42 Granville Park, Blackrock, Co. Dublin, A94 HY40
Extensions and alterations to a detached house in Blackrock, including a garden home office.
D22A/0069 · Dun Laoghaire Rathdown County Council · Lodged 31 January 2022
- Reference
- D22A/0069
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 31 January 2022
Summary
AI-generatedThe development includes a front porch extension, garage conversion, and attic conversion with rooflights. It also features a rear pergola, a flat-roof garden home office, and widened vehicular gates.
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 an extension to a detached dwelling. Development will consist of - single storey flat roof porch extension to front, garage conversion, attic conversion with 5no. Velux rooflights and 2no. New windows at first floor level; internal modifications, outdoor pergola structure to rear patio, flat roof garden structure (home office) in the rear garden, widen existing vehicular gates and 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 |
|---|---|---|---|
| 59 Granville Park, Blackrock, Dublin | May 2026 | €1,140,000 | 128 m |
| 66 Granville Park, Blackrock, Co Dublin | Jul 2025 | €995,000 | 161 m |
| 3 Knocksinna Wood, Blackrock, County Dublin | Mar 2026 | €1,130,000 | 191 m |
| 5 Knocksinna Wood, Blackrock, Co. Dublin | Jul 2025 | €1,010,000 | 203 m |
| 21 Park Ave, Blackrock, Dublin | Apr 2026 | €985,000 | 208 m |
| 10 New Grange Rd, Blackrock, Dublin | Sept 2025 | €950,000 | 223 m |
| 29 Holly Park Ave, Blackrock, Dublin | May 2025 | €1,010,000 | 235 m |
| 108 Foxrock Ave, Foxrock, Dublin 18 | Feb 2025 | €1,100,000 | 243 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 received31 January 2022
- Decision issued16 March 2022
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Granted30 m away
Construction of revised zinc-clad rear dormers to the south and east elevations. Construction of a revised…
38, Granville Park, Newpark, Blackrock, Co. Dublin, A94TW93
D26B/0106/WEBDún Laoghaire–RathdownLodged 23 Feb 2026Alterations
- Invalid30 m away
Construction of revised zinc-clad rear dormers to the south and east elevations.Construction of a revised…
38, Granville Park, Blackrock, Dublin, A94TW93
D26B/0101/WEBDún Laoghaire–RathdownLodged 19 Feb 2026Extension
- Granted30 m away
Planning permission is sought for the erection of a new single storey extension to the rear, removal of part…
46, Granville Park, Blackrock, Co. Dublin
D09A/0677Dún Laoghaire–RathdownLodged 22 Dec 2009Extension
- Granted30 m away
Permission for works to existing single storey detached house comprising partial attic conversion with…
46, Granville Park, Blackrock, Co. Dublin, A94 RK53
D18A/0195Dún Laoghaire–RathdownLodged 6 Mar 2018Extension
- Refused30 m away
The erection of a new single storey extension to the rear, removal of the existing roof in order to provide…
Dunraven, 46, Granville Park, Blackrock, Dublin
D08A/0793Dún Laoghaire–RathdownLodged 8 Jul 2008Extension
- Refused30 m away
Permission for changing of hipped roof at front l.h.s. to new raised brickwork gable wall to match existing…
38 Granville Park, Blackrock, Co Dublin
D18A/1016Dún Laoghaire–RathdownLodged 31 Oct 2018Extension
- Granted30 m away
Permission for changing of hipped roof at front l.h.s. to new raised brickwork gable wall to match existing…
38 Granville Park, Blackrock, Co Dublin
D19A/0163Dún Laoghaire–RathdownLodged 8 Mar 2019Extension
- Part granted, part refused30 m away
Construction of a new front porch, Construction of a new zinc-clad rear and side dormer (East and South),…
38, Granville Park, Newpark, Blackrock, Co. Dublin, A94TW93
D25B/0674/WEBDún Laoghaire–RathdownLodged 4 Dec 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.
- RefusedExtension
Permission is sought for an extension to a detached dwelling. Development will consist of - demolition of an…
173 Orwell Road, Dublin 14, D14 EV25
D22A/0453Dún Laoghaire–RathdownLodged 24 Jun 2022
- GrantedExtension
Permission is sought for extensions and alterations to a detached dwelling. The development will consist of…
128, Merrion Road, Dublin 4
WEB1611/26Dublin CityLodged 16 Mar 2026
- GrantedExtension
Permission is sought for construction of a two storey extension to the side and rear and single storey…
6, Bellevue Avenue, Glenageary, Co. Dublin
D15B/0427Dún Laoghaire–RathdownLodged 24 Nov 2015
- GrantedExtension
Permission is sought for construction of single storey extension to the rear of existing house; new single…
25, Fairyhill, Blackrock, Co. Dublin
D13B/0297Dún Laoghaire–RathdownLodged 9 Sept 2013
- GrantedExtension
Permission sought for conversion and ground floor extensions to side and rear of garage; ground floor…
67, Carysfort Downs, Blackrock, Co. Dublin.
D05A/0945Dún Laoghaire–RathdownLodged 22 Nov 2005
- GrantedExtension
Permission is sought for additions and alterations to detached dwelling including modifications to interior…
14, Mount Anville Lawn, Mount Anville, Dublin 14, D14X754
D25A/0337Dún Laoghaire–RathdownLodged 25 Apr 2025
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.