22, Monkstown Avenue, Monkstown, Blackrock, Dublin, A94X3N1
Construction of a 40sqm extension, including a single-storey rear addition and a first-floor side extension.
D23B/0529 · Dun Laoghaire Rathdown County Council · Lodged 17 November 2023
- Reference
- D23B/0529
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 17 November 2023
Summary
AI-generatedThe application seeks permission for a 40sqm extension on the south-west side of the property. This includes an 11.5sqm single-storey rear addition and a 28.5sqm first-floor side extension over the existing single-storey element, along with three new front roof windows.
- Floor area
- 40 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
40sqm extension (on south-west side), as follows: (a) new 11.5sqm single storey addition to rear. (b) new 28.5 sqm first floor extension (to side) above existing single storey element. (c) associated site and drainage works. (d) 3 new velux roof windows to front elevation.
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.
Built — construction complete
A commencement notice records works starting on 19 June 2025.
Notified floor area: 40 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 25 Monkstown Avenue, Monkstown, Co Dublin | May 2025 | €1,345,000 | 34 m |
| 29 Monkstown Ave, Monkstown, Dublin | Oct 2025 | €964,000 | 75 m |
| 67 Monkstown Ave, Blackrock, Dublin | Apr 2026 | €470,000 | 124 m |
| 22 Ashton Park, Monkstown, Co Dublin | Feb 2025 | €1,620,000 | 124 m |
| 31 Park House, Palmerston Rd, Ranelagh Dublin 6 | Mar 2025 | €360,000 | 146 m |
| 19 Monkstown Farm, Dun Laoghaire, Dublin | Jan 2025 | €312,500 | 203 m |
| 18 Lanesville, Glenageary, Dublin | May 2026 | €690,000 | 204 m |
| 28 Richmond Grove, Monkstown, Dublin | Nov 2025 | €1,120,000 | 206 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 received17 November 2023
- Decision due19 January 2024
- Decision issued12 January 2024
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 single storey extension to front of previously converted garage and porch to front elevation.…
21 Monkstown Avenue, Monkstown, Co Dublin
D16A/0112Dún Laoghaire–RathdownLodged 24 Feb 2016Extension
- GrantedAt this site
Permission is sought for works to existing 2-storey semi-detached dwelling - consisting of demolition of…
24 Monkstown Avenue, Monkstown, Co. Dublin, A94 K4K3
D20A/0676Dún Laoghaire–RathdownLodged 22 Sept 2020Extension
- Withdrawn30 m away
Permission for development. The development will consist of alterations to existing vehicular entrance gate,…
25 Monkstown Avenue, Monkstown, Co. Dublin, A94 X0H1
D22A/0105Dún Laoghaire–RathdownLodged 14 Feb 2022Alterations
- Granted30 m away
Permission for development. The development will consist of alterations to existing vehicular entrance gate,…
25 Monkstown Avenue, Monkstown, Co. Dublin
D22A/0158Dún Laoghaire–RathdownLodged 7 Mar 2022Alterations
- Granted40 m away
Retention of single storey, kitchen, bedroom and bathroom extension
Dunedin, 20, Monkstown Avenue, Monkstown, Co. Dublin
D07B/0880Dún Laoghaire–RathdownLodged 22 Oct 2007Retention
- Granted40 m away
Permission is sought for the demolition of a 5sqm single storey extension to the rear and the subsequent…
26, Monkstown Avenue, Monkstown, Co Dublin
D07B/0392Dún Laoghaire–RathdownLodged 1 May 2007Extension
- Granted60 m away
Retention for 3 detached flat-roofed single-storey modular buildings namely Classroom 6 (88.18sqm comprising…
Dun Laoghaire ETNS, The Red Door School, Monkstown Grove, Monkstown, Blackrock, Dublin, A94D3H7
D24A/0230Dún Laoghaire–RathdownLodged 9 Apr 2024Retention
- Granted60 m away
Second floor bedroom extension to rear of previously permitted two storey family flat to side and single -…
28, Monkstown Avenue, Dun Laoghaire, Co. Dublin.
D05B/0403Dún Laoghaire–RathdownLodged 1 Jun 2005Extension
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
Construction of single storey extension to the rear and first floor extension to the side over existing…
1, Springfield Road, Dublin 6w
SD15B/0080South DublinLodged 19 Mar 2015
- GrantedExtension
A single storey extension to the rear and a first-floor extension to the side over existing rooms below, with…
27 The Glade , Oldtown Mill , Celbridge
19436KildareLodged 23 Apr 2019
- GrantedExtension
Construction of a rear ground floor extension and a side extension at first-floor level, skylight over the…
72, Taney Crescent, Drummartin, Dublin 14, D14P201
D23B/0264Dún Laoghaire–RathdownLodged 25 Aug 2023
- GrantedExtension
Construction of new single storey extension to the rear and first floor extension to the side over existing…
31, Kilvere, Rathfarnham, Dublin 14
SD14B/0195South DublinLodged 17 Jul 2014
- GrantedExtension
To extend and alter existing house. The development consists of: Single storey extension at rear east…
Pine View , Kill Hill (Slí na Naomh) , Kill
171055KildareLodged 21 Sept 2017
- GrantedExtension
Construct a single storey extension to the left side and rear of property with 3 'Velux' type roof windows to…
10, Willsbrook Green, Lucan, Co. Dublin
SD21B/0633South DublinLodged 17 Dec 2021
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.