17, Somerton, Rochestown Avenue, Dun Laoghaire, Dublin, A96X3P0
Attic conversion with a rear dormer window and internal alterations.
D25B/0379/WEB · Dun Laoghaire Rathdown County Council · Lodged 4 July 2025
- Reference
- D25B/0379/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 4 July 2025
Summary
AI-generatedThe application proposes an attic conversion with a new dormer window to the rear of an existing mid-terrace, two-storey dwelling. Internal alterations will also be carried out to accommodate a new attic staircase.
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 attic conversion and dormer window to the rear; internal alterations for new attic stairs along with all necessary and associated site works to an existing mid-terrace two storey dwelling.
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 |
|---|---|---|---|
| 82 Granitefield Manor, Rochestown Avenue, Dun Laoghaire | May 2025 | €355,000 | 180 m |
| 88 Sallynoggin Park, Dun Laoghaire, Dublin | Jan 2026 | €575,000 | 187 m |
| 64 Sallynoggin Park, Sallynoggin, Dublin | Dec 2025 | €465,000 | 208 m |
| 5a Sefton, Rochestown Ave, Dun Laoghaire | Jul 2026 | €860,000 | 241 m |
| 54 Sefton, Rochestown Ave, Dun Laoghaire | May 2026 | €980,000 | 256 m |
| 133 Orourke Park, Sallynoggin, Dublin | Nov 2025 | €590,000 | 272 m |
| 12 Sallynoggin Rd Upper, Dun Laoghaire, Dublin | Mar 2026 | €575,000 | 277 m |
| 7 Sefton, Rochestown Ave, Dun Laoghaire | Oct 2025 | €1,008,000 | 278 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 received4 July 2025
- Decision due28 August 2025
- Decision issued27 August 2025
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- RefusedAt this site
Permission is sought for a rear first floor extension and attic conversion including raising of existing…
17, Somerton, Dun Laoghaire, Co. Dublin, A96X3P0
D22B/0457Dún Laoghaire–RathdownLodged 28 Oct 2022Extension
- Granted50 m away
New detached garage with storage area over, total floor area 45.34 m2 together with relocated vehicular…
Somerton Lodge, Rochestown Avenue, Co. Dublin
D03A/0611Dún Laoghaire–RathdownLodged 2 Jan 2004Extension
- Granted60 m away
Improvement of facilities/amenities (paths, playgrounds, pitch improvements, clubhouses)
Sallynoggin Playing Fields, Sallynoggin, Co. Dublin.
PC/07/06Dún Laoghaire–RathdownLodged 3 Apr 2006Infrastructure
- Granted80 m away
Housing Development
Woodpark,, Sallynoggin,, Co. Dublin.
PC/H/02/22Dún Laoghaire–RathdownLodged 16 Mar 2022
- Granted90 m away
Construction of 14 no. new units consisting of 12 x 1 bed and 2 x 2 bed
Sallynoggin Road Upper, Sallynoggin, Co Dublin
PC/H/02/15Dún Laoghaire–RathdownLodged 3 Mar 2015Apartments
- Not exempt — permission needed110 m away
We intent to construct a modular building, which will consist of 4 changing rooms with showers, a toilet…
Sallynoggin Playing Fields, Sallynoggin, Co. Dublin.
REF18825Dún Laoghaire–RathdownLodged 2 Dec 2025Other
- Refused140 m away
Permission is sought for the construction of a single storey extension to the front and side of the existing…
Rochestown Motors, Rochestown Avenue, Dun Laoghaire, Co. Dublin.
D07A/1158Dún Laoghaire–RathdownLodged 13 Aug 2007Commercial
- Withdrawn140 m away
A) Demolition of existing car showroom, workshops, and boundary walls; b) Development of a new car showrooms…
Rochestown Motors, Rochestown Avenue, Dun Laoghaire, Co. Dublin.
D05A/0710Dún Laoghaire–RathdownLodged 16 Sept 2005Commercial
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- RefusedExtension
Permission is sought for a rear first floor extension and attic conversion including raising of existing…
17, Somerton, Dun Laoghaire, Co. Dublin, A96X3P0
D22B/0457Dún Laoghaire–RathdownLodged 28 Oct 2022
- InvalidExtension
Permission for an attic conversion with new dormer window to the rear of the existing roof of the existing…
154, Corke Abbey, Bray, Co. Dublin
D24B/0454Dún Laoghaire–RathdownLodged 24 Oct 2024
- RefusedExtension
Permission for development consisting of attic conversion including dormer window to rear and side of…
56, Mount Eagle View, Leopardstown Heights, Dublin 18
D13B/0154Dún Laoghaire–RathdownLodged 9 May 2013
- GrantedExtension
PERMISSION for an attic conversion with flat roofed dormer window to the rear of the existing two storey…
1 Cabra Grove, Cabra East, Dublin 7, D07 XR83
3138/24Dublin CityLodged 2 Feb 2024
- InvalidExtension
Permission for a rear dormer construction and new roof windows to front and rear slopes to facilitate an…
60, Dunluce Road, Clontarf, Dublin 3
2963/18Dublin CityLodged 10 May 2018
- GrantedExtension
Permission is sought for works to existing mid-terraced 2 storey dwelling as follows: Attic conversion…
68, Abberley, Killiney, Co. Dublin
D12B/0265Dún Laoghaire–RathdownLodged 8 Aug 2012
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