38 Carysfort Downs, Carysfort Avenue, Blackrock, Co Dublin
Subdivision of a house to create a granny flat, a three-storey rear extension, a first-floor side extension, and an attic conversion.
D17A/0090 · Dun Laoghaire Rathdown County Council · Lodged 18 April 2017
- Reference
- D17A/0090
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 18 April 2017
Summary
AI-generatedThe development at 38 Carysfort Downs involves subdividing the existing dwelling to accommodate a granny flat. It also includes a three-storey extension to the rear, a first-floor side extension over the existing single-storey structure, and an attic conversion with dormer windows to the front and rear.
- Storeys
- 3
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
- Subdivision of existing dwelling to contain proposed granny flat
- Proposed three storey extension to the rear
- Proposed new first floor side extension over existing single storey
- Proposed attic conversion with proposed dormers to the front and rear, roof lights to the side and rear of the existing roof, internal alterations, amendments to all elevations and all associates site 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.
Built — construction complete
A commencement notice records works starting on 26 February 2018.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 31 Carysfort Downs, Blackrock, Co Dublin | Sept 2025 | €1,210,000 | 55 m |
| 9 Ardagh Court, Blackrock, Dublin | Feb 2026 | €1,270,000 | 108 m |
| 43 Carysfort Downs, Blackrock, Dublin | Aug 2025 | €1,400,000 | 127 m |
| 54 Beechwood Court, Stillorgan, Dublin 18 | Oct 2025 | €470,000 | 127 m |
| 6 Farmleigh Avenue, Stillorgan, Co Dublin | Jan 2025 | €933,000 | 195 m |
| 50 Ardagh Park, Blackrock, Dublin | Jun 2025 | €855,000 | 199 m |
| Apt 302 Block K, Beechwood Court, Stillorgan | Mar 2026 | €480,000 | 211 m |
| Apt 294 Block D, Beechwood Court, Stillorgan | Jun 2026 | €605,000 | 211 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 received18 April 2017
- Decision issued10 May 2017
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
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
- GrantedAt this site
Permission is being sought for the construction of a single storey extension (10 sq.M) to the rear
35, Carysfort Downs, Blackrock, Co Dublin
D21B/0417Dún Laoghaire–RathdownLodged 10 Aug 2021Extension
- Granted40 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
- Granted50 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
- 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
- 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
A single storey 2.4 sq.m. front porch
26, Carysfort Downs, Blackrock, Dublin
D04B/0400Dún Laoghaire–RathdownLodged 20 May 2004Retention
- Granted70 m away
Permission for the demolition of existing single storey extensions to the side and rear and the construction…
26, Carysfort Downs, Blackrock, Co. Dublin
D09B/0375Dún Laoghaire–RathdownLodged 1 Sept 2009Extension
Related developments
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Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
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