154, Rochestown Avenue, Dun Laoghaire, Dublin, A96TW54
Attic conversion with a rear dormer window, new front and side windows, and replacement of timber cladding.
D26B/0277/WEB · Dun Laoghaire Rathdown County Council · Lodged 6 May 2026
- Reference
- D26B/0277/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 6 May 2026
Summary
AI-generatedThe development consists of an attic conversion featuring a rear dormer roof extension, a new gable window, and two front rooflights. It also includes a new first-floor front window and replacing existing timber cladding with a rendered finish.
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
- ) an attic conversion including a rear dormer roof extension, a new window to the gable wall, 2no. Rooflights to the front elevation, new internal access stairs, and
- ) the addition of a new first floor window to the front elevation; and the replacement of the existing section of ship-lapped timber cladding to the front elevation with a rendered finish to match the existing dwelling finishes, together with all associated 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.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 148 Rochestown Ave, Dun Laoghaire, Dublin | Nov 2025 | €560,000 | 29 m |
| 38 Granitefield Manor, Rochestown Ave, Killiney | May 2026 | €370,000 | 42 m |
| 41 The Ogham, Granitefield Manor, Rochestown Ave | Jul 2025 | €465,000 | 42 m |
| 81 The Gallan, Grainite Field Manor, Rochestown Ave | Apr 2026 | €422,000 | 77 m |
| 50 The Gallan, Granitefield Manor, Rochestown Ave | Mar 2026 | €388,000 | 77 m |
| Apt 43, The Gallen, Granitefield Manor | May 2026 | €365,000 | 77 m |
| 7 Eaglewood, Rochestown Ave, Dun Laoghaire | Sept 2025 | €415,000 | 79 m |
| 21 The Mews, Granitefield, Rochestown Ave Dun Laoghaire | Dec 2025 | €382,500 | 84 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 received6 May 2026
- Decision due2 July 2026
- Decision issued29 June 2026
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Refused40 m away
Timber boundary fencing and raised, rendered and capped blockwork boundary walls to front and side
146 & 146A, Rochestown Avenue, Dun Laoghaire, Co. Dublin
D08B/0631Dún Laoghaire–RathdownLodged 22 Aug 2008Retention
- Granted40 m away
Permission is sought for the construction of a two storey detached 3-bed family dwelling and associated site…
146, Rochestown Avenue, Dun Laoghaire, Co. Dublin
D07A/0657Dún Laoghaire–RathdownLodged 20 Sept 2007New dwelling
- Granted50 m away
1 no. 2 storey, 3 bedroom, semi detached dwelling house (attached to proposed apartment block which is the…
5 & 7 Johnstown Road, with access from Rochestown Avenue, Dun Laoghaire, Co. Dublin
D03A/0989Dún Laoghaire–RathdownLodged 4 Feb 2004New dwelling
- Granted50 m away
28 no. apartments in 3 no. blocks (2 storey to the rear and 3 storey to the front) comprising: 14 no. 2…
Rear of No's 1 to 11, & 15 to 21, Johnstown Road, Dun Laoghaire, Co. Dublin
D03A/0910Dún Laoghaire–RathdownLodged 23 Dec 2003Apartments
- Granted60 m away
For retention permission to approved 2 storey, 3 bedroom semi-detached house (Reg.Ref. D03A/0989) consisting…
9, Granitefield Mews, Rochestown Avenue, Dun Laoghaire, Co. Dublin(rear 5/7 Johnstown Road).
D05A/1122Dún Laoghaire–RathdownLodged 15 Nov 2005Retention
- Granted70 m away
Permission for retention of 3 no. 2 bed apartments located on the lower ground floor of Block B and…
Apts. 85, 86 & 87 Block B Granitefield Manor, Rochestown Avenue, Dun Laoghaire, Co Dublin
D14A/0509Dún Laoghaire–RathdownLodged 8 Aug 2014Retention
- Granted70 m away
Child care facility/creche at lower ground floor level of Block B as per condition no. 5 of PL06D.126709
Granitefield Manor, Rochestown Avenue, Dun Laoghaire, Co Dublin
D03A/0103Dún Laoghaire–RathdownLodged 4 Feb 2003Commercial
- Granted70 m away
For an extension approximately 190 sq.m. to the rear of the previously approved Reg.Ref. D07A/0001 at the…
The Renault Centre Car Sales Showroom, Rochestown Avenue, Dun Laoghaire, Co Dublin
D07A/1127Dún Laoghaire–RathdownLodged 10 Dec 2007Commercial
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