48 Sycamore Road, Mount Merrion, Co Dublin
Alterations and extensions to a house in Mount Merrion, including a rear dormer and a single-storey rear extension.
D18A/0007 · Dun Laoghaire Rathdown County Council · Lodged 5 January 2018
- Reference
- D18A/0007
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 5 January 2018
Summary
AI-generatedThe proposed works include replacing a flat roof on a two-storey side extension with a pitched roof, adding a rear dormer at attic level, and extending the first floor into the front balcony. A single-storey rear extension and new roof lights are also proposed.
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
Permission to alter, extend and carry out ancillary contingent works, to include: a. Alterations and extension of the existing flat roofed, two storey side extension, including replacing the flat roof with a pitched, hipped roof. B. Formation, at attic level, of a rear dormer. C. Extension of the first floor area into the front balcony area. D. Construction of a single storey rear extension at ground floor level. E. The fitting of two roof lights in the existing front roof slope and one r...
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 18 May 2018.
Notified floor area: 81 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 29 Sycamore Road, Mount Merrion, Co Dublin | Sept 2025 | €1,785,000 | 137 m |
| 117 The Rise, Mount Merrion, Dublin | Mar 2025 | €1,701,001 | 200 m |
| 4 Dualla Court, Stillorgan Rd, Stillorgan | Jan 2025 | €485,000 | 246 m |
| 56 Trees Rd, Mount Merrion, Blackrock | Apr 2025 | €1,285,000 | 257 m |
| 31 Trees Rd, Mount Merrion, Blackrock | Nov 2025 | €1,740,000 | 267 m |
| 30 Treesdale, Stillorgan Rd, Stillorgan | Oct 2025 | €985,000 | 278 m |
| 1b Priory Drive, Stillorgan, Co Dublinnot full market price | May 2026 | €173,359 | 284 m |
| 2 Cherrygarth, Mount Merrionprice excludes VAT | Oct 2025 | €881,057 | 288 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 received5 January 2018
- Decision issued28 February 2018
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Granted30 m away
Two storey extension to rear of existing dwelling and the conversion and extension of attic for use as…
11, Trees Road Lower, Mount Merrion, Co. Dublin
D04B/0225Dún Laoghaire–RathdownLodged 24 Mar 2004Extension
- Granted30 m away
Permission is sought for demolition of existing single storey structure to rear and bay window to side; and…
50, Sycamore Road, Mount Merrion, Co. Dublin
D18B/0388Dún Laoghaire–RathdownLodged 30 Aug 2018Extension
- Granted30 m away
Permission for a two storey extension to the front and a single and two storey extension to the rear (total…
7 Trees Road Lower, Mount Merrion, Co Dublin A94 D6X2
D19B/0135Dún Laoghaire–RathdownLodged 14 Mar 2019Extension
- Granted30 m away
Permission is sought for construction of two storey extension with converted attic (extending the existing…
7, Trees Road, Mount Merrion, Blackrock, Co. Dublin
D10A/0370Dún Laoghaire–RathdownLodged 4 Feb 2011Extension
- Awaiting decision30 m away
The development will consist of the renovation and extension of existing 2-storey semi-detached house to…
42, Sycamore Road, Mount Merrion, Blackrock, Co. Dublin, A94Y1T0
D26B/0401/WEBDún Laoghaire–RathdownLodged 14 Jul 2026Extension
- Granted40 m away
Permission is sought for development comprising extensions at rear, ground floor level and first floor level,…
5, Trees Road, Mount Merrion, Blackrock, Co. Dublin
D15A/0488Dún Laoghaire–RathdownLodged 31 Jul 2015Extension
- Granted40 m away
Demolition of existing single storey extension to rear, construction of new single storey extension to rear,…
5, Trees Road Lower, Mount Merrion, Blackrock, Dublin, A94XP97
D23B/0349Dún Laoghaire–RathdownLodged 25 Jul 2023Extension
- Refused50 m away
Permission for retention of sash windows to front elevation
3 Trees Road, Mount Merrion, Co Dublin
D14B/0342Dún Laoghaire–RathdownLodged 13 Oct 2014Retention
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- Awaiting decision
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Permission for — New rear dormer style extension at first floor
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3523/22Dublin CityLodged 15 Mar 2022
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