223, Rochestown Avenue, Dun Laoghaire, Co. Dublin
Retention of a garage conversion to a granny flat and a first-floor extension in Dun Laoghaire.
D05A/0948 · Dun Laoghaire Rathdown County Council · Lodged 25 July 2005
- Reference
- D05A/0948
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 25 July 2005
Summary
AI-generatedRetention permission is sought for the change of use of an existing garage to a granny flat. The application also seeks to retain a first-floor extension to the side and rear of the property with a ridge height of 8.412 meters.
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
Retention of development consisting of change of use of garage to granny flat and retention of first floor extension to the side and rear with a ridge height of 8.412 m.
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 |
|---|---|---|---|
| 1 Glenview, Rochestown Avenue, Dun Laoghaire | Feb 2026 | €875,000 | 70 m |
| 5 Glenview, Rochestown Ave, Dun Laoghaire | Nov 2025 | €1,000,000 | 77 m |
| 2 Drumkeen Manor, Rochestown Ave, Dun Laoghaire | Apr 2026 | €626,000 | 105 m |
| 22 Drumkeen Manor, Rochestown Ave, Killiney | Jan 2025 | €675,000 | 135 m |
| 14 Drumkeen Dr, Off Rochestown Ave, Dun Laoghaire | Jan 2026 | €730,000 | 150 m |
| 84 Beechwood Lawn, Rochestown Ave, Dun Laoghaire | Aug 2025 | €745,500 | 172 m |
| 12 Thomastown Rd, Killiney, Dublin | Apr 2026 | €785,000 | 188 m |
| 176 Rochestown Ave, Dun Laoghaire, Dublin | Mar 2026 | €670,000 | 198 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 received25 July 2005
- Decision issued16 September 2005
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
First floor extension to side and change of use of garage to study and utility room. [LOCATION] 223…
223 Rochestown Avenue, Dun Laoghaire, Co. Dublin.
D02B/0215Dún Laoghaire–RathdownLodged 16 Apr 2002Extension
- GrantedAt this site
Attic conversion with dormer roof to the rear — 4 no. roof lights to the front of existing roof and…
219, Rochestown Avenue, Dun Laoghaire, Co. Dublin
D05B/0311Dún Laoghaire–RathdownLodged 14 Sept 2005Extension
- Granted40 m away
Subdivision of the existing semi-detached dwelling house and site, into 2 separate dwelling units, involving…
11 Beechwood Lawn, Glenageary, Co. Dublin.
D02A/0107Dún Laoghaire–RathdownLodged 18 Feb 2002New dwelling
- Granted50 m away
Permission is sought for the construction of; a) a ground floor kitchen extension to the rear, b) a ground…
13, Beechwood Lawn, Dun Laoghaire, Dublin
D07B/0416Dún Laoghaire–RathdownLodged 10 May 2007Extension
- Granted50 m away
Permission for development of a single storey extension to the front elevation and external thermal…
6, Beechwood Lawn, Dun Laoghaire, Co Dublin
D13B/0073Dún Laoghaire–RathdownLodged 5 Mar 2013Extension
- Granted80 m away
Permission is sought for a first floor extension to existing boiler house at side of house
Drumkeen House, Rochestown Avenue, Dun Laoghaire, Co Dublin
D07B/0449Dún Laoghaire–RathdownLodged 17 May 2007Extension
- Granted80 m away
(1) Construction of a single storey 2 bedroom gate lodge at the main entrance gate to Drumkeen House and all…
Drumkeen House, Rochestown Avenue, Dun Laoghaire, Co Dublin
D07A/1481Dún Laoghaire–RathdownLodged 22 Jan 2008New dwelling
- Granted80 m away
Permission is sought for — Construction of a first floor en-suite to the rear of Drumkeen House
Drumkeen House, Rochestown Avenue, Dun Laoghaire, Co Dublin
D08B/0289Dún Laoghaire–RathdownLodged 18 Apr 2008Extension
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.
- Awaiting decision
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