Saint Annas, 27 Mount Merrion Avenue, Blackrock, Dublin, A94Y6V6
Demolition of rear structures and construction of a basement-level rear extension.
D23A/0070 · Dun Laoghaire Rathdown County Council · Lodged 21 June 2023
- Reference
- D23A/0070
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 21 June 2023
Summary
AI-generatedThe project involves the demolition of a split-level bathroom and rear sheds, followed by the construction of an 11 sqm single-storey rear extension at basement level. It also includes window replacements, internal basement alterations, and patio works.
- Floor area
- 11 m²
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 existing single storey split level bathroom and associated external stairs & external rear sheds to rear of house. Addition of a 11sqm single storey structure to rear at basement level, adjustments to the fenestration on the rear basement wall to accomodate the new basement floor plan, minor adjustments to front basement windows/door. Minor internal demolition of some walls and lowering of floor level in basement. Replacement of all windows and doors. Minor alterations to front patio and a new patio with steps to the rear. Maintain connection to existing surface water and soil water and all ancillary 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.
Built — construction complete
A commencement notice records works starting on 2 November 2023.
Notified floor area: 214 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| Apt 17 Westfield, Sion Hill, Blackrock Dublin | Jul 2025 | €476,000 | 60 m |
| 11 Westfield, Sion Hill, Blackrocknot full market price | Jun 2026 | €211,218 | 70 m |
| 44 Westfield, Rock Rd, Sion Hill | Jan 2025 | €730,000 | 77 m |
| 43 Mount Merrion Ave, Blackrock, Dublin | Feb 2025 | €865,000 | 79 m |
| 2 Rock Road Place, Blackrockprice excludes VAT | Oct 2025 | €1,387,665 | 104 m |
| 2 Sydney Mews, Sydney Avenue, Blackrock | Jun 2025 | €1,300,000 | 111 m |
| 31 Castledawson, Sion Hill Rock Road, Blackrock | May 2026 | €620,000 | 140 m |
| 15 Brooklawn, Mount Merrion Ave, Blackrock | Mar 2025 | €875,000 | 150 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 June 2023
- Decision due18 July 2023
- Decision issued17 July 2023
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
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
- 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
- Compliance submissionAt this site
Compliance with Condition no.3 of Reg Ref no D23A/0649
Saint Annas, 27 Mount Merrion Avenue, Blackrock, Dublin, A94E188
D23A/0649/C1Dún Laoghaire–RathdownLodged 19 Feb 2024Other
- 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
- GrantedAt this site
Demolition of the existing non-historic, single storey rear return extension at the upper ground floor level…
31, Mount Merrion Avenue, Blackrock, Dublin, A94Y0Y3
D24A/0495/WEBDún Laoghaire–RathdownLodged 21 Oct 2024Extension
- Invalid30 m away
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
- Granted30 m away
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
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
Demolition of the existing 42sqm single storey and 12sqm first floor extension to the rear and construction…
1, Neptune Terrace, Breffni Road, Sandycove, Co. Dublin, A96P981 (A Protected Structure)
D26A/0009/WEBDún Laoghaire–RathdownLodged 12 Jan 2026
- GrantedExtension
Proposed demolition of the existing small two-storey rear return and lean-to structures and the construction…
14, Monkstown Crescent, Monkstown, Dublin, A94DE29. Protected Structure
D23A/0510Dún Laoghaire–RathdownLodged 6 Nov 2023
- GrantedExtension
A) Demolition of the existing single-storey annex and chimney to the rear of the house; b) The provision of a…
Glen More , Lismore , Co. Waterford
17905WaterfordLodged 22 Dec 2017
- GrantedExtension
(a) Partial demolition and removal of roofing to existing rear extension, (b) demolition of an existing…
18, Glenmaroon Park, Palmerstown, Dublin 20
SD05B/0697South DublinLodged 1 Nov 2005
- GrantedExtension
Demolition of existing toilet / shower extension and sheds to rear — Part excavation of rear garden to…
5, Shanganagh Terrace, Ballybrack, Killiney, Co. Dublin.
D05A/0108Dún Laoghaire–RathdownLodged 28 Jul 2005
- GrantedExtension
Permission for the construction of a one and half storey addition with lower level being 540mm lower than…
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235711corkLodged 23 Aug 2023
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