17, Coolnevaun, Stillorgan, Blackrock, Dublin, A94Y8N4
First-floor extension, roof modifications, and an attic conversion with a rear dormer in Stillorgan.
D25B/0473 · Dun Laoghaire Rathdown County Council · Lodged 26 August 2025
- Reference
- D25B/0473
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 26 August 2025
Summary
AI-generatedThe project involves an extension, refurbishment, and attic conversion of the property. It includes the partial demolition of external walls and the existing hipped roof to construct a first-floor extension and add a flat roof dormer to the rear.
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
For an extension, refurbishment and attic conversion. Partial demolition of external walls on the first floor and the partial demolition of the existing hipped roof to the side of the property. We intend to erect (a) an extension on the first floor of the property. (b) extend the roof over the new extension. (c) add a flat roof dormer to the rear roof of the property.
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 |
|---|---|---|---|
| 15 Coolnevaun, Off Upper Kilmacud Rd, Stillorgan | Nov 2025 | €1,245,000 | 14 m |
| 10 Coolnevaun, Stillorgan, Dublin | Nov 2025 | €912,500 | 60 m |
| 3 Kilmacud Park, Stillorgan, Dublin | Sept 2025 | €950,000 | 172 m |
| 38 Marshan Court, Stillorgan, Dublin | Feb 2025 | €678,000 | 202 m |
| 129 Wesbury, Stillorgan, Dublin | Jan 2025 | €800,000 | 228 m |
| 5 Allen Park Dr, Stillorgan, Dublin | Feb 2026 | €881,000 | 238 m |
| 35 Allen Park Rd, Stillorgan, Dublin | Mar 2026 | €860,000 | 260 m |
| 10 Marsham Court, Kilmacud Rd Upper, Stillorgan | Sept 2025 | €792,000 | 263 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 received26 August 2025
- Decision due20 October 2025
- Decision issued16 October 2025
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Compliance submissionAt this site
Compliance with Condition No.2 of Reg Ref No. D25B/0473
17, Coolnevaun, Stillorgan, Blackrock, Dublin, A94Y8N4
D25B/0473/C1Dún Laoghaire–RathdownLodged 20 Nov 2025Other
- Compliance submissionAt this site
Compliance with Condition No.2 of Reg Ref No. D25B/0473
17, Coolnevaun, Stillorgan, Blackrock, Dublin, A94Y8N4
D25B/0473/C2Dún Laoghaire–RathdownLodged 5 Feb 2026Other
- GrantedAt this site
Permission for development. The proposed development will consist of minor alterations to the existing front…
17, Coolnevaun, Stillorgan, Co. Dublin
D19B/0071Dún Laoghaire–RathdownLodged 13 Feb 2019Alterations
- Granted40 m away
Garage conversion to bedroom first floor extension over garage and single storey extension to front and…
25, Coolnevaun, Kilmacud Road Upper, Stillorgan, Co. Dublin
D07B/0541Dún Laoghaire–RathdownLodged 14 Jun 2007Extension
- Granted40 m away
First floor front extension over converted garage. Single storey rear extension and first floor rear window.…
9, Coolnevaun, Stillorgan, Co. Dublin.
D08B/0567Dún Laoghaire–RathdownLodged 30 Jul 2008Extension
- Granted50 m away
Permission for the conversion of an existing garage to include a home office and utility room (13 m2), a…
18 Coolnevaun, Stillorgan, Co Dublin
D17B/0356Dún Laoghaire–RathdownLodged 2 Aug 2017Extension
- Granted70 m away
Alterations to the existing roof and storage space to include the building up of the existing hip roof to new…
3 Coolnevaun, Kilmacud Road Upper, Stillorgan, Co. Dublin, A94E1W4
D24A/0720Dún Laoghaire–RathdownLodged 11 Sept 2024Alterations
- Invalid70 m away
Conversion of his attic to non-habitable space, and a bathroom, including a dormer window to the rear, a…
3, Coolnevaun, Stillorgan, Dublin, A94E1W4
D24B/0551/WEBDún Laoghaire–RathdownLodged 23 Dec 2024Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- RefusedExtension
We intend to apply for planning permission for an extension, refurbishment and and attic conversion. The…
40, Wilson Road, Mount Merrion, County Dublin, A94 H2Y9
D25B/0314Dún Laoghaire–RathdownLodged 3 Jun 2025
- GrantedExtension
The extension, refurbishment and attic conversion. The development will consist of the partial demolition of…
40, Wilson Road, Mount Merrion, Blackrock, Dublin, A94H2Y9
D25B/0472Dún Laoghaire–RathdownLodged 25 Aug 2025
- GrantedExtension
A) Demolition of existing single story pitched roof extension to rear to allow for proposed single story…
31, Highridge Green, Kilmacud, Blackrock, Dublin, A94E165
D24B/0307/WEBDún Laoghaire–RathdownLodged 5 Jul 2024
- RefusedExtension
Permission for an extension and refurbishment. The development will consist of the demolition of some…
2 Glenalua Heights, Killiney, County Dublin, A96 P5F1
D22B/0253Dún Laoghaire–RathdownLodged 18 May 2022
- GrantedExtension
For the demolition of the existing single-storey rear extension, the construction of a new single-storey rear…
101 Mount Prospect Drive, Clontarf, Dublin 3
3645/24Dublin CityLodged 7 May 2024
- GrantedExtension
Demolition of an existing single-storey flat roof extension to the side of an existing two-storey dwelling…
68, Dodder Park Road, Rathfarnham, Dublin 14
SD08B/0723South DublinLodged 23 Oct 2008
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.