56, Thornhill Road, Mount Merrion, Co. Dublin
Demolition of a garage and construction of a two-storey side extension, rear sunroom, attic conversion, and widened driveway entrance.
D08A/0742 · Dun Laoghaire Rathdown County Council · Lodged 25 June 2008
- Reference
- D08A/0742
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 25 June 2008
Summary
AI-generatedThe development will consist of a new ground floor front bay window and porch. It includes the demolition of the existing garage to build a two-storey side extension, a rear sunroom, an attic conversion for a playroom/study, and the widening of the vehicular entrance.
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
The development will consist of (a) a proposed ground floor bay window to front of house with hipped roof over bay window and porch area. (b) existing garage to be demolished and a proposed two storey extension to be constructed to the side of house with pitched roof over and roof light to the side. Extension will have new front entrance for side access. (c) proposed sunroom to the rear of house. (d) proposed attic conversion to playroom/study. (e) widening of existing vehicular entrance...
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 | 104 m |
| 7 Clonmore Rd, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 119 m |
| 10 Redesdale Rd, Mount Merrion, Co Dublin | Jun 2026 | €1,220,000 | 143 m |
| 13 Redesdale Rd, Mount Merrion, Dublin | Sept 2025 | €850,000 | 154 m |
| 2 Redesdale Court, Redesdale Rd, Mount Merrion | Nov 2025 | €650,000 | 159 m |
| 44 Slieve Rua Dr, Kilmacud, Blackrock | Feb 2025 | €860,000 | 179 m |
| 17 Dale Close, Stillorgan | Nov 2025 | €920,000 | 226 m |
| 33 Clonmore Rd, Mount Merrion, Dublin | Apr 2026 | €1,425,000 | 229 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 received25 June 2008
- Decision issued19 August 2008
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- WithdrawnAt this site
(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
- GrantedAt this site
Permission is sought for retention of alterations to elevations permitted under planning Reg.Ref. No.D08A/0742
56, Thornhill Road, Mount Merrion, Co. Dublin
D09A/0906Dún Laoghaire–RathdownLodged 21 Dec 2009Retention
- GrantedAt this site
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
- 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
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
- Invalid40 m away
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
- Granted40 m away
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
- Granted40 m away
Demolition of existing single storey extension to side, utility room to rear and chimney. The construction of…
64, Thornhill Road, Mount Merrion, Dublin, A94T6T0
D23B/0062Dún Laoghaire–RathdownLodged 17 Feb 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.
- WithdrawnExtension
(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 2008
- GrantedExtension
The development will consist of — Demolition of single storey extension, to the side and rear and existing…
115 St Helens Road, Booterstown, Blackrock, Co. Dublin, A94FN82
D25A/0180/WEBDún Laoghaire–RathdownLodged 7 Mar 2025
- GrantedExtension
Permission for development. The development will consist of: The demolition of existing garage. Construction…
65, Woodbine Road, Booterstown, Co. Dublin
D14A/0083Dún Laoghaire–RathdownLodged 20 Jun 2014
- GrantedExtension
Permission for development. The proposed development will consist of a) removal of existing garage to side,…
67, Granville Park, Blackrock, Co Dublin, A94TD28
D21A/0689Dún Laoghaire–RathdownLodged 21 Feb 2022
- GrantedExtension
Permission is sought for development which will consist of — Demolition of single storey detached garage…
15, Springhill Park, Killiney, Co. Dublin
D12A/0063Dún Laoghaire–RathdownLodged 8 Jun 2012
- GrantedExtension
The development will consist of: (i) demolition of the existing single-storey garage to the west (side) of…
18, Greenfield Road, Mount Merrion, Dublin, A94A0W7
D26B/0196/WEBDún Laoghaire–RathdownLodged 2 Apr 2026
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