5 Crosthwaite Hall, Lower Glenageary Road, Glenageary, Co. Dublin
Construction of a single-storey flat roof side extension and alterations to the rear elevation.
D21B/0109 · Dun Laoghaire Rathdown County Council · Lodged 10 March 2021
- Reference
- D21B/0109
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 10 March 2021
Summary
AI-generatedThe development consists of a 9 sq.m single-storey flat roof extension with rooflights to the side of the existing house. It also includes alterations to the rear elevation, drainage, site works, boundary treatments, and landscaping.
- Storey
- 1
- Floor area
- 9 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
Permission is sought. The development will consist of a 9 sq. M a single storey flat roof extension with rooflights, to the side (north east) of the existing house, alterations to rear elevation and all associated ancillary works necessary to facilitate the development including drainage, site works, boundary treatments and landscaping.
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 |
|---|---|---|---|
| 2 Crosthwaite Park South, Dun Laoghaire, Dublin | Mar 2025 | €646,000 | 39 m |
| 3 Silchester Gardens, Silchester Road, Glenagearyprice excludes VAT | Aug 2025 | €1,850,220 | 54 m |
| Apt 2 Meryvn Court, Crostwaite Park South, Dun Laoghaire | Jul 2025 | €510,000 | 72 m |
| Kish View, 14 Crosthwaite Park South, Dun Laoghaire | Jun 2025 | €2,500,000 | 81 m |
| 10 Silchester Court, Glenageary, Dublin | Oct 2025 | €670,000 | 91 m |
| 5 Rus In Urbe Terrace, Glenageary Rd Lower, Dun Laoghaire | Nov 2025 | €2,150,000 | 106 m |
| 13 Silchester Court, Silchester Rd, Glenageary | Aug 2025 | €725,000 | 109 m |
| 6 Glengara Close, Glenageary Rd Lower, Dun Laoghaire | Apr 2025 | €653,000 | 110 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 received10 March 2021
- Decision issued30 April 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
Permission for development consisting of 1 dormer window to rear and 3 velux windows to front for the…
3, Crosthwaite Hall, Glenageary Road Lower, Dun Laoghaire, Co Dublin
D13B/0172Dún Laoghaire–RathdownLodged 21 May 2013Extension
- GrantedAt this site
Planning permission is sought for development which will consist of a new vehicular access with related works…
2 & 3, Crosthwaite Hall, Lower Glenageary Road, Dun Laoghaire, Co. Dublin
D11A/0304Dún Laoghaire–RathdownLodged 27 Jun 2011Alterations
- RefusedAt this site
Permission is sought for an extension to the rear and side of the existing detached dwelling in the rear…
Ashford, Glenageary Road Lower, Glenageary, Co. Dublin
D09A/0057Dún Laoghaire–RathdownLodged 29 Jan 2009Extension
- Granted30 m away
Enclosing existing roof terrace to create additional room and associated site works
2, Crosthwaite Park South, Dun Laoghaire, Co. Dublin
D03B/0921Dún Laoghaire–RathdownLodged 23 Dec 2003Extension
- Withdrawn30 m away
Enclosing existing roof terrace to create additional room and associated site works
2, Crosthwaite Park South, Dun Laoghaire, Co. Dublin
D03B/0444Dún Laoghaire–RathdownLodged 13 Jun 2003Extension
- Refused40 m away
Retention of use of a mews house as a caretakers flat. The mews is located to the rear of No. 4 Crosthwaite…
4, Crosthwaite Park South, Dun Laoghaire, Co. Dublin
D04A/0277Dún Laoghaire–RathdownLodged 18 Mar 2004Retention
- Granted40 m away
Retention of use of living room (part of Apartment No. 3 at ground floor level) for Home Based Economic…
4 Crosthwaite Park South, Dun Laoghaire, Co. Dublin. (Protected Structure)
D03A/0966Dún Laoghaire–RathdownLodged 10 Dec 2003Retention
- Granted50 m away
Retention planning permission is sought for alterations to the front south west boundary iron railings and…
8, Crosthwaite Park South, Dun Laoghaire, Co Dublin, (A Protected Structure)
D22A/0003Dún Laoghaire–RathdownLodged 5 Jan 2022Retention
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 for development. The development will consist of — Construction of a new flat roof first floor…
90 St. Begnet's Villas, Dalkey, Co. Dublin A96 CD79
D19B/0398Dún Laoghaire–RathdownLodged 27 Aug 2019
- GrantedExtension
Permission is sought for the construction of single storey extension with flat roof to the rear of existing…
No. 30, Pine Valley Park, Rathfarnham, Dublin 16
D15B/0444Dún Laoghaire–RathdownLodged 3 Dec 2015
- GrantedExtension
Permission for development. The development will consist of a new single storey extension with flat roof and…
54, Beaumont Avenue, Churchtown, Dublin 14
D20B/0418Dún Laoghaire–RathdownLodged 18 Dec 2020
- GrantedExtension
Permission for construction of a single storey extension with flat roof to the side and rear of existing…
19 Rathmichael Manor, Loughlinstown, Co Dublin
D17B/0079Dún Laoghaire–RathdownLodged 20 Feb 2017
- GrantedExtension
Permission is sought. The development will consist of: Construction of new single storey extension to rear…
6, Mariners Court, Dun Laoghaire, Co. Dublin
D16B/0422Dún Laoghaire–RathdownLodged 10 Oct 2016
- GrantedExtension
Permission is sought for a development consisting of: (01) Proposed two-storey flat roof extension to side…
65a Patrick Street, Dun Laoghaire, Co. Dublin, A96 RR76
D21B/0637Dún Laoghaire–RathdownLodged 19 Nov 2021
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