46, South Avenue, Mount Merrion, Co. Dublin, A94W9D8
Demolition of a side garage and construction of a two-storey side and single-storey rear extension in Mount Merrion.
D26A/0159/WEB · Dun Laoghaire Rathdown County Council · Lodged 2 March 2026
- Reference
- D26A/0159/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- In progress
- Type
- Permission
- Received
- 2 March 2026
Summary
AI-generatedThis application seeks permission to demolish an existing single-storey side garage and remove a chimney. It proposes the construction of a two-storey side extension, a single-storey rear extension, an attic conversion, and the widening of the vehicular entrance.
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
Full planning permission for the demolition of the existing single-story side garage & removal of chimney to the main roof, construction of a two-story side extension, single-story rear extension & attic conversion with windows to the existing dwelling & widening of the existing vehicular entrance, all ancillary site works necessary.
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 South Ave, Mount Merrion, Dublin | Jan 2026 | €1,725,000 | 82 m |
| 33 Clonmore Rd, Mount Merrion, Dublin | Apr 2026 | €1,425,000 | 95 m |
| 62 Thornhill Oaks, Blackrock, Co. Dublinprice excludes VAT | Mar 2026 | €859,031 | 103 m |
| 28 South Ave, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 108 m |
| Thornhill, Cherry Garth, Mount Merrion | Aug 2025 | €1,750,000 | 116 m |
| 63 Thornhill Oaks, Blackrock, Co. Dublin | May 2026 | €870,000 | 116 m |
| 24 South Ave, Mount Merrion, Dublin | Dec 2025 | €1,580,000 | 128 m |
| 71 Trees Road, Mount Merrion, Co Dublin | Aug 2025 | €1,480,000 | 137 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 received2 March 2026
- Decision due27 April 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
The development will consist of — Demolition of existing garage and kitchen chimney. Construction of single…
44, South Avenue, Mount Merrion, Co. Dublin
D06A/1488Dún Laoghaire–RathdownLodged 13 Oct 2006Extension
- GrantedAt this site
Permission is being sought for alterations and additions to an existing 2-storey (with dormer) semi-detached…
44, South Avenue, Mount Merrion, Dublin,
D21B/0691Dún Laoghaire–RathdownLodged 17 Dec 2021Extension
- RefusedAt this site
Permission for — Construction of 1 no. two storey five bedroom, infill dwelling with single storey element to…
88 Trees Road Upper, Mount Merrion, Blackrock, Co Dublin
D18A/0284Dún Laoghaire–RathdownLodged 29 Mar 2018New dwelling
- GrantedAt this site
Demolition of the existing two-storey extension to side and single storey extensions to rear and for erection…
42, South Avenue, Mount Merrion, Co. Dublin
D04B/0421Dún Laoghaire–RathdownLodged 28 May 2004Extension
- GrantedAt this site
Permission for Retention of modifications to single storey extensions at rear, previously granted planning…
42 South Avenue, Mount Merrion, Co Dublin
D15B/0090Dún Laoghaire–RathdownLodged 25 Mar 2015Retention
- GrantedAt this site
Permission is sought. The development will consist of (i) Demolition of existing two-storey detached…
88, Trees Road Upper, Mount Merrion, Blackrock, Co. Dublin
D18A/0823Dún Laoghaire–RathdownLodged 8 Mar 2019Apartments
- Part granted, part refused30 m away
Permission is sought for; a) A proposed first floor extension to front, above existing garage conversion; b)…
40 South Avenue, Mount Merrion, Blackrock, Co. Dublin, A94X5N0
D26B/0064/WEBDún Laoghaire–RathdownLodged 3 Feb 2026Extension
- Compliance submission40 m away
Compliance with Condition No.7 of Reg Ref D21A/0538 (N&N)
39 Clonmore Road, Mount Merrion, Co. Dublin
D21A/0538/C1Dún Laoghaire–RathdownLodged 13 Mar 2026Other
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
Permission for the demolition of attached garage to side of existing dwelling, existing chimneys,…
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Planning permission for the demolition of existing side garage, rear and side single storey extension, front…
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D23A/0105Dún Laoghaire–RathdownLodged 20 Feb 2023
- Awaiting decisionExtension
Permission for (a) Demolition of single storey garage, kitchen and chimney to side of existing dwelling, (b)…
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2039771Cork CityLodged 18 Dec 2020
- WithdrawnExtension
Permission for demolition of existing domestic garage structure; construction of new two storey extension to…
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D16B/0220Dún Laoghaire–RathdownLodged 26 May 2016
- GrantedExtension
Permission for demolition of existing garage to the side and construction of a new two storey extension to…
9 Wyckham Park Road, Dundrum, Dublin 16
D18B/0140Dún Laoghaire–RathdownLodged 7 Jun 2018
- WithdrawnExtension
Permission for the demolition of existing single storey side garage and side kitchen, removal of side chimney…
23 Landscape Crescent, Churchtown, Dublin 14
D17B/0087Dún Laoghaire–RathdownLodged 22 Feb 2017
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