21 Mount Symon Dale, Clonsilla, Dublin 15
A single-storey rear and side extension to a house in Clonsilla.
FW21A/0201 · Fingal County Council · Lodged 26 October 2021
- Reference
- FW21A/0201
- Authority
- Fingal County Council
- Register status
- Decided
- Type
- Permission
- Received
- 26 October 2021
Summary
AI-generatedThe application seeks permission for a single-storey extension to the rear and side of the existing residential property.
- Storey
- 1
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 a single storey extension to the rear and side incorpor
Land-use zoning
What this land is zoned for
“Provide for residential development and protect and improve residential amenity”
National zoning type: Existing residential
Objective set by the The Fingal Development Plan 2023 – 2029 (2023–2029). 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 25 October 2022.
Notified floor area: 20 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 23 Mount Symon Dale, Clonsilla, Dublin 15 | Aug 2025 | €480,000 | 5 m |
| 78 Allendale Sq, Clonsilla, Dublin 15 | Dec 2025 | €362,500 | 108 m |
| 74 Allendale Sq, Clonsilla, Dublin 15 | May 2025 | €347,000 | 108 m |
| 17 Mount Symon Green, Clonsilla, Dublin 15not full market price | Apr 2026 | €185,000 | 114 m |
| 14 Mount Symon Green, Clonsilla, Dublin 15 | Oct 2025 | €562,000 | 123 m |
| 91 Allendale Sq, Clonsilla, Dublin 15 | Feb 2026 | €316,000 | 140 m |
| 33 Mount Symon Green, Clonsilla, Dublin 15 | Jun 2025 | €521,000 | 146 m |
| 137 Allendale Sq, Clonsilla Dublin 15, Dublin | May 2025 | €335,000 | 169 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 received26 October 2021
- Decision due17 December 2021
- Decision issued14 December 2021
- Grant issued28 January 2022
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 side incorporating a new dinin
21 Mount Symon Dale, Clonsilla, Dublin 15
FW22B/0066FingalLodged 23 May 2022Extension
- GrantedAt this site
The development consists of conversion of attic space with extension o
25 Mount Symon Dale, Clonsilla, Dublin 15
FW20B/0035FingalLodged 3 Mar 2020Extension
- Granted30 m away
Single storey extension to the rear, an attic conversion, and extensio
31 Mount Symon Dale, Clonsilla, Dublin 15
FW19B/0135FingalLodged 31 Oct 2019Extension
- Granted40 m away
A new attic dormer roof extension to rear of 2 storey end terrace dwel
63 Allendale Square, Clonsilla, Dublin 15, D15 C6V6
FW25A/0396EFingalLodged 16 Sept 2025Extension
- Awaiting decision50 m away
The development will consist of single storey extension to rear, alterations to the existing hip roof to…
35 Mount Symon Dale, Clonsilla, Dublin 15, D15 A3V1
FW26A/0232EFingalLodged 8 Jun 2026Extension
- Granted80 m away
Permission is sought to demolish existing front two storey bay window and single storey porch canopy along…
43 Mount Symon Dale, Clonsilla, Dublin 15, D15P0K5
FW25A/0488EFingalLodged 18 Nov 2025Extension
- Invalid90 m away
The development will consist of widening the existing vehicular entrance at the front of the property to 4m…
19 Mount Symon Crescent, Clonsilla, Dublin 15, D15 WK8P
FW26A/0218EFingalLodged 2 Jun 2026Extension
- Awaiting decision90 m away
The development will consist of widening the existing vehicular entrance at the front of the property to 4m…
19 Mount Symon Crescent, Clonsilla, Dublin 15, D15 WK8P
FW26A/0244EFingalLodged 15 Jun 2026Extension
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 a single storey extension to the side and rear
6 Riverwood Grove, Castleknock, Dublin 15
FW14B/0035FingalLodged 16 May 2014
- GrantedExtension
Permission to construct a single storey extension to the rear and to the side
8, Ardlui Park, Newtownpark Avenue, Blackrock, Co. Dublin
D14B/0056Dún Laoghaire–RathdownLodged 16 May 2014
- GrantedExtension
Permission to construct a single storey extension to the side and rear
110, Shrewsbury Lawn, Cabinteely, Dublin 18
D09B/0027Dún Laoghaire–RathdownLodged 22 Jan 2009
- GrantedExtension
Permission to construct a single storey extension to rhe side and rear
5 River Valley Avenue, Swords, Co Dublin
F21B/0105FingalLodged 31 Mar 2021
- GrantedExtension
Permission for construction of a single storey extension to side and rear
26 Glenbourne Walk, Leopardstown Valley, Dublin 18
D16B/0301Dún Laoghaire–RathdownLodged 8 Jul 2016
- GrantedExtension
Permission for the erection of a single storey rear and side extension
Coolgarrow, Ballyhuskard
20240049WexfordLodged 22 Jan 2024
Community
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