64 Highthorn Park, Glenageary, Co. Dublin
Retention of a single-storey rear extension and front window alterations.
D21B/0046 · Dun Laoghaire Rathdown County Council · Lodged 11 February 2021
- Reference
- D21B/0046
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 11 February 2021
Summary
AI-generatedRetention permission is sought for an existing single-storey extension to the rear of the house with a floor area of 43 square metres. The application also includes retention of alterations made to a ground floor window at the front of the property.
- Floor area
- 43 m²
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
Retention permission for a single storey rear extension (floor area 43 sq. M. ) and alterations to one ground floor window to the front of the house.
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 |
|---|---|---|---|
| 58 Hightorn Park, Mounttown, Dun Laoghaire | May 2025 | €710,000 | 26 m |
| 44 Highthorn Park, Dun Laoghaire, Co Dublin | Jun 2026 | €578,000 | 80 m |
| 7 Mounttown Villas, Mounttown Lower, Mounttown | Mar 2026 | €480,100 | 120 m |
| Sunnybank, 1 Mounttown Park, Dun Laoghaire | Jan 2025 | €1,250,000 | 134 m |
| 2 Cualanor Crescent, Monkstown, Dun Laoghaire | Dec 2025 | €1,260,000 | 153 m |
| 18 Highthorn Park, Dun Laoghaire, Dublin | May 2025 | €810,000 | 155 m |
| Apt 14, Woodlawn House, Lower Mounttown | Apr 2026 | €475,000 | 158 m |
| 1 Woodlawn House, Woodlawn Park, Dun Laoghaire | May 2026 | €441,000 | 158 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 received11 February 2021
- Decision issued31 March 2021
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
Proposed new driveway and vehicular entrance to front of existing two storey mid-terrace residence.…
66, Highthorne Park, Mounttown, Dun Laoghaire, Co. Dublin
D08A/0310Dún Laoghaire–RathdownLodged 14 Mar 2008Alterations
- GrantedAt this site
Permission for the demolition of the front garden wall and construction of gate and piers with dished…
70 Highthorn Park, Dun Laoghaire, Co Dublin
D14A/0866Dún Laoghaire–RathdownLodged 23 Dec 2014Alterations
- InvalidAt this site
Permission for the demolition of the front garden wall and construction of gate and piers with dished pavement
70 Highthorn Park, Dun Laoghaire, Co Dublin
D14A/0531Dún Laoghaire–RathdownLodged 14 Aug 2014Alterations
- Granted50 m away
Planning permission consisting of the new construction of a 42SQM ground floor rear extension, 10SQM rear…
37, Highthorn Park, Glenageary, Co. Dublin, A96E0X6
D22B/0237Dún Laoghaire–RathdownLodged 12 Sept 2022Extension
- Granted50 m away
Demolition of existing garage and replacing it with an new Utility Room and Playroom (20sqm in total)
39, Highthorn Park, Dun Laoghaire, Dublin
D06B/0615Dún Laoghaire–RathdownLodged 6 Jul 2006Extension
- Granted50 m away
Permission is sought for a dormer window to the rear and 1 Velux window to front of existing roof and…
37, Highthorn Park, Dun Laoghaire, Co. Dublin
D12B/0119Dún Laoghaire–RathdownLodged 12 Apr 2012Extension
- Granted50 m away
Garage conversion to habitable use, including raising of the flat roof to the side; single-storey flat-roof…
39, Highthorn Park, Mounttown, Co. Dublin, A96F5P7
D26B/0070/WEBDún Laoghaire–RathdownLodged 6 Feb 2026Extension
- Granted50 m away
Permission is sought for a dormer window to the rear and 1 velux window to front of existing roof and…
39 Highthorn Park, Dún Laoghaire, Co Dublin
D17B/0457Dún Laoghaire–RathdownLodged 4 Oct 2017Extension
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 decisionRetention
Retention permission for a single storey extension (floor area 44 sq.m.) to the rear and side of dwelling and…
42, Sweetbriar Lane, Kilmacud, Dublin 14, D14F304
D26B/0105/WEBDún Laoghaire–RathdownLodged 20 Feb 2026
- WithdrawnRetention
Retention permission for a single storey extension (32.5sqm) to the rear, including associated site works,…
8, Saint Thomas Mead, Mount Merrion, Blackrock, Dublin, A94N902
D24B/0201Dún Laoghaire–RathdownLodged 29 Apr 2024
- GrantedRetention
RETENTION: Retention permission of a rear first floor extension, a new window and increase in size of an…
3 Clontarf Park, Dublin 3, D03 X950
3257/20Dublin CityLodged 27 Aug 2020
- GrantedRetention
Retention permission for a single storey extension to the rear of existing house along with ancillary works
127 Newtownpark Avenue, Blackrock, Co. Dublin
D22B/0128Dún Laoghaire–RathdownLodged 11 Mar 2022
- GrantedRetention
RETENTION: Retention permission for single storey ground floor rear extension with 2 no. rooflights and a…
42, Martin Street, Portabello, Dublin 8
2348/19Dublin CityLodged 25 Feb 2019
- InvalidExtension
PERMISSION & RETENTION: New single-storey rear extension (26.5 sq.m) consisting of a new bedroom/ study and…
2, Maiden's Row, Chapelizod, Dublin 20, D20 XE14
3749/24Dublin CityLodged 24 May 2024
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.