The Gables, Sycamore Crescent, Mount Merrion, Dublin, A94Y8D2
Construction of a two-storey side and front extension, a small rear extension, and roof alterations.
D25B/0727/WEB · Dun Laoghaire Rathdown County Council · Lodged 21 December 2025
- Reference
- D25B/0727/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 21 December 2025
Summary
AI-generatedThe project involves constructing a two-storey east-facing side and front extension with alterations to the existing roof profile, including replacing grey roof tiles with black slate. It also includes a 7 sqm ground-level rear extension to bedroom 4 to accommodate an en-suite.
- 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
Planning permission to: (i) construct a two storey east facing side and front extension with alterations to the existing roof profile. (ii) the proposed works will also include replacing the existing grey roof tile with a selected black roof slate. (iii) to the rear it is proposed to extend bedroom 4 at ground level by 7 sq. M to accommodate an en-suite. (iv) all the associated internal and external site and drainage 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.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 29 Sycamore Road, Mount Merrion, Co Dublin | Sept 2025 | €1,785,000 | 133 m |
| 4 Dualla Court, Stillorgan Rd, Stillorgan | Jan 2025 | €485,000 | 139 m |
| Apt 6, Fortwilliam, Mount Merrion Ave | Jun 2025 | €460,000 | 152 m |
| 28 Merrion Hall, Mount Merrion Ave, Blackrock | Feb 2025 | €600,000 | 186 m |
| 26 Ashurst, Mount Merrion Ave, Blackrock | Aug 2025 | €510,500 | 200 m |
| Seven Churches, Glendalough, Co Wicklow | Sept 2025 | €351,000 | 228 m |
| 18 Greenfield Road, Mount Merrion, Blackrock | Oct 2025 | €1,350,000 | 237 m |
| 95 Merrion Park, Blackrock, Co. Dublin | Sept 2025 | €1,120,000 | 269 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 December 2025
- Decision due23 February 2026
- Decision issued20 February 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
Permission is sought for the proposed construction of a single storey extension and construction of a single…
The Gables, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin
D21B/0492Dún Laoghaire–RathdownLodged 8 Dec 2021Extension
- GrantedAt this site
Permission consisting of erection of a two storey extension to dwelling and garage comprising two bedrooms,…
The Gables, Sycamore Crescent, Mount Merrion, Co. Dublin
D13B/0068Dún Laoghaire–RathdownLodged 25 Feb 2013Extension
- GrantedAt this site
Permission is sought for the demolition of existing garage structure to side of existing 2 storey single…
5 Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94 F7P4
D21A/0511Dún Laoghaire–RathdownLodged 3 Jun 2021Extension
- Granted30 m away
(a) Retention of attic conversion for use as bedroom with en-suite bathroom and associated velux roof light…
7, Sycamore Crescent, Mount Merrion, Co. Dublin
D05B/0219Dún Laoghaire–RathdownLodged 29 Mar 2005Extension
- Granted30 m away
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
- Granted40 m away
For development consisting of demolition of two storey side garage with bedroom over on Northern gable,…
Dunsland, Greygates, Stillorgan Road, Mount Merrion, Blackrock, Co. Dublin
D05A/1297Dún Laoghaire–RathdownLodged 7 Oct 2005Extension
- Granted40 m away
Permission for development consisting of ground floor level single storey bay window extension to the rear…
Dunsland, Greygates, Stillorgan Road, Mount Merrion, Blackrock, Co. Dublin A94D2E1
D20A/0542Dún Laoghaire–RathdownLodged 31 Jul 2020Extension
- Compliance submission40 m away
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
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