20 Lower Mounttown Road, Dún Laoghaire, Co Dublin
Retention of minor alterations to an approved house extension and attic conversion in Dún Laoghaire.
D15B/0259 · Dun Laoghaire Rathdown County Council · Lodged 2 July 2015
- Reference
- D15B/0259
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 2 July 2015
Summary
AI-generatedThis application seeks retention permission for minor alterations made to a previously approved extension and attic conversion. Changes include a new front canopy, the omission of a front extension, and adjustments to the rear extension.
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 for the retention of minor alterations to previously approved and constructed house extension and attic conversion ref. No. D09a/0120 and addition of canopy with pitched roof to the front; omission of extension tot he front; omission of two roof lights to the side, amendments to the rear extension and all associated site development 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 |
|---|---|---|---|
| 7 Mounttown Villas, Mounttown Lower, Mounttown | Mar 2026 | €480,100 | 35 m |
| 54 Mounttown Rd Lower, Dun Laoghaire, Dublin | Jan 2026 | €940,000 | 56 m |
| Sunnybank, 1 Mounttown Park, Dun Laoghaire | Jan 2025 | €1,250,000 | 73 m |
| 58 Hightorn Park, Mounttown, Dun Laoghaire | May 2025 | €710,000 | 117 m |
| Apt 14, Woodlawn House, Lower Mounttown | Apr 2026 | €475,000 | 126 m |
| 1 Woodlawn House, Woodlawn Park, Dun Laoghaire | May 2026 | €441,000 | 126 m |
| 44mounttown Road, Monkstown, Dublin | Dec 2025 | €985,000 | 131 m |
| 44 Highthorn Park, Dun Laoghaire, Co Dublin | Jun 2026 | €578,000 | 156 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 received2 July 2015
- Decision issued26 August 2015
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
Single storey extension to the rear and to the side, single storey porch to the front, attic conversion and 2…
20, Lower Mounttown Road, Dun Laoghaire, Co. Dublin
D09A/0120Dún Laoghaire–RathdownLodged 14 Apr 2009Extension
- GrantedAt this site
For attic conversion for storage with dormer roof to the rear and side, roof light to the front and all…
21, Lower Mounttown Road, Dun Laoghaire, Co. Dublin
D06B/0362Dún Laoghaire–RathdownLodged 27 Apr 2006Extension
- GrantedAt this site
Permission for: A. Demolition of existing single storey extension to rear. B. Proposed single storey flat &…
19 Mounttown Road Lower, Dún Laoghaire, Co Dublin
D17B/0314Dún Laoghaire–RathdownLodged 29 Jun 2017Extension
- GrantedAt this site
Permission sought for conversion of the attic space with pitched roof dormer to side. 2 Velux type roof…
19, Lower Mounttown Road, Dun Laoghaire, Co Dublin, A96T8W5
D22B/0160Dún Laoghaire–RathdownLodged 29 Mar 2022Extension
- 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
- 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
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
- Granted60 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
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedRetention
Permission for Retention of alterations to previously approved works (File. Ref: D08B/0808) including revised…
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D18B/0043Dún Laoghaire–RathdownLodged 1 Feb 2018
- GrantedRetention
Permission to retain side and rear domestic extension, including — Modifications to original elevations
32 McGrath Park , Church Road , Blackrock
2039574Cork CityLodged 2 Oct 2020
- GrantedExtension
Permission for development consisting of construction of single storey extension to the side of existing…
31, Richmond Avenue, Monkstown, Co. Dublin
D14B/0243Dún Laoghaire–RathdownLodged 7 Jul 2014
- GrantedExtension
Permission for alterations and extensions to an existing dwelling including a 2-storey and part single-storey…
29 Belmont Park , Ballinlough , Cork
2241558Cork CityLodged 15 Nov 2022
- GrantedExtension
Permission for a new dormer extension to the existing rear elevation, associated attic conversion,…
Charlestown Road , Ballaghaderreen , Co Roscommon F45 XD61.
23111RoscommonLodged 4 Apr 2023
- RefusedExtension
Permission for development consisting of: alterations and extension to the existing two storey house to…
12, Cloister Close, Blackrock, Co. Dublin
D14B/0046Dún Laoghaire–RathdownLodged 19 Feb 2014
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