35, Carysfort Downs, Blackrock, Co Dublin
Construction of a 10 sq.m single-storey extension to the rear of the house.
D21B/0417 · Dun Laoghaire Rathdown County Council · Lodged 10 August 2021
- Reference
- D21B/0417
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 10 August 2021
Summary
AI-generatedPermission is sought for a minor residential development consisting of a single-storey rear extension. The proposed extension will add 10 square metres of floor area to the existing dwelling.
- Floor area
- 10 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 is being sought for the construction of a single storey extension (10 sq. M) to the rear.
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 |
|---|---|---|---|
| 31 Carysfort Downs, Blackrock, Co Dublin | Sept 2025 | €1,210,000 | 62 m |
| 9 Ardagh Court, Blackrock, Dublin | Feb 2026 | €1,270,000 | 122 m |
| 54 Beechwood Court, Stillorgan, Dublin 18 | Oct 2025 | €470,000 | 136 m |
| 43 Carysfort Downs, Blackrock, Dublin | Aug 2025 | €1,400,000 | 139 m |
| 6 Farmleigh Avenue, Stillorgan, Co Dublin | Jan 2025 | €933,000 | 187 m |
| Apt 302 Block K, Beechwood Court, Stillorgan | Mar 2026 | €480,000 | 212 m |
| Apt 294 Block D, Beechwood Court, Stillorgan | Jun 2026 | €605,000 | 212 m |
| 50 Ardagh Park, Blackrock, Dublin | Jun 2025 | €855,000 | 214 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 received10 August 2021
- Decision issued28 September 2021
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
Permission for — Subdivision of existing dwelling to contain proposed granny flat
38 Carysfort Downs, Carysfort Avenue, Blackrock, Co Dublin
D17A/0090Dún Laoghaire–RathdownLodged 18 Apr 2017Extension
- GrantedAt this site
The development will consist/ consists of — Retention permission sought to retain the works including the…
38, Carysfort Downs, Carysfort Avenue, Blackrock, Dublin, A94C6C6
D25B/0338/WEBDún Laoghaire–RathdownLodged 13 Jun 2025Retention
- Granted50 m away
For retention of conversion of existing garage to a habital room and construction of pitched roof over the…
40, Carysfort Downs, Blackrock, Co. Dublin
D05B/0487Dún Laoghaire–RathdownLodged 24 Jun 2005Retention
- Granted60 m away
Modifications to existing house, new 2 storey extension to front, side and rear with single storey kitchen…
33, Farmleigh Close, Stillorgan, Dublin, A94X389
D23B/0217Dún Laoghaire–RathdownLodged 11 May 2023Extension
- Granted60 m away
Single storey conservatory to the rear of existing 2 storey detached house
31, Carysfort Downs, Blackrock, Co. Dublin
D04B/0060Dún Laoghaire–RathdownLodged 30 Jan 2004Retention
- Granted70 m away
A single storey extension sized 2.5 sq.m. approximately, to the front and a two storey extension sized…
31, Farmleigh Close, Stillorgan, Co. Dublin
D06B/0161Dún Laoghaire–RathdownLodged 27 Feb 2006Extension
- Granted70 m away
Permission for the replacement of an existing conservatory on the south west facade with a 42m2 single storey…
Community House, St John Of God Hospital, Stillorgan, Co Dublin
D16A/0459Dún Laoghaire–RathdownLodged 27 Jun 2016Commercial
- Granted80 m away
Garage conversion at side, single storey extension at front with tiled canopy and new hall door and screen,…
29, Carysfort Downs, Blackrock, Co. Dublin
D08B/0846Dún Laoghaire–RathdownLodged 19 Dec 2008Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- InvalidExtension
Permission is sought for single storey extension (10 sq.m) to rear of existing house
3a, Allen Park Drive, Stillorgan, Co. Dublin
D17B/0266Dún Laoghaire–RathdownLodged 29 May 2017
- GrantedExtension
Planning permission is sought for single storey extension (10 sqm) to rear of existing house
3A, Allen Park Drive, Stillorgan, Co. Dublin
D17B/0352Dún Laoghaire–RathdownLodged 27 Jul 2017
- GrantedExtension
Permission is sought for the construction of a single-storey domestic extension to the rear
14, Orby Park, The Gallops, Leopardstown, Dublin 18
D12B/0405Dún Laoghaire–RathdownLodged 21 Dec 2012
- GrantedExtension
Permission is sought for a single storey extension to the rear
17 Cruise Park Avenue, Tyrellstown, Dublin 15, D15 EY8X
FW25A/0313FingalLodged 25 Jul 2025
- GrantedExtension
Permission is sought for a new single storey extension at rear
30, Stradbrook Road, Blackrock, Co Dublin
D07B/0350Dún Laoghaire–RathdownLodged 19 Apr 2007
- GrantedExtension
Permission is sought for the construction of a single storey extension to the rear and ancillary works
4 Southwinds, Ulverton Road, Dalkey, Co. Dublin A96FT21
D21B/0485Dún Laoghaire–RathdownLodged 13 Sept 2021
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