9, Rockville Park, Blackrock, Dublin, A94X478
Construction of a first-floor side extension over an existing utility room to create a home office in Blackrock.
D26B/0165/WEB · Dun Laoghaire Rathdown County Council · Lodged 23 March 2026
- Reference
- D26B/0165/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 23 March 2026
Summary
AI-generatedThe project involves building a new first-floor extension over the existing ground-floor utility room to the side of a semi-detached house. The new space will accommodate a home office, with internal alterations to integrate it into the single dwelling.
- 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
The construction of a new first floor extension over existing ground floor utility to the side of (semi-detached) house, to accommodate a home office, with internal alterations to facilitate access to and incorporation of the extension into single dwelling, with associated site 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 |
|---|---|---|---|
| 1 Rockville Park, Blackrock, Co Dublin | Apr 2026 | €865,000 | 44 m |
| 117 Rowanbyrn, Blackrock, Co Dublinnot full market price | Sept 2025 | €255,109 | 121 m |
| 22 Rockville Dr, Blackrock, Dublin | Apr 2026 | €1,230,000 | 184 m |
| 29 Marian Park, Blackrock, Dublin | Jun 2025 | €560,000 | 208 m |
| 10 Brooklawn Ave, Blackrock, Dublin | Mar 2026 | €700,000 | 217 m |
| 70 Castlebyrne Park, Blackrock, Dublin | Mar 2025 | €528,000 | 224 m |
| 49 Rockville Crescent, Blackrock, Dublin | Sept 2025 | €920,000 | 228 m |
| Errigal, 1 Rowan Park Ave, Blackrock | Oct 2025 | €1,300,000 | 239 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 received23 March 2026
- Decision due15 May 2026
- Decision issued7 May 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
Planning permission for development. The development will consist of the erection of a canopy over side…
9, Rockville Park, Blackrock, Co. Dublin
D16B/0544Dún Laoghaire–RathdownLodged 21 Dec 2016Extension
- GrantedAt this site
Extension to rear at ground and first floor levels to include velux windows and removal of existing flat roof…
11, ROCKVILLE PARK, BLACKROCK, CO. DUBLIN
D04B/0656Dún Laoghaire–RathdownLodged 25 Aug 2004Extension
- GrantedAt this site
Retention permission is sought for an air source heat pump and timber lattice type housing and for a wooden…
13 Rockville Park, Blackrock, Co. Dublin, A94C429
D22B/0230Dún Laoghaire–RathdownLodged 4 May 2022Retention
- GrantedAt this site
Permission is sought. The proposed development will consist of the removal of existing single storey…
13 Rockville Park, Blackrock, Co. Dublin (A94C429)
D20B/0228Dún Laoghaire–RathdownLodged 30 Jul 2020Extension
- Invalid50 m away
Permission sought for two storey dwelling house including new vehicular entrance at side of main location
21, Rockville Road, Blackrock, Co Dublin
D07A/0187Dún Laoghaire–RathdownLodged 13 Feb 2007New dwelling
- Granted50 m away
Permission is sought for a two storey dwelling house, including new vehicular entrance, at side of existing…
21, Rockville Road, Blackrock, Co Dublin
D07A/0497Dún Laoghaire–RathdownLodged 17 Jul 2007New dwelling
- Granted50 m away
Permission is sought for the construction of a single and two storey rear extension, raising the existing…
16 Rockville Park, Blackrock, Dublin, A94W672
D26B/0094/WEBDún Laoghaire–RathdownLodged 13 Feb 2026Extension
- Refused60 m away
Planning permission sought to erect a single storey extension to the rear and side of semi-detached home…
17, Rockville Road, Newtownpark Avenue, Blackrock, Co. Dublin
D09B/0204Dún Laoghaire–RathdownLodged 13 May 2009Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- Awaiting decisionExtension
Construction of a first–floor extension to a 3 bed semi–detached dwellinghouse above existing ground floor…
8 Oakfield Green, Brooklodge, Riverstown, Glanmire, Co. Cork
184825corkLodged 5 Apr 2018
- GrantedExtension
Construction of a first-floor extension to a 3 bed semi-detached dwellinghouse above existing ground floor…
8 Oakfield Green, Brooklodge, Riverstown, Glanmire, Co. Cork
185321corkLodged 23 May 2018
- GrantedExtension
Alterations to existing semi-detached two storey dwelling involving the construction of a new single storey…
3, Dodder Park Grove, Rathfarnham, Dublin 14, D14 E762
SD23B/0297South DublinLodged 10 Jul 2023
- GrantedExtension
Construction of single storey extension to the side of existing dwelling comprising of office, WC, utility…
17, Fforster Green, Ballydowd Manor, Lucan, Co. Dublin, K78 KX05
SD22B/0413South DublinLodged 30 Nov 2022
- InvalidExtension
Erection of a 1st floor extension over existing ground floor rear extension, conversion of attic space to…
53, Crumlin Road, Dublin 12
WEB1316/23Dublin CityLodged 14 Apr 2023
- GrantedExtension
Construction of two proposed single storey extensions to the existing dwelling, raising the walls and roof of…
Smiths Road, Rathgoggan Middle, Charleville, Co Cork
235478corkLodged 19 Jul 2023
Community
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