57, South Avenue, Mount Merrion, Stillorgan, Co. Dublin, A94A7P1
Demolition of a side garage and construction of a two-storey side extension, single-storey extensions, and a rear dormer.
D26A/0019/WEB · Dun Laoghaire Rathdown County Council · Lodged 16 January 2026
- Reference
- D26A/0019/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 16 January 2026
Summary
AI-generatedThe development includes the demolition of a single-storey side garage/kitchen extension and rear chimney. It will be replaced with a two-storey side extension, single-storey front and rear extensions, a rear dormer for an attic conversion, and a widened vehicular entrance.
- 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
A) demolition of existing (single storey) garage/kitchen extension to side and removal of existing chimney to rear of main roof; b) construction of two storey extension to the side and single storey extensions to rear and front (extending 800mm to front), c) construction of dormer extension (with window) to rear of existing/extended main roof (in connection with conversion of existing attic/roof space); d) alteration/extension of first floor window ope to rear; and, e) widening of existing vehicular entrance, all to existing house.
Built & 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 |
|---|---|---|---|
| 62 Thornhill Oaks, Blackrock, Co. Dublinprice excludes VAT | Mar 2026 | €859,031 | 38 m |
| Thornhill, Cherry Garth, Mount Merrion | Aug 2025 | €1,750,000 | 50 m |
| 63 Thornhill Oaks, Blackrock, Co. Dublin | May 2026 | €870,000 | 51 m |
| 32 South Ave, Mount Merrion, Dublin | Jan 2026 | €1,725,000 | 74 m |
| 28 South Ave, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 93 m |
| 49 Thornhill Oaks, Cherry Garth, Mount Merrionprice excludes VAT | Jan 2025 | €1,145,374 | 107 m |
| 49 Thornhill Oaks, Cherry Garth, Mount Merrion | Dec 2025 | €1,430,135 | 108 m |
| 24 South Ave, Mount Merrion, Dublin | Dec 2025 | €1,580,000 | 109 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 received16 January 2026
- Decision due12 March 2026
- Decision issued11 March 2026
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