Mostyn, 67 Mount Merrion Avenue, Blackrock, Co Dublin
Retention of a breakfast room and a two-storey bay window extension in Blackrock.
D19B/0189 · Dun Laoghaire Rathdown County Council · Lodged 10 April 2019
- Reference
- D19B/0189
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 10 April 2019
Summary
AI-generatedThis application seeks retention permission for a breakfast room extension at the rear ground floor level. It also seeks to retain a two-storey bay window extension at the rear of the property.
- Storeys
- 2
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 retention of breakfast room extension at rear ground floor level and a two storey bay window extension at rear.
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 |
|---|---|---|---|
| 17 Southwood Park, Mount Merrion, Blackrock | Mar 2025 | €1,580,000 | 127 m |
| 14 The Elms, Mount Merrion Ave, Blackrock | Apr 2025 | €470,000 | 147 m |
| 15 The Elms, Mount Merrion Ave, Blackrock | Mar 2026 | €490,000 | 147 m |
| 17 Hyde Park Avenue, Blackrock, Co Dublin | Dec 2025 | €1,600,000 | 170 m |
| 4 The Elms, Mount Merrion Ave, Blackrock | Sept 2025 | €500,000 | 173 m |
| Apt 4, Dawson Court, Cross Ave | Mar 2026 | €510,000 | 186 m |
| Apt 11, Dawson Court, Cross Ave | Jan 2025 | €480,000 | 186 m |
| 10 Dawson Court, Cross Ave, Blackrock | May 2026 | €527,000 | 186 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 received10 April 2019
- Decision issued4 June 2019
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
Widening of existing vehicular entrance, bay windows to front and two storey extensions incorporating living…
Mostyn, 67, Mount Merrion Avenue, Blackrock, Dublin
D07A/0725Dún Laoghaire–RathdownLodged 29 May 2007Extension
- Granted40 m away
Permission for development consisting of demolition of existing single storey extension to rear and proposed…
Glenside, 63, Mount Merrion Avenue, Blackrock, Co Dublin, A94Y6W3
D20A/0922Dún Laoghaire–RathdownLodged 9 Dec 2020Extension
- Granted40 m away
Permission for development consisting of: (1) Alterations to existing garage to include extension to front…
Glenside, 63, Mount Merrion Avenue, Blackrock, Co Dublin, A94Y6W3
D22A/0396Dún Laoghaire–RathdownLodged 10 Jun 2022Extension
- Refused40 m away
Demolition of existing two-storey house and outbuildings and construction of new-detached dwelling house. New…
2, Glenvar Park, Blackrock, Dublin
D07A/1624Dún Laoghaire–RathdownLodged 15 Feb 2008New dwelling
- Granted40 m away
Planning permission is sought for demolition of existing two-storey extension to front, single storey garages…
2, Glenvar Park, Blackrock, Co. Dublin
D08B/0675Dún Laoghaire–RathdownLodged 12 Sept 2008Extension
- Granted40 m away
Permission is sought for demolition of existing single storey extension to rear, one no. chimney and garage…
4, Glenvar Park, Blackrock, Co Dublin
D21A/0610Dún Laoghaire–RathdownLodged 30 Jun 2021Extension
- Granted70 m away
Permission for development consisting of Garage conversion, two-storey & single storey extension to rear and…
Abberley, 75, Mount Merrion Avenue, Blackrock, Co Dublin
D13A/0102Dún Laoghaire–RathdownLodged 8 Mar 2013Extension
- Granted70 m away
Railings to front garden to be contained within the existing curtilage and located on the inside of the…
82, Mount Merrion Avenue, Blackrock, Co. Dublin
D06A/0173Dún Laoghaire–RathdownLodged 9 Feb 2006Alterations
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 two storey extension to rear with alterations to floor plan with removal of rear…
16 The Avenue, Clonlea, Woodpark, Dublin 16
D15B/0055Dún Laoghaire–RathdownLodged 2 Mar 2015
- GrantedRetention
Permission for Retention of a single storey breakfast room extension constructed to the south-eastern side
Clifftops, Woodside Road, Sandyford, Dublin 18
D13B/0265Dún Laoghaire–RathdownLodged 26 Jul 2013
- GrantedRetention
Permission for the Retention of an existing 2 storey extension to the rear
10 Mulgrave Street, Dun Laoghaire, Co Dublin
D14B/0377Dún Laoghaire–RathdownLodged 6 Nov 2014
- GrantedRetention
Permission for retention of a two storey extension to the rear comprising of a new kitchen/lounge to ground…
No.11A Friar's Walk , Cork
1938485Cork CityLodged 25 Jun 2019
- GrantedRetention
Permission for retention of a two storey extension and minor alteration to elevation at rear of existing…
Castlepook North, Doneraile, Co. Cork,
206100corkLodged 25 Sept 2020
- GrantedRetention
Permission for retention of two storey extension to the rear of dwelling
8 Beechwood Place , Douglas Road , Cork
1837848Cork CityLodged 6 Apr 2018
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