120 Mount Prospect Avenue, Clontarf, Dublin 3
Demolition of a rear extension, garage conversion, and construction of a part-single, part-two-storey extension at 120 Mount Prospect Avenue.
WEB2784/25 · Dublin City Council · Lodged 30 July 2025
- Reference
- WEB2784/25
- Authority
- Dublin City Council
- Register status
- Decided
- Type
- Permission
- Received
- 30 July 2025
Summary
AI-generatedThe development includes the demolition of an existing rear extension, converting the garage to living space, and building a part-single, part-two-storey rear and side extension. It also features a first-floor extension, a rear attic dormer, and widening of the vehicular entrance.
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
The development will comprise of: (i) demolition of the existing ground floor flat-roofed extension to the rear of the dwelling; (ii) conversion of the existing garage to habitable accommodation; (iii) construction of a part-single, part-two-storey flat-roofed extension to the rear and side of the existing dwelling with extended pitched roof; (iv) extension at first floor level to the side, front and rear of the dwelling; (v) a bay window to the front elevation; (vi) construction of a dormer structure at attic level to the rear of the dwelling; (vii) widening of the existing vehicular entrance onto mount prospect avenue to 3.2 metres; (viii) installation of 7 roof lights; and all ancillary works, associated landscaping, boundary treatments and ground works necessary to facilitate the development.
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 |
|---|---|---|---|
| 7 Prospect Bay, Mount Prospect Avenue, Dublin 3price excludes VAT | Jan 2025 | €629,956 | 92 m |
| 21 Prospect Bay, Mount Prospect Avenue, Clontarfprice excludes VAT | Nov 2025 | €514,675 | 92 m |
| 88 Mount Prospect Ave, Clontarf, Dublin 3 | May 2026 | €1,900,000 | 135 m |
| 53 Mount Prospect Grove, Clontarf, Dublin 3 | Sept 2025 | €785,000 | 163 m |
| 54 Mount Prospect Grove, Clontarf, Dublin 3 | Nov 2025 | €850,000 | 165 m |
| 69 Park Lawn, Clontarf, Dublin 3 | Jul 2025 | €950,000 | 176 m |
| 107 Mount Prospect Ave, Dublin 3, Dublin | Jan 2026 | €1,250,000 | 179 m |
| Apt 31, Seapark, Mount Prospect Ave Dublin 3not full market price | Jul 2025 | €360,000 | 213 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 received30 July 2025
- Decision due23 September 2025
- Decision issued23 September 2025
- Permission expiry12 December 2030
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Granted40 m away
Permission for the development consisting of the demolition of existing single storey extension and…
112 Mount Prospect Avenue, Clontarf, Dublin 3.
3947/21Dublin CityLodged 26 Nov 2021Extension
- Invalid40 m away
Planning permission for the development consisting of the demolition of existing single storey extension and…
112 Mount Prospect Avenue, Clontarf, Dublin 3
3870/21Dublin CityLodged 15 Nov 2021Extension
- Granted50 m away
Planning permission for conversion of attic to bedroom with new stairs, new dormer and velux to the rear roof…
10, Mount Prospect Grove, Clontarf, Dublin 3
2329/19Dublin CityLodged 22 Feb 2019Extension
- Granted50 m away
Erection of 1 No single storey detached habitable room (gross internal area 20.2m2) to include home…
Applegarth, 110 Mount Prospect Avenue, Dublin 3
WEB1969/25Dublin CityLodged 3 May 2025Extension
- Granted50 m away
Planning permission is sought for alterations and extensions to existing dwelling. The application includes…
130, Mount Prospect Avenue, Clontarf, Dublin 3
2824/21Dublin CityLodged 25 May 2021Extension
- Granted60 m away
PERMISSION & RETENTION: Retention of existing dormer window to the rear & for attic office/ storage area and…
7, Mount Prospect Grove, Clontarf, Dublin 3, D03 AC85
WEB1484/18Dublin CityLodged 20 Sept 2018Retention
- Granted70 m away
Conversion of his attic to storage, including changing the existing hipped end roof to a gable end roof, a…
5, Mount Prospect Grove, Clontarf, Dublin 3
WEB1051/18Dublin CityLodged 8 Feb 2018Extension
- Granted70 m away
RETENTION: Retention Permission is being sought for vehicular access to front, including 2 No. brick piers
20, Mount Prospect Grove, Clontarf, Dublin 3
WEB1029/18Dublin CityLodged 23 Jan 2018Retention
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
(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 2025
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The development will comprise: (i) demolition of single storey kitchen and storage annexe to rear; (ii)…
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WEB1572/25Dublin CityLodged 18 Mar 2025
- GrantedExtension
The development will comprise of: (i) conversion of the existing garage to habitable accommodation; (ii)…
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WEB2783/25Dublin CityLodged 30 Jul 2025
- InvalidExtension
The proposed development shall consist of: Demolition of existing single storey extension to rear;…
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3797/22Dublin CityLodged 22 Apr 2022
- GrantedExtension
The development will consist of — Demolition of existing single storey elements to rear of existing dwelling…
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D24A/0384/WEBDún Laoghaire–RathdownLodged 31 May 2024
- GrantedExtension
The development will consist of: Proposed alterations and extension to the existing house comprising…
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2150/18Dublin CityLodged 26 Jan 2018
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