21, Sycamore Road, Mount Merrion, Co. Dublin
Revisions to a previously approved extension to enlarge the single-storey rear element.
D11A/0346 · Dun Laoghaire Rathdown County Council · Lodged 21 July 2011
- Reference
- D11A/0346
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 21 July 2011
Summary
AI-generatedThe applicant seeks revisions to an approved extension (Reg. Ref. D11A/0161) at a semi-detached house. The changes involve enlarging the single-storey rear extension by approximately 12 sq.m, along with ancillary site works.
- 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 sought for revisions to proposed extension approved under reg. Ref. D11a/0161, to the side and rear of the existing semi-detached house comprising the enlargement of the single storey rear extension by c. 12 sq. M and with ancillary site works and landscaping, all on a site of area c. 0.0677 ha.
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 | 52 m |
| Seven Churches, Glendalough, Co Wicklow | Sept 2025 | €351,000 | 167 m |
| 117 The Rise, Mount Merrion, Dublin | Mar 2025 | €1,701,001 | 205 m |
| 4 Dualla Court, Stillorgan Rd, Stillorgan | Jan 2025 | €485,000 | 226 m |
| Apt 6, Fortwilliam, Mount Merrion Ave | Jun 2025 | €460,000 | 252 m |
| 18 Greenfield Road, Mount Merrion, Blackrock | Oct 2025 | €1,350,000 | 272 m |
| 31 Trees Rd, Mount Merrion, Blackrock | Nov 2025 | €1,740,000 | 288 m |
| 28 Merrion Hall, Mount Merrion Ave, Blackrock | Feb 2025 | €600,000 | 291 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 July 2011
- Decision issued1 September 2011
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 sought for demolition of existing garage and rere extension and construction of a part single and…
21, Sycamore Road, Mount Merrion, Co. Dublin
D11A/0161Dún Laoghaire–RathdownLodged 1 Apr 2011Extension
- GrantedAt this site
Construction of single and two storey extension to rear, small (2.6m x 3m) frestanding garden room retreat,…
23, Sycamore Road, Mount Merrion, Blackrock, Dublin, A94E3P2
D23B/0422Dún Laoghaire–RathdownLodged 12 Dec 2023Extension
- GrantedAt this site
Permission for the increase in width of existing vehicular entrance, new entrance gates, modifications to and…
23 Sycamore Road, Mount Merrion, Co Dublin
D19A/0185Dún Laoghaire–RathdownLodged 15 Mar 2019Alterations
- GrantedAt this site
Retention of the widening of existing vehicular means of access to a width of 3.6m to the front of the two…
9, Sycamore Crescent, Mount Merrion, Co. Dublin
D08A/0840Dún Laoghaire–RathdownLodged 21 Jul 2008Retention
- Granted60 m away
The development will consist of the construction of a 2 storey side extension comprising games room and…
12, Sycamore Crescent, Mount Merrion,Blackrock, Co. Dublin
D07B/0796Dún Laoghaire–RathdownLodged 6 Sept 2007Extension
- Part granted, part refused60 m away
Permission is sought for development which will consist of the following works: Removal of single storey…
78, The Rise, Mount Merrion, Co. Dublin
D12B/0345Dún Laoghaire–RathdownLodged 26 Oct 2012Extension
- Granted60 m away
Permission is sought for construction of a two storey extension of area c 58.7 square metres to the rear of…
31, Sycamore Road, Mount Merrion, Co. Dublin.
D08B/0321Dún Laoghaire–RathdownLodged 29 Apr 2008Extension
- Granted60 m away
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
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 sought for demolition of existing garage and rere extension and construction of a part single and…
21, Sycamore Road, Mount Merrion, Co. Dublin
D11A/0161Dún Laoghaire–RathdownLodged 1 Apr 2011
- GrantedExtension
Permission is sought for a single storey extension area c.17 sq.m. to rear of the existing semi-detached two…
17, Finsbury Green, Churchtown, Dublin 14
D21B/0200Dún Laoghaire–RathdownLodged 26 Apr 2021
- GrantedExtension
The development will consist of the provision of new 10.5 sq.m. single storey rear extension to existing…
37, Mount Eagle Green, Leopardstown Heights, Dublin 18
D05B/0227Dún Laoghaire–RathdownLodged 30 Mar 2005
- GrantedAlterations
Permission is sought for revision to house extension and alteration previously permitted under Reg. Ref.…
80 Beech Park Road, Foxrock, Dublin 18
D20A/0382Dún Laoghaire–RathdownLodged 4 Jun 2020
- GrantedExtension
Permission for the construction of a single storey extension to rear of dwelling (5.5 sq.m.) and associated…
37 St. Vincent's Park, Blackrock, Co Dublin, A94PX61
D22B/0398Dún Laoghaire–RathdownLodged 2 Sept 2022
- GrantedExtension
Extensions and alterations to an existing two storey semi-detached dwelling comprising of a two storey…
7, Blackthorn Hill Crescent, Rathcoole, Co. Dublin, D24 KD23
SD20B/0290South DublinLodged 7 Oct 2020
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