31, Mount Merrion Avenue, Blackrock, Dublin, A94Y0Y3
Demolition of a rear extension and construction of a new two-storey rear extension in Blackrock.
D24A/0495/WEB · Dun Laoghaire Rathdown County Council · Lodged 21 October 2024
- Reference
- D24A/0495/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 21 October 2024
Summary
AI-generatedThe project involves the demolition of a non-historic single-storey rear extension and the construction of a new two-storey rear extension. It also includes extensive internal alterations, window and door modifications, and restoration of existing front railings and steps.
- Storeys
- 2
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
Demolition of the existing non-historic, single storey rear return extension at the upper ground floor level and the subsequent construction of a new 2 storey extension to the rear providing a dining area, home office, utility room and wc at lower ground floor level and a bedroom and family bathroom at upper ground floor level. External modifications to include restoration of existing railings & granite entrance steps, refurbishment of all existing windows & doors. Modifications to front include a new door ope to front elevation at lower ground floor and adjustment of existing external steps to lower ground floor. Modifications to rear to include lowering cill height of existing window ope in dining room to form a new door access to new upper ground floor terrace. Widening of existing ope at lower ground floor to provide an open plan kitchen – dining area. Internal alterations to existing layout at lower ground floor to include new door ope and steps to existing stairs, closing up of existing door ope to stairs, new opening to provide access from entrance hall to new family room, removal of existing non-historic steps in new family room, widening of existing opening between new family room and kitchen, replacement of existing door with new window to front elevation, lowering of existing floor level in new hallway, removal of existing door and screen in new hallway and the construction of new lightweight stud partitions to facilitate a new plant room. Internal modifications at upper ground floor include replacement of existing partition and double doors between living room & dining room with new lightweight stud partitions & pocket doors. Internal modifications at first floor include removal of existing stud partitions & the construction of new lightweight stud partitions to facilitate the reconfiguration of the existing bedroom layouts. Calsitherm thermal insulation to the internal face of existing walls throughout. General restoration & decoration works, all associated site works to existing two-storey over basement end of terrace house. A protected structure.
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 |
|---|---|---|---|
| 43 Mount Merrion Ave, Blackrock, Dublin | Feb 2025 | €865,000 | 62 m |
| 44 Westfield, Rock Rd, Sion Hill | Jan 2025 | €730,000 | 69 m |
| Apt 17 Westfield, Sion Hill, Blackrock Dublin | Jul 2025 | €476,000 | 73 m |
| 11 Westfield, Sion Hill, Blackrocknot full market price | Jun 2026 | €211,218 | 83 m |
| 2 Rock Road Place, Blackrockprice excludes VAT | Oct 2025 | €1,387,665 | 114 m |
| 2 Sydney Mews, Sydney Avenue, Blackrock | Jun 2025 | €1,300,000 | 118 m |
| 15 Brooklawn, Mount Merrion Ave, Blackrock | Mar 2025 | €875,000 | 144 m |
| 31 Castledawson, Sion Hill Rock Road, Blackrock | May 2026 | €620,000 | 151 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 received21 October 2024
- Decision due15 November 2024
- Decision issued15 November 2024
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 for the demolition of an existing single storey extension to the rear of a three storey terraced…
29, Mount Merrion Avenue, Blackrock, Co. Dublin
D19A/0411Dún Laoghaire–RathdownLodged 13 Jun 2019Extension
- InvalidAt this site
Permission to demolish existing detached garage, and for the construction of a new detached garage/2 storey…
33, Mount Merrion Avenue, Blackrock, Co. Dublin
D16A/0174Dún Laoghaire–RathdownLodged 18 Mar 2016New dwelling
- RefusedAt this site
Removal of a section of the existing random rubble north/east facing boundary wall at Peafield (Lane) &…
33, Saint Cabríni, Mount Merrion Avenue, (corner of Mount Merrion Avenue & Peafield) Blackrock, Dublin, A94P5X5
D23A/0709Dún Laoghaire–RathdownLodged 14 Nov 2023Alterations
- GrantedAt this site
Demolition of an existing non historic shed to the rear garden and subsequent construction of a new…
Saint Cabríni, 33 Mount Merrion Avenue, Blackrock, Dublin, A94P5X5
D24A/0199Dún Laoghaire–RathdownLodged 21 Oct 2024Alterations
- GrantedAt this site
Demolition of a section of the existing rear return at the upper ground floor and the subsequent construction…
33, Saint Cabríni, Mount Merrion Avenue, Blackrock, Dublin, A94P5X5
D23A/0578Dún Laoghaire–RathdownLodged 6 Sept 2023Extension
- GrantedAt this site
The development will consist of the demolition of an existing garage to the rear and construction of a new…
Saint Annas, 27, Mount Merrion Avenue, Blackrock, Dublin, A94Y6V6 (A Protected Structure)
D25A/0168/WEBDún Laoghaire–RathdownLodged 4 Mar 2025Extension
- Exempt — no permission neededAt this site
Installation of 9no. Solar panels on roof of 27 Mount Merrion Avenue
Saint Annas, 27 Mount Merrion Avenue, Blackrock, Dublin, A94Y6V6 (A Protected Structure)
REF10824Dún Laoghaire–RathdownLodged 19 Sept 2024Energy
- GrantedAt this site
Creation of a new opening in the rear wall at ground floor level, the construction of a single storey,…
Saint Annas, 27 Mount Merrion Avenue, Blackrock, Dublin, A94E188
D23A/0649Dún Laoghaire–RathdownLodged 13 Oct 2023Extension
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
Refurbishment works, internal & external alterations & construction of new single storey extension to side…
16, Longford Terrace, Monkstown, Dublin, A94T0A2
D23A/0151Dún Laoghaire–RathdownLodged 16 Jun 2023
- GrantedExtension
External works: demolition of non-original single storey extension to the rear of existing house, demolition…
The Laurels , Main Street , Celbridge
17351KildareLodged 3 Apr 2017
- GrantedExtension
01)The demolition of a non-original single storey extension to the rear and the construction of a single…
3, Windsor Terrace, Dun Laoghaire,Co Dublin, A96X599 (Protected Structure)
D26A/0210/WEBDún Laoghaire–RathdownLodged 13 Mar 2026
- Awaiting decisionAlterations
PROTECTED STRUCTURE: The development will consist of — Removal of first floor non-original extension to rear…
No.8 Mountpleasant Avenue Upper (a protected structure),, Rathmines,, Dublin 6, D06 A263
WEB2207/26Dublin CityLodged 19 May 2026
- GrantedExtension
PROTECTED STRUCTURE: The development will consist of the demolition of an existing non-original two storey…
6, Palmerston Road, Rathmines, Dublin 6
2102/19Dublin CityLodged 23 Jan 2019
- GrantedAlterations
Development consisting of internal & external alterations at existing two storey over basement mid terrace…
7, Breffni Terrace, Breffni Road, Sandycove, Dublin, A96T851 (Protected Structure)
D25A/0389/WEBDún Laoghaire–RathdownLodged 17 Jul 2025
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