99 Mount Merrion Avenue, Blackrock, Co. Dublin
Demolition of rear extensions and conservatory to build a new two-storey rear extension.
D21B/0679 · Dun Laoghaire Rathdown County Council · Lodged 13 December 2021
- Reference
- D21B/0679
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 13 December 2021
Summary
AI-generatedThe project at Mount Merrion Avenue involves the demolition of existing rear extensions and a conservatory. In their place, a new two-storey extension will be constructed at the rear of the property, alongside modifications to the existing rear roof and installation of a new rooflight.
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 to carry out the following works: (a) demolition of existing rear extensions and conservatory, (b) construction of new two-storey extension to the rear, (c) modifications to existing rear roof, including installation of new roof light, (d) associated site 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 |
|---|---|---|---|
| Apt 158 - The Elms, Mount Merrion Avenue, Co Dublin | Nov 2025 | €641,000 | 79 m |
| 9 Glenart, Clonfadda Wood, Mount Merrion Ave | Mar 2026 | €600,000 | 96 m |
| 1 Glenart, Clonfadda Wood, Mount Merrion Ave | Nov 2025 | €685,000 | 96 m |
| 5 Glenart, Clonfadda Wood, Mount Merrion Ave | Nov 2025 | €491,000 | 96 m |
| Apt 4, Waltham, Clonfadda Wood | Oct 2025 | €635,000 | 114 m |
| 13 Villa Nova, Mount Merrion Ave, Blackrock | Mar 2026 | €540,000 | 147 m |
| 4 The Elms, Mount Merrion Ave, Blackrock | Sept 2025 | €500,000 | 158 m |
| 26 Woodlands Grove, Blackrockprice excludes VAT | Apr 2026 | €1,233,480 | 178 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 received13 December 2021
- Decision issued1 February 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
Permission to carry out the following works: (a) demolition of existing rear extensions and conservatory, (b)…
99 Mount Merrion Avenue, Blackrock, Co. Dublin
D22B/0046Dún Laoghaire–RathdownLodged 14 Sept 2022Extension
- GrantedAt this site
For formation of vehicular access gates to front boundary wall and off-street car parking to front
101, Mount Merrion Avenue, Blackrock, Co. Dublin
D05A/1477Dún Laoghaire–RathdownLodged 17 Nov 2005Alterations
- GrantedAt this site
Permission for new vehicular entrance and associated external works to dwelling
97 Mount Merrion Avenue, Blackrock, Dublin A94A 6R6
D16A/0524Dún Laoghaire–RathdownLodged 15 Jul 2016Alterations
- Granted30 m away
Planning permission for the demolition of the existing bay window and erection of a single storey flat roof…
105, Mount Merrion Avenue, Blackrock, Co. Dublin
D09B/0314Dún Laoghaire–RathdownLodged 16 Jul 2009Extension
- Granted40 m away
(a) Retention of vehicular cross over, access gates and off street parking for 2 car to front drive, and (b)…
107, Mount Merrion Avenue, Blackrock, Co. Dublin
D06A/0845Dún Laoghaire–RathdownLodged 16 Jun 2006Retention
- Granted50 m away
For a single storey extension at the side and extension of the garage for use as a studio/workshop, and…
28, Clonfadda, Mount Merrion Avenue, Blackrock, Co. Dublin
D04A/0834Dún Laoghaire–RathdownLodged 23 Jul 2004Extension
- Granted50 m away
To convert existing pedestrian entrance at front of house to enable car access and off-street parking
109, Mount Merrion Avenue, Blackrock, Co. Dublin
D04A/0776Dún Laoghaire–RathdownLodged 12 Jul 2004Alterations
- Granted50 m away
For revisions to the approved plan (Reg.No. D04A/0834) for a pitched roof to the single storey extension at…
28, Clonfadda Wood, Mount Merrion Avenue, Blackrock, Co. Dublin
D05A/0385Dún Laoghaire–RathdownLodged 30 Mar 2005Alterations
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 to carry out the following works: (a) demolition of existing rear extensions and conservatory, (b)…
99 Mount Merrion Avenue, Blackrock, Co. Dublin
D22B/0046Dún Laoghaire–RathdownLodged 14 Sept 2022
- GrantedExtension
Permission for (1) Demolition of the rear ground floor extension, (2) Construction of a two storey extension…
Riversdale , 46 Farranlea Park , Model Farm Road
2140729Cork CityLodged 10 Dec 2021
- GrantedExtension
Permission for the demolition of an existing rear extension, new two storey rear extension and roof light on…
6 Bankside Cottages, Milltown, Dublin 14
D18B/0472Dún Laoghaire–RathdownLodged 1 Feb 2019
- GrantedExtension
Permission for demolition of existing three-storey extension and construction of a new two-storey extension,…
2 Farleigh Place , Middle Glanmire Road , Cork
2241084Cork CityLodged 10 May 2022
- GrantedExtension
Permission for demolition of existing single storey rear extension and construction of new single storey rear…
83, Saint Magdalen Terrace, Dublin 4
5078/22Dublin CityLodged 20 Oct 2022
- GrantedExtension
Permission to demolish existing single storey rear extention and Permission to construct a new single storey…
No 2. Friary Lane, Rathmore, Kinsale, Co. Cork
164302corkLodged 12 Feb 2016
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.