21 Leopardstown Avenue, Blackrock, Co Dublin
Construction of a first-floor bedroom extension over an existing garage.
D15B/0362 · Dun Laoghaire Rathdown County Council · Lodged 28 September 2015
- Reference
- D15B/0362
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 28 September 2015
Summary
AI-generatedPermission is sought for a 13 square metre first-floor extension built above the existing garage. The new space will accommodate a bedroom with an en-suite and feature a matching pitched roof.
- Storey
- 1
- Floor area
- 13 m²
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
Permission for a first floor 13m2 extension above existing garage with a new pitched roof to match existing. Extension to provide a new bedroom with en-suite.
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.
Built — construction complete
A commencement notice records works starting on 10 October 2016.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 6 Leopardstown Drive, Blackrock, Co Dublin | Dec 2025 | €830,000 | 42 m |
| 20 Leopardstown Drive, Blackrock, County Dublin | Mar 2025 | €780,000 | 86 m |
| 5 Leopardstown Park, Stillorgan, Dublin | Dec 2025 | €910,000 | 102 m |
| 14 Leopardstown Park, Blackrock, Co Dublin | Feb 2026 | €1,041,755 | 107 m |
| 13 Leopardstown Park, Blackrock, Dublin | Mar 2025 | €860,000 | 114 m |
| 27 Leopardstown Dr, Blackrock, Dublin | Jun 2026 | €941,503 | 180 m |
| 41 Leopardstown Park, Blackrock, Dublin | Jan 2026 | €1,150,000 | 212 m |
| 39 Leopardstown Dr, Leopardstown, Dublin 18 | Aug 2025 | €1,000,000 | 246 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 2015
- Decision issued20 November 2015
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 retention is sought for part change of use from garage to utility room
21, Leopardstown Avenue, Blackrock, Co. Dublin
D12B/0012Dún Laoghaire–RathdownLodged 17 Jan 2012Retention
- GrantedAt this site
Permission is sought for retention of part change of use from garage to utility room
21, Leopardstown Avenue, Blackrock, Co. Dublin
D12B/0107Dún Laoghaire–RathdownLodged 3 Apr 2012Retention
- GrantedAt this site
Permission is sought for the raising of the existing original gable wall and forming a new dutch hip roof…
21 Leopardstown Avenue, Co.Dublin, A94 AX57
D22B/0212Dún Laoghaire–RathdownLodged 25 Apr 2022Extension
- GrantedAt this site
Permission sought for 2 storey extension to front of house including rooflights to side of new roof to…
21, Leopardstown Avenue, Blackrock, Co. Dublin
D10B/0361Dún Laoghaire–RathdownLodged 18 Aug 2010Extension
- GrantedAt this site
Planning permission for an extension to the rear of the existing dwelling including general refurbishment and…
19, Leopardstown Avenue, Blackrock, Co. Dublin
D10B/0059Dún Laoghaire–RathdownLodged 11 Feb 2010Extension
- Granted40 m away
Planning Permission for a rear dormer extension at attic level, to include a flat roof to dormer and…
10, Leopardstown Drive, Stillorgan, Co. Dublin A94 HC43
D22A/0308Dún Laoghaire–RathdownLodged 6 May 2022Extension
- Granted50 m away
The development will consist of: Attic conversion for storage with raised gable to the side and dormer window…
24 Leopardstown Avenue, Stillorgan, Co Dublin, A94H9Y6
D22A/0777Dún Laoghaire–RathdownLodged 13 Oct 2022Extension
- Granted50 m away
Permission for the conversion of the existing attic space for a bedroom and en-suite bathroom. To include a…
31 Leopardstown Avenue, Leopardstown, Co Dublin
D14B/0197Dún Laoghaire–RathdownLodged 6 Jun 2014Extension
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
Permission for a 13.5sq.m first floor pitched roof extension over the existing garage of the existing two…
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SD16B/0324South DublinLodged 5 Oct 2016
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4178/19Dublin CityLodged 10 Oct 2019
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D17B/0330Dún Laoghaire–RathdownLodged 11 Jul 2017
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Permission to convert and extend the existing garage and to construct a first floor bedroom extension with…
17, Dromawling Road, Beaumont, Dublin 9, D09XD37
3529/21Dublin CityLodged 20 Sept 2021
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Permission for construction of a first floor, pitched-roofed extension (45m2) on existing flat roof to…
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21315RoscommonLodged 8 Jun 2021
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Permission for the construction of a first floor extension to the side consisting of an en-suite bedroom and…
45 Whitethorn Road, Clonskeagh, Dublin 14
D14B/0358Dún Laoghaire–RathdownLodged 24 Oct 2014
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