64, Thornhill Road, Mount Merrion, Dublin, A94T6T0
Demolition of a side extension and construction of a new single-storey side/rear extension and a first-floor side extension.
D23B/0062 · Dun Laoghaire Rathdown County Council · Lodged 17 February 2023
- Reference
- D23B/0062
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 17 February 2023
Summary
AI-generatedThe development consists of the demolition of an existing single-storey side extension, utility room, and chimney. It proposes a new single-storey extension to the side and rear, alongside a first-floor extension to the side to accommodate a new family bathroom.
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
Demolition of existing single storey extension to side, utility room to rear and chimney. The construction of a new single storey extension to side and rear for proposed study, new layout for kitchen/living and utility area and new long window to existing front elevation. Construction of first floor extension to the side for a new family bathroom.
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 |
|---|---|---|---|
| 98 Lr Kilmacud Rd, Stillorgan, Dublin | Jul 2025 | €1,187,000 | 101 m |
| 10 Redesdale Rd, Mount Merrion, Co Dublin | Jun 2026 | €1,220,000 | 102 m |
| 2 Redesdale Court, Redesdale Rd, Mount Merrion | Nov 2025 | €650,000 | 121 m |
| 13 Redesdale Rd, Mount Merrion, Dublin | Sept 2025 | €850,000 | 131 m |
| 7 Clonmore Rd, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 139 m |
| 44 Slieve Rua Dr, Kilmacud, Blackrock | Feb 2025 | €860,000 | 160 m |
| 27 Redesdale Rd, Mount Merrion, Dublin | May 2025 | €1,000,000 | 220 m |
| 134 Lower Kilmacud Rd, Stillorgan, Dublin | Mar 2026 | €915,000 | 224 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 received17 February 2023
- Decision due13 April 2023
- Decision issued11 April 2023
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- InvalidAt this site
Permission for Amendments to previously granted permission P/0863/23. The development will consist of:…
64, Thornhill Road, Mount Merrion, Stillorgan, Co. Dublin, A94T6T0
D24B/0250Dún Laoghaire–RathdownLodged 27 May 2024Extension
- GrantedAt this site
Permission for Amendments to previously granted permission register Reference D23B/0062 for development. The…
64, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94T6T0
D24B/0265Dún Laoghaire–RathdownLodged 6 Jun 2024Alterations
- GrantedAt this site
Demolition of the existing single storey garage / extension to the side and rear and existing chimney to the…
68, Thornhill Road, Mount Merrion, Blackrock, Co. Dublin, A94E2R9
D24A/0932/WEBDún Laoghaire–RathdownLodged 25 Nov 2024Extension
- RefusedAt this site
Alterations to previously granted planning application reg/ref: D24A/0932/WEB to include attic dormer with…
68, Thornhill Road, Mount Merrion, Lower Kilmacud Road, Co. Dublin
D25A/0466/WEBDún Laoghaire–RathdownLodged 12 Jun 2025Alterations
- GrantedAt this site
Alterations to previously granted planning application reg/ref: D24A/0932/WEB to include: increased…
68, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94E2R9
D25A/0183/WEBDún Laoghaire–RathdownLodged 10 Mar 2025Alterations
- Compliance submissionAt this site
Compliance with Condition no. 2 a & b of Reg. Ref. D24A/0932/WEB
68, Thornhill Road, Mount Merrion, Blackrock, Co. Dublin, A94E2R9
D24A/0932/WEB/C1Dún Laoghaire–RathdownLodged 13 May 2025Other
- Granted30 m away
Permission is sought for demolition of single storey side garage and construction of attached two storey side…
70, Thornhill Road, Mount Merrion, Co. Dublin
D12B/0002Dún Laoghaire–RathdownLodged 15 Mar 2012Extension
- Withdrawn40 m away
(a) proposed ground floor bay window to front of house with hipped roof over bay window and porch area (b)…
56, Thornhill Road, Mount Merrion, Co. Dublin
D08A/0586Dún Laoghaire–RathdownLodged 22 May 2008Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedExtension
Demolition of existing extension to side and new single storey extension to side and rear side, comprising of…
Foxhill Cottage, 3, Greenhills Road, Walkinstown, Dublin 12
SD04B/0065South DublinLodged 18 Feb 2004
- GrantedExtension
Demolition of existing single storey conservatory extension, single storey utility room, the construction of…
11, The Court, Cypress Downs, Templeogue, Dublin 6W
SD16B/0132South DublinLodged 22 Apr 2016
- GrantedExtension
Removal of existing single storey extension to the side and rear, construction of new single storey utility…
69, Fosters Avenue, Mount Merrion, Co. Dublin.
D07B/0928Dún Laoghaire–RathdownLodged 16 Nov 2007
- GrantedExtension
Demolition of existing bathroom extension with storage underneath to the rear and the construction of a…
1, The Hill, Lower Glenageary Road, Dun Laoghaire, Co. Dublin
D08B/0121Dún Laoghaire–RathdownLodged 20 Feb 2008
- GrantedExtension
Demolition of an existing single storey garage to side and timber conservatory to rear, the provision of a…
51, Waltham Terrace, Blackrock, Co. Dublin
D04B/0456Dún Laoghaire–RathdownLodged 10 Jun 2004
- GrantedExtension
Demolition of existing single storey kitchen extension to rear — Construction of new two storey…
185, Collins Avenue, Dublin 9, D09 C3Y2
WEB1628/20Dublin CityLodged 15 Sept 2020
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