The Gables, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin
Single-storey rear extension including an orangery and outdoor terrace in Mount Merrion.
D21B/0492 · Dun Laoghaire Rathdown County Council · Lodged 8 December 2021
- Reference
- D21B/0492
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 8 December 2021
Summary
AI-generatedThe project consists of constructing a single-storey rear extension featuring a new orangery with two lantern skylights. It also includes a hard-landscaped outdoor terrace and revised windows for the existing study.
- Storey
- 1
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 is sought for the proposed construction of a single storey extension and construction of a single storey and outdoor terrace to the rear of an existing dwelling. The proposed rear extension will consist of a. ) a new single storey orangery b. ) 2 no. Lantern skylights over the proposed orangery c. ) hard landscaped outdoor terrace to the rear d. ) revised fenestration to the existing study room e. ) all ancillary site works and 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.
Built — construction complete
A commencement notice records works starting on 18 September 2023.
Notified floor area: 24.63 m²
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 | 140 m |
| Apt 6, Fortwilliam, Mount Merrion Ave | Jun 2025 | €460,000 | 153 m |
| 28 Merrion Hall, Mount Merrion Ave, Blackrock | Feb 2025 | €600,000 | 186 m |
| 26 Ashurst, Mount Merrion Ave, Blackrock | Aug 2025 | €510,500 | 201 m |
| Seven Churches, Glendalough, Co Wicklow | Sept 2025 | €351,000 | 227 m |
| 18 Greenfield Road, Mount Merrion, Blackrock | Oct 2025 | €1,350,000 | 236 m |
| 95 Merrion Park, Blackrock, Co. Dublin | Sept 2025 | €1,120,000 | 270 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 received8 December 2021
- Decision issued11 January 2022
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
Planning permission to: (i) Construct a two storey East facing side and front extension with alterations to…
The Gables, Sycamore Crescent, Mount Merrion, Dublin, A94Y8D2
D25B/0727/WEBDún Laoghaire–RathdownLodged 21 Dec 2025Extension
- 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
- Compliance submission40 m away
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
- Awaiting decision40 m away
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
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 addition of 1 no. bay window to match existing. Construction of new single storey orangery…
9 Whitebarn Road, Churchtown, Dublin D14 K5K8
D17B/0316Dún Laoghaire–RathdownLodged 23 Aug 2017
- GrantedExtension
Permission for development consisting of the construction of single-storey extension with rooflights to rear…
Ardeevin, 4, Newtownpark Avenue, Blackrock, Co. Dublin A94 E6K7
D20B/0179Dún Laoghaire–RathdownLodged 23 Jun 2020
- GrantedExtension
Permission sought for, A. proposed front single storey orangery sunroom extension with associated internal…
Shielmartin Lodge, Carrickbrack Road, Howth, Co. Dublin, D13 X796
F25A/0350FingalLodged 24 Apr 2025
- GrantedExtension
PERMISSION: For the construction of a new single-storey extension to the rear of an existing end-of-terraced…
634, South Circular Road, Dublin 8
4054/23Dublin CityLodged 29 Jun 2023
- Awaiting decisionExtension
Permission for the removal of 2no. dormer windows to the rear of the existing roof, provision of a new window…
5 Mount Pleasant Windmill Hill, Youghal-Lands Youghal Co.Cork
25/4918corkLodged 16 May 2025
- GrantedExtension
Permission for the construction of a single storey extension to the rear of an existing dwelling, alterations…
No.7 Douglas Hall Lawn , Well Road , Cork
2039121Cork CityLodged 28 Feb 2020
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