Site at Thornhill Oaks, Mount Merrion, Blackrock, Co Dublin
Redesign of a permitted gatelodge house to provide a part single-storey, part two-storey dwelling.
D23A/0013 · Dun Laoghaire Rathdown County Council · Lodged 9 January 2023
- Reference
- D23A/0013
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 9 January 2023
Summary
AI-generatedThe application proposes the redesign of a previously permitted gatelodge house to now provide a part single-storey and part two-storey dwelling. No works are proposed to the nearby Thornhill House, which is a protected structure.
- Residential unit
- 1
- Storeys
- 2
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
Development will consist of the redesign of the permitted gatelodge house (d20a/0432, abp-308150-20) to now provide a part single/part 2 storey dwelling at this location. No works are proposed to thornhill house, a protected structure (rps no 936) under this planning application.
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 |
|---|---|---|---|
| 56 Thornhill Oaks, Mount Merrionprice excludes VAT | Mar 2025 | €775,330 | 19 m |
| 2 Cherrygarth, Mount Merrionprice excludes VAT | Oct 2025 | €881,057 | 40 m |
| Apt.28 - Thornhill Oaks, Cherry Garth - Mount Merrion, Blackrock | Jul 2025 | €999,999 | 57 m |
| 61 The Stables, Thornhill Oaks, Mount Merrionprice excludes VAT | Aug 2025 | €889,868 | 60 m |
| 56 Trees Rd, Mount Merrion, Blackrock | Apr 2025 | €1,285,000 | 66 m |
| 4 Cherry Garth, Mount Merrion, Blackrock | Aug 2025 | €1,650,000 | 72 m |
| 63 Thornhill Oaks, Blackrock, Co. Dublin | May 2026 | €870,000 | 97 m |
| 31 Trees Rd, Mount Merrion, Blackrock | Nov 2025 | €1,740,000 | 104 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 received9 January 2023
- Decision issued13 February 2023
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
Redesign of the permitted no. 40 Thornhill Oaks (D20A/0432, ABP308150-20) to provide a part single/part two…
Site at Thornhill Oaks, Mount Merrion, Blackrock, Co Dublin
D24A/0059Dún Laoghaire–RathdownLodged 31 Jan 2024Alterations
- InvalidAt this site
Redesign of the permitted No. 40 Thornhill Oaks (D20A/0432 ABP 308150-20) to now provide a part single/part 2…
Site at 40 Thornhill Oaks, Mount Merrion, Blackrock, Co Dublin
D23A/0782Dún Laoghaire–RathdownLodged 11 Dec 2023New dwelling
- Granted40 m away
Permission is sought for proposed extension and alterations to existing bungalow dwelling including new…
1, Cherry Garth, Mount Merrion, Co. Dublin
D12B/0090Dún Laoghaire–RathdownLodged 16 Mar 2012Extension
- Granted50 m away
Permission is sought for the demolition of an existing chimney and reinstatement of roof slates
62, Trees Road, Mount Merrion, Co. Dublin
D17B/0547Dún Laoghaire–RathdownLodged 1 Dec 2017Alterations
- Granted50 m away
For conversion of attic space for three new bedrooms and bathroom with two dormer windows to front elevation…
2, Cherrygarth, Mount Merrion, Co. Dublin
D06B/0371Dún Laoghaire–RathdownLodged 28 Apr 2006Extension
- Granted50 m away
Permission is sought for: a) the conversion of existing garage with associated works, including the provision…
68, Trees Road Lower, Mount Merrion, Co. Dublin
D15B/0435Dún Laoghaire–RathdownLodged 27 Nov 2015Extension
- Granted60 m away
Permission for development on a site of c. 1.39 ha to amend the apartment block and basement permitted under…
Thornhill House, Cherry Garth, Mount Merrion, Blackrock, Co. Dublin
D19A/0748Dún Laoghaire–RathdownLodged 8 Oct 2019Apartments
- Refused60 m away
Permission for development. The proposed development comprises of 47 no. dwellings provided as follows; 33…
Thornhill House, Cherrygarth, Mount Merrion, Blackrock, Co. Dublin
D17A/0240Dún Laoghaire–RathdownLodged 26 Sept 2017Apartments
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- InvalidNew dwelling
Redesign of the permitted No. 40 Thornhill Oaks (D20A/0432 ABP 308150-20) to now provide a part single/part 2…
Site at 40 Thornhill Oaks, Mount Merrion, Blackrock, Co Dublin
D23A/0782Dún Laoghaire–RathdownLodged 11 Dec 2023
- RefusedAlterations
Redesign of the permitted no. 40 Thornhill Oaks (D20A/0432, ABP308150-20) to provide a part single/part two…
Site at Thornhill Oaks, Mount Merrion, Blackrock, Co Dublin
D24A/0059Dún Laoghaire–RathdownLodged 31 Jan 2024
- GrantedApartments
Develop the gate-lodge structure at the entrance. This development is in the curtilage of a Protected…
Carraig Na Greine, off Coliemore Road, Dalkey, Co. Dublin
D03A/0920Dún Laoghaire–RathdownLodged 26 Jan 2004
- RefusedHousing estate
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 2021
- GrantedNew dwelling
(A) To construct a 2 storey detached dwelling house on site adjoining Gate Lodge (change of dwelling house…
Grove House, Norwood Grove, Ringmeen, Cobh, Co. Cork
216869corkLodged 21 Oct 2021
- Awaiting decisionExtension
Permission for development at this site. The development will consist/consists of (i) internal alterations to…
Oak Lodge , Talbots Inch Village , Kilkenny
18340KilkennyLodged 24 May 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.