8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0
Demolition of a garage and construction of a large side and rear extension, attic dormer, and a new garden shed.
D24A/0937/WEB · Dun Laoghaire Rathdown County Council · Lodged 24 February 2025
- Reference
- D24A/0937/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 24 February 2025
Summary
AI-generatedThe project involves the demolition of an existing garage and the construction of a part two-storey side and rear extension, alongside a new rear attic dormer. The works will also include internal modifications, external insulation, a first-floor balcony, and a new 18 sqm garden shed.
- Floor area
- 141 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
The proposed extension to the side and rear of the house consists of a part 2-storey extension to the southwest of the main house and an attic at the rear northeast, covering an area of proposed works 140.90 sq. M , total overall house area is 284.4 sqm. Proposed internal layout modifications and alterations at both the ground and first floors. Demolition of the existing garage, widening of the existing entrance boundary wall with a new sliding gate, and part removal of side (southeast), and rear (northeast) roof areas to facilitate the new rear extension roofs. Proposed construction of a new rear attic dormer with a flat roof at the second-floor level integrated within the existing roof space. Proposed new roof lights in the existing roof over the main stairwell and velux roof lights. Proposed new balcony at the first floor facing northeast elevation. The existing house's external walls are proposed to be fitted with external insulation and clad in brick slips at ground level and rendered at first-floor level. Replacement of all existing windows and new entrance door. Proposed new single-storey shed of 18 sqm. All with associated site works, landscaping, and drainage connected to existing services.
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 |
|---|---|---|---|
| 29 Sycamore Road, Mount Merrion, Co Dublin | Sept 2025 | €1,785,000 | 89 m |
| 4 Dualla Court, Stillorgan Rd, Stillorgan | Jan 2025 | €485,000 | 163 m |
| Apt 6, Fortwilliam, Mount Merrion Ave | Jun 2025 | €460,000 | 186 m |
| Seven Churches, Glendalough, Co Wicklow | Sept 2025 | €351,000 | 211 m |
| 28 Merrion Hall, Mount Merrion Ave, Blackrock | Feb 2025 | €600,000 | 230 m |
| 26 Ashurst, Mount Merrion Ave, Blackrock | Aug 2025 | €510,500 | 241 m |
| 18 Greenfield Road, Mount Merrion, Blackrock | Oct 2025 | €1,350,000 | 259 m |
| 117 The Rise, Mount Merrion, Dublin | Mar 2025 | €1,701,001 | 263 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 received24 February 2025
- Decision due21 March 2025
- Decision issued19 March 2025
- Appeal submitted3 April 2025
- Appeal decided22 July 2025
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Compliance submissionAt this site
Compliance with Condition No.4 of ABP32222625 (Reg Ref No. D24A/0937/WEB)
8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0
D24A/0937/WEB/C4Dún Laoghaire–RathdownLodged 28 Nov 2025Other
- Compliance submissionAt this site
Compliance with Condition No.3 of ABP32222625, (Reg Ref No. D24A/0937/WEB)
8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0
D24A/0937/WEB/C1Dún Laoghaire–RathdownLodged 28 Oct 2025Other
- Compliance submissionAt this site
Compliance with Condition No. 10 of ABP32222625 (Reg Ref No. D24A/0937/WEB)
8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0
D24A/0937/WEB/C3Dún Laoghaire–RathdownLodged 6 Nov 2025Alterations
- Awaiting decisionAt this site
Compliance with Condition No.9 of ABP32222625 (Reg Ref No. D24A/0937/WEB)
8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0
D24A/0937/WEB/C5Dún Laoghaire–RathdownLodged 9 Dec 2025Other
- Compliance submissionAt this site
Compliance with Condition No.2 of ABP32222625, (Reg Ref No. D24A/0937/WEB)
8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0
D24A/0937/WEB/C2Dún Laoghaire–RathdownLodged 28 Oct 2025Other
- Compliance submissionAt this site
Compliance with Condition No. 7 of ABP32222625 (Reg Ref No. D24A/0937/WEB)
8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0
D24A/0937/WEB/C6Dún Laoghaire–RathdownLodged 18 Dec 2025Other
- GrantedAt this site
For internal refurbishment, two storey extension to side and rear, single storey extension to rear and attic…
14, Sycamore Road, Mount Merrion, Co. Dublin
D05B/0790Dún Laoghaire–RathdownLodged 8 Nov 2005Extension
- GrantedAt this site
Side extension at first floor level, and at attic level, with associated velux roof light to side elevation;…
7, Sycamore Crescent, Mount Merrion, Co. Dublin
D06B/0810Dún Laoghaire–RathdownLodged 6 Sept 2006Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
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D24A/0048Dún Laoghaire–RathdownLodged 23 Jan 2024
- GrantedExtension
The proposed works include: (i) Demolition of the existing garage and removal of the existing roof; (ii)…
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D25A/0789/WEBDún Laoghaire–RathdownLodged 17 Oct 2025
- GrantedExtension
An extension to the south of the house at ground floor level to kitchen/dining area of circa 6.5sqm and…
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SD07B/0868South DublinLodged 18 Oct 2007
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SD16B/0300South DublinLodged 12 Sept 2016
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8, Saint Canice's Road, Dublin 11
WEB2127/24Dublin CityLodged 13 Sept 2024
- GrantedExtension
Demolition of existing garage to the side of the house, the existing porch to the front of the house, a 1st…
Karmainu, 1, Riversdale Avenue, Dublin 6, D06 W9X4
WEB1151/25Dublin CityLodged 27 Jan 2025
Community
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