56, Foster Avenue, Mount Merrion, Co. Dublin, A94N292
Attic conversion to a bedroom with two new dormer windows in Mount Merrion.
D25B/0689/WEB · Dun Laoghaire Rathdown County Council · Lodged 9 December 2025
- Reference
- D25B/0689/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 9 December 2025
Summary
AI-generatedThe project involves converting the existing attic space into a bedroom and ensuite. The works will feature the construction of two dormer windows, one to the rear and one to the side, along with a new Velux window.
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 conversion of the attic to a bedroom and ensuite. The works will also consist of the construction of two dormer windows, one to the rear for the bedroom and one to the side to allow for access to the attic room and a new velux window.
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 |
|---|---|---|---|
| 14 Mather Rd North, Mount Merrion, Dublin | Jan 2026 | €1,845,000 | 88 m |
| 32 St Thomas Rd, Mount Merrion, Dublin | Mar 2025 | €1,900,000 | 191 m |
| 9 Cypress Road, Mount Merrion, Co Dublin | Jun 2026 | €1,230,000 | 203 m |
| 91 Foster'S Avenue, Mount Merrion, Co Dublin | Jun 2026 | €1,495,000 | 215 m |
| 33 North Avenue, Mount Merrion, Blackrock | Sept 2025 | €2,365,000 | 247 m |
| 19 Cypress Road, Mount Merrion, Dublin | Jun 2026 | €1,210,000 | 260 m |
| 6 Owenstown Lodge, Fosters Avenue, Owenstown Park | Apr 2026 | €470,622 | 297 m |
| 14 St Thomas Road, Mount Merrion, Blackrock | Jul 2025 | €1,750,000 | 312 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 received9 December 2025
- Decision due11 February 2026
- Decision issued9 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 for: A. Widening of an existing vehicular access to 3.5 m clear width at the front boundary of the…
Clogrenan, 56 Foster's Avenue, Mount Merrion, Co Dublin
D18A/1043Dún Laoghaire–RathdownLodged 8 Nov 2018Alterations
- GrantedAt this site
Demolition of the existing garage and utility, construction of a two storey extension to side including…
54, Fosters Avenue, Mount Merrion, County Dublin.
D07A/1661Dún Laoghaire–RathdownLodged 5 Dec 2007Extension
- RefusedAt this site
Permission is sought for development consisting of demolition of existing single storey sun room to rear and…
52, Fosters Avenue, Mount Merrion, Co. Dublin.
D07A/1082Dún Laoghaire–RathdownLodged 30 Jul 2007Extension
- RefusedAt this site
Permission sought for demolition of existing single storey sun room to rear and provision of new single…
52, Fosters Avenue, Blackrock, Dublin
D07B/0100Dún Laoghaire–RathdownLodged 2 Feb 2007Extension
- Granted30 m away
Permission for alterations and extension to a two-storey semi-detached dwelling, comprising a single storey…
62 Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, A94 W868
D22A/0127Dún Laoghaire–RathdownLodged 21 Feb 2022Extension
- Granted30 m away
Permission for development. The development will consist of demolition of the existing garage and store, part…
Rosbeg, no 62, Foster's Avenue, Mount Merrion, Blackrock, Co. Dublin, A94 W868
D18A/0819Dún Laoghaire–RathdownLodged 27 Aug 2018Extension
- Granted30 m away
Planning permission sought for alterations and extension to existing two-storey semi-detached dwelling,…
Rosbeg, 62, Fosters Avenue, Mount Merrion, Co. Dublin
D17A/0569Dún Laoghaire–RathdownLodged 22 Jun 2017Extension
- Granted50 m away
A single storey games room shed
64, Foster Avenue, Mount Merrion, Blackrock, Dublin, A94E338
D25B/0341Dún Laoghaire–RathdownLodged 13 Jun 2025Extension
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
Conversion of the attic space to a bedroom and ensuite. This will involve the construction of a dormered…
132, Millpark, Old Nangor Road, Clondalkin, Dublin, 22
SD20B/0165South DublinLodged 4 Jun 2020
- GrantedExtension
The conversion of the attic space to a bedroom, ensuite and storage, new velux window to the front new velux…
78, Dargle Wood, Knocklyon Road, Dublin 16
SD22B/0243South DublinLodged 30 May 2022
- GrantedExtension
Conversion of the existing attic space into a bedroom with en-suite facilities and all associated works. The…
21, Aranleigh Mount, Dublin 14
SD16B/0090South DublinLodged 29 Mar 2016
- GrantedExtension
Conversion of the attic space to a bedroom, ensuite and storage, new velux window to the front and two dormer…
34, Dargle Wood, Dublin 16
SD24B/0318WSouth DublinLodged 11 Jul 2024
- GrantedExtension
Conversion of attic space to a bedroom with ensuite shower room. The works will include a dormer window and…
3, Stratton Vale, Finnstown, Lucan, Co. Dublin
SD21B/0112South DublinLodged 5 Mar 2021
- GrantedExtension
The conversion of the existing attic space into a habitable space, comprising double ensuite bedroom, walk in…
No. 6 Waverly View , Greystones , A63 CK68
21590WicklowLodged 20 May 2021
Community
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