12, Rochestown Avenue, Dun Laoghaire, Dublin
Partial demolition and construction of single-storey extensions to the front, side, and rear to form a four-bedroom house.
D26A/0056 · Dun Laoghaire Rathdown County Council · Lodged 30 January 2026
- Reference
- D26A/0056
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 30 January 2026
Summary
AI-generatedThe project involves partial demolition of front, side, and internal walls. New single-storey extensions will be built to the front, west side, and rear, alongside a new boundary wall, rooflights, and two parking spaces.
- Storey
- 1
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
Part demolitions to front,side and internal walls, new single storey extensions to front, west side and rear to form a 4 bed house, new 1500 high conc block boundary wall to front, new roof lights, 2 no. Car parking spaces, bin and bicycle area to front and patio to rear
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 |
|---|---|---|---|
| 32 Grange Crescent, Pottery Road, Dun Laoghaire | May 2026 | €770,000 | 112 m |
| 28 Grange Crescent, Pottery Rd, Dun Laoghaire | Jun 2026 | €650,000 | 152 m |
| 23 Grange Crescent, Kill O The Grange, Dublin | May 2025 | €780,000 | 155 m |
| 141 Clonkeen Crescent, Dun Laoghaire, Dublin | Jan 2026 | €760,000 | 201 m |
| 69 Rochestown Ave, Dun Laoghaire, Dublin | Jun 2025 | €850,000 | 236 m |
| 22 Sefton Green, Rochestown Ave, Dun Laoghaire | Mar 2025 | €722,000 | 278 m |
| 4 The Grange, Kill Of The Grange, Blackrock | Aug 2025 | €602,500 | 303 m |
| 5 The Grange, Laurel Place, Terenure Rd West Dublin 6w | Feb 2026 | €550,000 | 307 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 received30 January 2026
- Decision due26 March 2026
- Decision issued24 March 2026
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
Permission for shared vehicular access (in lieu of pedestrian gateways) to existing dwellings to consist of…
'Rose Cottage' & 'Murchison', 10 & 12 Rochestown Avenue, Dun Laoghaire, Co. Dublin
D20A/0764Dún Laoghaire–RathdownLodged 2 Mar 2021Alterations
- RefusedAt this site
The demolition of existing single-storey house and construction of one family dwelling. New house to be…
Rose Cottage, Rochestown Avenue, Dun Laoghaire, Co. Dublin
D07A/0115Dún Laoghaire–RathdownLodged 26 Jan 2007New dwelling
- Granted40 m away
Planning permission is sought for alterations and additions including internal, elavational and roof…
Maple Lodge, Pottery Road, Dun Laoghaire, Co. Dublin
D11B/0234Dún Laoghaire–RathdownLodged 11 Jul 2011Extension
- Granted40 m away
Permission for Retention of a pitched roofed, galvanized steel frame shed structure with an area of 55.5 sqm…
Unit 14 The Old Pottery Complex, Rochestown Avenue, Dún Laoghaire, Co Dublin A96 FK60
D19A/0209Dún Laoghaire–RathdownLodged 27 Mar 2019Retention
- Granted50 m away
Planning permission for demolition of existing front boundary wall and garage and construction of new front…
Ivy Cottage, Rochestown Avenue, Dun Laoghaire, County Dublin
D16A/0835Dún Laoghaire–RathdownLodged 5 Apr 2017Alterations
- Granted50 m away
Permission sought for single storey extension at rear
Orchard Cottage, Pottery Rd, Dun Laoghaire, Co. Dublin, A96 W3W5
D22B/0047Dún Laoghaire–RathdownLodged 4 Feb 2022Extension
- Granted60 m away
The raising of part of the black pitch of the roof to allow for attic accommodation and the construction of a…
Orchard Cottage, Pottery Road, Dun Laoghaire, Co. Dublin.
D02B/0600Dún Laoghaire–RathdownLodged 24 Jul 2002Extension
- Granted70 m away
Retention permission of single storey extension to the rear comprising bedroom, part living room and bathroom…
37, Rochestown Avenue, Dun Laoghaire, Co. Dublin
D10B/0419Dún Laoghaire–RathdownLodged 1 Oct 2010Retention
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
Proposed part demolition, extensions to the rear and side at ground floor level to provide new utility,…
23, Ashton Park, Monkstown, Co. Dublin
D04B/0360Dún Laoghaire–RathdownLodged 11 May 2004
- GrantedExtension
Demolition of the existing single storey shed, part rear elevation, part front elevation at ground floor…
15, Clonfert Road, Crumlin, Dublin 12
3618/18Dublin CityLodged 31 Jul 2018
- InvalidNew dwelling
Demolition of single storey extension to side and construction of new 2 and a half storey detached four…
27, Brookfield, Kimmage, Dublin 12 D12 N2E1
WEB1750/22Dublin CityLodged 16 Aug 2022
- GrantedNew dwelling
Demolition of extensions only at side of existing house, which will be retained, and for construction in side…
12, Deerpark Road, Mount Merrion, Co. Dublin
D04A/0289Dún Laoghaire–RathdownLodged 29 Jul 2004
- GrantedNew dwelling
Demolition of existing two storey, flat roof extension (127 sq.m) to side. Construction of detached, two…
76, Whitehall Road West, Dublin 12
SD23A/0165South DublinLodged 19 Oct 2023
- GrantedNew dwelling
Demolition of an existing single storey extension and converted garage, sub-division of plot, erection of new…
2, Fonthill Park, Rathfarnham, Dublin 14
SD17A/0021South DublinLodged 31 May 2017
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.