18, Caryfort Downs, Blackrock, Co Dublin
First-floor side extension and single-storey rear extension to a detached house.
D21B/0344 · Dun Laoghaire Rathdown County Council · Lodged 8 July 2021
- Reference
- D21B/0344
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 8 July 2021
Summary
AI-generatedThe development comprises a new 25.6 sqm first-floor extension over the existing single-storey side structure for a master bedroom. It also includes a 15.9 sqm single-storey rear extension for a TV room.
- Floor area
- 42 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 sought for extensions and alterations to an existing part two/part single storey detached dwelling. The works will comprise of the following: a) construction of a new first floor extension over the existing single storey at the side of the house, the use of which will be as a master bedroom and en-suite (25.6 sq. M) b) construction of single storey extension to the rear of the property. The use of which will be as a tv room (15.9 sq. M) c) construction of a new single storey garde...
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 |
|---|---|---|---|
| 43 Carysfort Downs, Blackrock, Dublin | Aug 2025 | €1,400,000 | 71 m |
| 50 Ardagh Park, Blackrock, Dublin | Jun 2025 | €855,000 | 99 m |
| 10 Carysfort Downs, Blackrock, Dublin | Dec 2025 | €995,000 | 111 m |
| 2 Ardagh Grove, Blackrock, Dublin | Oct 2025 | €795,000 | 119 m |
| 9 Ardagh Court, Blackrock, Dublin | Feb 2026 | €1,270,000 | 130 m |
| Sea Glimpse, 6 Carysfort Downs, Blackrock | Mar 2025 | €1,695,000 | 177 m |
| 39 Ardagh Park, Blackrock, Dublin | Mar 2025 | €765,000 | 187 m |
| 31 Carysfort Downs, Blackrock, Co Dublin | Sept 2025 | €1,210,000 | 190 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 received8 July 2021
- Decision issued26 August 2021
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Granted30 m away
Second storey extension to front and side incorporating a garage conversion, single storey extension at rear,…
20, Carysfort Downs, Blackrock, Co. Dublin
D07B/0974Dún Laoghaire–RathdownLodged 4 Dec 2007Extension
- Granted40 m away
Demolition of single storey pitched roof over garage and chimney at first floor level to front, and removal…
20, Carysfort Downs, Blackrock, Co. Dublin
D05B/0420Dún Laoghaire–RathdownLodged 7 Jun 2005Extension
- Granted40 m away
Permission is sought for retention of existing front porch, existing ground floor gable window at side, rear…
73, Ardagh Park, Blackrock, Co Dublin
D09B/0122Dún Laoghaire–RathdownLodged 27 Mar 2009Retention
- Granted40 m away
Permission is sought for demolition of existing garage, erection of single storey extension at side and rear…
73, Ardagh Park, Blackrock, Co. Dublin
D09B/0135Dún Laoghaire–RathdownLodged 3 Apr 2009Extension
- Granted40 m away
Front porch, single storey extension at side and rear, rear dormer extension, attic conversion with…
73 Ardagh Park, Blackrock, Co. Dublin.
D02B/0293Dún Laoghaire–RathdownLodged 9 May 2002Extension
- Awaiting decision40 m away
(A) Demolition of existing c.46sqm single-storey rear extension; (B) Construction of a c.82 sqm two-storey…
Woodlawn, 47 Carysfort Downs, Blackrock, Co. Dublin, A94F983
D26B/0402/WEBDún Laoghaire–RathdownLodged 14 Jul 2026Extension
- Granted50 m away
We intend to apply for planning permission for extension and alteraton to existing roof profile to allow for…
45, Carysfort Downs, Blackrock, Co. Dublin
D25B/0044Dún Laoghaire–RathdownLodged 30 Jan 2025Extension
- Granted50 m away
Internal alterations to construct first floor extension to side, and replace single storey front flat roof…
45, Carysford Downs, Blackrock, Co. Dublin.
D05B/0513Dún Laoghaire–RathdownLodged 4 Jul 2005Extension
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 to construct an extension to the rear and eastern elevation to existing dwelling. The extension…
1 Woodpark, Ballinteer Avenue, Ballinteer, Dublin 16
D17B/0365Dún Laoghaire–RathdownLodged 4 Aug 2017
- GrantedExtension
Permission is sought for development consisting of the modification of existing detached single storey room…
108, Churchtown Road Lower, Dublin 14
D13A/0322Dún Laoghaire–RathdownLodged 27 Jun 2013
- GrantedExtension
Permission is sought for the construction of a new single storey extension to the rear (24.96m2); and a two…
33, Roebuck Castle, Clonskeagh, Dublin 14
D17B/0163Dún Laoghaire–RathdownLodged 4 Apr 2017
- GrantedExtension
Permission is sought to construct new single storey extension with pitched roof to rear of existing house,…
20, Ludford Park,Dundrum, Dublin 16
D09B/0102Dún Laoghaire–RathdownLodged 12 Mar 2009
- GrantedExtension
Permission for the following: A: Construction of a proposed single storey extension to west / side elevation…
Barrybeg , Kiltoom , Athlone
226RoscommonLodged 7 Jan 2022
- GrantedExtension
Permission for the alterations and extension of the existing two storey attached semi-detached dwelling to…
9, Woodlands Drive, Stillorgan, Co. Dublin
D19A/0713Dún Laoghaire–RathdownLodged 13 Dec 2019
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