23, Mount Prospect Avenue, Clontarf, Dublin 3
Replacement of a rear conservatory with a single-storey extension and various alterations to a house in Clontarf.
0188/25 · Dublin City Council · Lodged 6 May 2025
- Reference
- 0188/25
- Authority
- Dublin City Council
- Register status
- Decided
- Received
- 6 May 2025
Summary
AI-generatedThe project involves replacing an existing rear conservatory with a squared-off, energy-efficient single-storey extension on the same footprint. It also includes alterations to the rear kitchen window and patio doors, reinstating the original front building line at ground floor level, and installing a new rooflight.
- 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
- Expp
- Replacement of the existing rear conservatory with a squared-off, energy-efficient single-storey extension on the same footprint, featuring a warm flat roof with two rooflights, high-performance insulation, and a brick external finish to match the front elevation
- Alterations to the rear elevation include a reduction in the width of the kitchen window and widening of the patio doors
- Reinstatement of the original front building line at ground floor level by relocating the stepped-back wall and window of bedroom 5 to align with the first-floor facade
- Installation of a rooflight to bedroom 4 on the north-east facing roof slope
- Alterations and renovations to improve the internal layout. All structural modifications will be certified by a competent structural engineer
- At present, the floor level is stepped internally throughout. We propose that the finished floor level is 200mm above the external ground level. At present, it is 385mm. Door head heights and window head heights are to be maintained with the removal of one front porch step
- At present, there are coin stones on the front elevation at first floor. At the right-center and left, we propose to remove the coin stones from the center
Land-use zoning
What this land is zoned for
“To protect, provide and improve residential amenities.”
National zoning type: Existing residential
Objective set by the 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 |
|---|---|---|---|
| 13 Mount Prospect Ave, Clontarf, Dublin 3 | Jun 2025 | €999,950 | 51 m |
| 22 Vernon Park, Clontarf, Dublin 3 | Sept 2025 | €815,000 | 70 m |
| 21 Vernon Park, Clontarf, Dublin 3 | May 2025 | €828,000 | 75 m |
| 47 Mount Prospect Ave, Clontarf, Dublin 3 | Jan 2026 | €2,500,000 | 125 m |
| 39 Vernon Heath, Clontarf, Dublin 3 | May 2025 | €1,100,000 | 133 m |
| Apt 40, Belgrove Park, Mount Prospect Ave Dublin 3 | Jun 2026 | €515,000 | 134 m |
| Apt 33 Belgrove Park, Mt Prospect Lawns, Mt Prospect Ave Dublin 3 | Oct 2025 | €476,000 | 138 m |
| 53 Vernon Park, Clontarf, Dublin 3 | Feb 2026 | €820,000 | 148 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 received6 May 2025
- Decision due3 June 2025
- Decision issued3 June 2025
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 sought for: (i) On the south elevation: extension and alterations to existing…
23 Mount Prospect Avenue, Clontarf, Dublin 3
WEB1008/26Dublin CityLodged 5 Jan 2026Extension
- Granted40 m away
The development will consist of the demolition of an existing rear single storey extension and garage and the…
31 Mount Prospect Avenue, Clontarf, Dublin 3, D03 EV20
WEB2420/25Dublin CityLodged 18 Jun 2025Extension
- Granted50 m away
The development will comprise of: (i) conversion of the existing garage to habitable accommodation; (ii)…
24, Vernon Park, Clontarf, Dublin 3
WEB2783/25Dublin CityLodged 30 Jul 2025Extension
- Withdrawn60 m away
Planning Permission is sought for works to the existing two storey detached dwelling at 14A Mount Prospect…
14A, Mount Prospect Avenue, Clontarf East, Dublin 3
WEB2705/24Dublin CityLodged 12 Dec 2024Extension
- Granted60 m away
Garage conversion for extended living. Single-storey extension to the front and side. Two-storey extension to…
11, Mount Prospect Avenue, Dublin 3 D03 HE65
WEB1773/23Dublin CityLodged 14 Sept 2023Extension
- Invalid60 m away
Garage conversion for extended living. Single-storey extension to the front and side. Two-story extension to…
11, Mount Prospect Avenue, Dublin 3 D03 HE65
WEB1744/23Dublin CityLodged 4 Sept 2023Extension
- Granted70 m away
(i) demolition of the external storage area at the side/rear of the dwelling; (ii) construction of a single…
14A, Mount Prospect Avenue, Dublin 3
WEB5740/25Dublin CityLodged 19 Nov 2025Extension
- Granted90 m away
The development will comprise of the demolition of the existing side extension and rear conservatory (58…
34, Vernon Park, Clontarf, Dublin 3, D03 XW63
WEB2314/24Dublin CityLodged 17 Oct 2024Extension
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 sought for: (i) On the south elevation: extension and alterations to existing…
23 Mount Prospect Avenue, Clontarf, Dublin 3
WEB1008/26Dublin CityLodged 5 Jan 2026
- Part granted, part refusedExtension
EXPP: The proposed development includes — Demolition of existing single-storey monopitch rear extension and…
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0486/25Dublin CityLodged 10 Nov 2025
- Part granted, part refusedAlterations
EXPP: The proposal includes replacing existing windows and door at the front, modifying existing openings and…
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0108/24Dublin CityLodged 25 Mar 2024
- Exempt — no permission neededExtension
EXPP: Extend existing extension to total size of 20m squared. It is proposed to carry out the following works…
10 Goldenbridge Terrace, Inchicore, D08 V08W
0472/25Dublin CityLodged 3 Nov 2025
- InvalidExtension
(1) The removal of the existing conservatory to the rear of the existing house, the removal of the existing…
29 Convent Road, Dalkey, Co. Dublin, A96A9W4 - ACA
D26A/0519/WEBDún Laoghaire–RathdownLodged 7 Jul 2026
- Exempt — no permission neededExtension
EXPP — Demolition of an existing single storey rear extension and part of the rear ground floor wall of an…
41 Maywood Avenue, Raheny, Dublin 5
0215/26Dublin CityLodged 26 May 2026
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