48, Thornhill Road, Mount Merrion, Co. Dublin
Demolition of a garage for a two-storey side extension and attic conversion.
D07B/0842 · Dun Laoghaire Rathdown County Council · Lodged 28 September 2007
- Reference
- D07B/0842
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 28 September 2007
Summary
AI-generatedThe works include removing the existing garage and outbuildings to build a two-storey side extension. It also features a new front bay window, changing the roof profile from hip to gable, and converting the attic for storage.
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
Modifications and extensions to dwelling incorporating new single storey bay window to existing living room & increase in width of front door to front elevation. Removal of existing single storey garage and outbuildings to side of dwelling & construction of 2 storey extension (ground floor = 19.3m. Sq. & 1st floor = 32.0m. Sq. ), increase in height of side gable wall to accommodate change in roof profile from side hipped roof to gable roof. Conversion of attic area (44.0m. Sq. ) for storage purpos...
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 |
|---|---|---|---|
| 7 Clonmore Rd, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 110 m |
| 98 Lr Kilmacud Rd, Stillorgan, Dublin | Jul 2025 | €1,187,000 | 125 m |
| 13 Redesdale Rd, Mount Merrion, Dublin | Sept 2025 | €850,000 | 183 m |
| 10 Redesdale Rd, Mount Merrion, Co Dublin | Jun 2026 | €1,220,000 | 185 m |
| 33 Clonmore Rd, Mount Merrion, Dublin | Apr 2026 | €1,425,000 | 191 m |
| 2 Redesdale Court, Redesdale Rd, Mount Merrion | Nov 2025 | €650,000 | 201 m |
| 44 Slieve Rua Dr, Kilmacud, Blackrock | Feb 2025 | €860,000 | 208 m |
| 17 Dale Close, Stillorgan | Nov 2025 | €920,000 | 211 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 received28 September 2007
- Decision issued22 November 2007
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
The development will consist of modifications and extensions to dwelling incorporating new single storey bay…
48, Thornhill Road, Mount Merrion, Co. Dublin
D08B/0019Dún Laoghaire–RathdownLodged 16 Jan 2008Extension
- GrantedAt this site
Permission for the construction of a single storey bay window with extended roof over porch; demolition of…
50, Thornhill Road, Mount Merrion, Co. Dublin
D14B/0230Dún Laoghaire–RathdownLodged 26 Jun 2014Extension
- GrantedAt this site
For the following development — (a) A single storey rear dining room rear dining room extension. (b) A two…
46, Thornhill Road, Mount Merrion, Co. Dublin
D05B/0470Dún Laoghaire–RathdownLodged 22 Jun 2005Extension
- GrantedAt this site
Single storey pitched roof extension to rear
52, Thornhill Road, Blackrock, Co. Dublin
D04B/0236Dún Laoghaire–RathdownLodged 29 Mar 2004Extension
- Granted30 m away
The development will consist of the conversion of the existing garage to T.V. room and utility room and the…
54, Thornhill Road, Mount Merrion, Co. Dublin
D05B/0240Dún Laoghaire–RathdownLodged 6 Apr 2005Extension
- Granted30 m away
Permission is sought for demolition of existing single storey flat roof extension to rear and side garage and…
42, Thornhill Road, Mount Merrion, Co. Dublin
D12A/0504Dún Laoghaire–RathdownLodged 18 Dec 2012Extension
- Granted40 m away
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 2025New dwelling
- Granted40 m away
Demolition of the single storey conservatory extension to rear and the garage and store to side to allow for…
40, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94K4X0
D23A/0302Dún Laoghaire–RathdownLodged 8 May 2023Extension
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
Relocation of front door and integration of part of existing porch into dwelling, conversion of existing…
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SD26B/0045WSouth DublinLodged 2 Feb 2026
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(A) The construction of a second storey extension of 17m2 above previously converted garage to the front of…
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D09A/0386Dún Laoghaire–RathdownLodged 16 Apr 2010
- GrantedExtension
Construction of a new two storey extension to the side; a single storey extension to the rear; attic…
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SD21B/0341South DublinLodged 14 Jun 2021
- GrantedExtension
Construction of two storey extension to side of existing dwelling comprising of family room and dining room…
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SD21B/0489South DublinLodged 15 Sept 2021
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SD17B/0371South DublinLodged 14 Nov 2017
- InvalidExtension
Additions, alterations and extension to the existing house, comprising of a proposed new extension over the…
25, Fortfield Avenue, Terenure, Dublin 6W.
SD06B/0112South DublinLodged 28 Feb 2006
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