2 Rowanbyrn, Blackrock, Co. Dublin, A94X866
Roof extensions with front and rear dormers, a rear kitchen extension, and conversion of the garage.
D25B/0665 · Dun Laoghaire Rathdown County Council · Lodged 28 November 2025
- Reference
- D25B/0665
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 28 November 2025
Summary
AI-generatedThe project includes extending the roof to add front and rear dormer windows, a rear kitchen and living area extension, and converting the existing garage into a family room with a new front window.
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
A) extension of the existing roof to form new dormer style window extensions to front and rear roof slope to match existing dormers, and no. 1 ventilated roof light to the front roof slope; b) kitchen/living area extension at rear and conversion of the garage to a family room with double glazed window to front, and all ancillary works.
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 |
|---|---|---|---|
| 23 Rowanbyrn, Blackrock, Dublin | Mar 2026 | €772,000 | 63 m |
| 61 Mount Albany, Blackrock, Dublin | Dec 2025 | €1,100,000 | 68 m |
| 59 Mount Albany, Blackrock, Dublin | Mar 2026 | €906,000 | 69 m |
| 19 Brookville Park, Blackrock, Co Dublin | Jul 2025 | €886,918 | 78 m |
| 70 Mount Albany, Blackrock, Dublin | Dec 2025 | €800,000 | 115 m |
| 50 Rowanbyrn, Blackrock, Dublin | Jul 2025 | €825,000 | 135 m |
| 29a Brookville Park, Blackrock, Co Dublinnot full market price | Jan 2025 | €392,000 | 181 m |
| 48 Marian Park, Blackrock, County Dublin | Feb 2026 | €710,000 | 192 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 November 2025
- Decision due30 January 2026
- Decision issued26 January 2026
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
Single storey extension to side
3, Rowanbyrn, Blackrock, Co. Dublin.
D04B/0844Dún Laoghaire–RathdownLodged 29 Nov 2004Extension
- GrantedAt this site
To to the northeast garden of 'Valambrosa' at the corner of Rowanbyrn and Brookville Park. The development…
Valambrosa, 1, Rowanbyrn, Blackrock, Co. Dublin.
D06A/1387Dún Laoghaire–RathdownLodged 27 Feb 2007New dwelling
- GrantedAt this site
For first floor dormer bathroom and extension to front and widened existing vehicular entrance
14, Brookville Park, Blackrock, Co. Dublin
D05A/1424Dún Laoghaire–RathdownLodged 3 Nov 2005Extension
- Refused30 m away
Permission is sought to renovate and extend a first floor bed room to front elevation including raising a…
13, Brookville Park, Deansgrange, Blackrock, Co Dublin
D21B/0335Dún Laoghaire–RathdownLodged 1 Jul 2021Extension
- Granted30 m away
Permission is sought to renovate and extend a first floor bed room to front elevation including raising a…
13, Brookville Park, Blackrock, Co Dublin
D22B/0187Dún Laoghaire–RathdownLodged 11 Apr 2022Extension
- Granted40 m away
Permission is sought for demolition of existing pitched roof to rear of house and construction of first floor…
15, Brookville Park, Blackrock, Co Dublin
D20B/0373Dún Laoghaire–RathdownLodged 17 Nov 2020Extension
- Granted40 m away
Permission for retention of timber fence erected above existing front and side site boundary wall
25, Rowanbyrn, Deansgrange, Co. Dublin
D13B/0093Dún Laoghaire–RathdownLodged 19 Mar 2013Retention
- Granted40 m away
Planning permission to demolish rear store, new internal and external ground floor alterations, including…
25, Rowanbyrn, Blackrock, Co. Dublin
D09B/0391Dún Laoghaire–RathdownLodged 25 Sept 2009Alterations
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
Alterations and addition to existing private dwelling house, consisting of the conversion of the existing…
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Single storey kitchen and utility extension to rear of the dwelling, replacement of the flat roof on 2nd…
16, Butterfield Drive, Rathfarnham, Dublin 14.
SD04B/0595South DublinLodged 11 Nov 2004
- GrantedExtension
Extension and alterations to existing dwelling comprising of; (a) construction of a storey and a half dormer…
Boycestown, Carrigaline, ,
104641corkLodged 22 Mar 2010
- GrantedExtension
To replace existing extension, store and garage to rear with dormer extension to provide…
2, Craigmore Gardens, Blackrock, Co. Dublin
D06B/0151Dún Laoghaire–RathdownLodged 23 Feb 2006
- GrantedExtension
Extension of existing roof to side, new dormer window to front, extension of existing rear dormer, conversion…
14, Limekiln Drive, Dublin 12
SD18B/0179South DublinLodged 26 Apr 2018
- GrantedExtension
The construction of a 2 storey domestic extension to the side and rear of the existing dwelling including…
32, Alma Road, Monkstown, Co. Dublin
D08B/0516Dún Laoghaire–RathdownLodged 8 Jul 2008
Community
Discussion
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