversion of existing attic space to new bedroom a

48, Thornhill Oaks, Mount Merrion, Co. Dublin, A94 K0E7

45m
D26B/0071/WEBGRANT PERMISSION6 Feb 2026

The development consists of the following: Conversion of existing attic space to

49 Thornhill Oaks, Cherrygarth, Mount Merrion, Blackrock, Dublin, A94Y8X5

73m
D23A/0185REFUSE PERMISSION22 Mar 2023

Permission is sought for the subdivision of the existing property of (0.054 hect

43, Cherrygarth, Mount Merrion, Blackrock, Dublin, A94PF10

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Thornhill Oaks, Cherrygarth, Mount Merrion, Blackrock, Co. Dublin, and Thornhill House (a Protected Structure) A94W7C5 - Planning Application D25A/0862/WEB | Permission.ie