77 South Avenue, Mount Merrion, Blackrock, County Dublin
Partial demolition of an outhouse and construction of a ground floor extension.
D20A/0812 · Dun Laoghaire Rathdown County Council · Lodged 5 November 2020
- Reference
- D20A/0812
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 5 November 2020
Summary
AI-generatedThe project involves the partial demolition of a single-storey external outhouse to the rear. It also includes a 9 sqm ground floor extension to expand the kitchen, dining, and living area, alongside internal alterations.
- Storey
- 1
- Floor area
- 9 m²
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 is sought for development consisting of partial demolition of rear single storey external outhouse, ground floor extension of 9m2 comprising extension of kitchen, dining, living area. Relocation of ground floor gable windows (north elevation) under separate planning permission registered reference d20a/0453. Including associated internal alterations and 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.
Built — construction complete
A commencement notice records works starting on 30 July 2021.
Notified floor area: 53 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 66 South Ave, Mount Merrion, Dublin | Feb 2025 | €1,255,000 | 55 m |
| 64 South Ave, Mount Merrion, Dublin | Mar 2026 | €1,390,000 | 56 m |
| 43 Trees Road, Mount Merrion, Co Dublin | Nov 2025 | €1,300,000 | 84 m |
| 49 Cedarmount Rd, Mount Merrion, Blackrock | Aug 2025 | €830,000 | 133 m |
| 31 Trees Rd, Mount Merrion, Blackrock | Nov 2025 | €1,740,000 | 144 m |
| 56 Glenabbey Rd, Mount Merrion, Dublin | Jan 2025 | €1,315,000 | 149 m |
| 35 Cedarmount Rd, Mount Merrion, Blackrock | Mar 2026 | €880,000 | 170 m |
| 62 Thornhill Oaks, Blackrock, Co. Dublinprice excludes VAT | Mar 2026 | €859,031 | 180 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 received5 November 2020
- Decision issued7 January 2021
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
Retention permission is sought for development consisting of the demolition of existing entrance canopy and…
77 South Avenue, Mount Merrion, Blackrock, County Dublin
D22B/0156Dún Laoghaire–RathdownLodged 28 Mar 2022Retention
- GrantedAt this site
Permission sought for replacement of existing front door entrance portico with a tiled pitched roof canopy…
77, South Avenue, Mount Merrion, Co Dublin
D07B/0166Dún Laoghaire–RathdownLodged 27 Feb 2007Alterations
- GrantedAt this site
Permission is sought for development consisting of first floor extension and associated alterations to…
77 South Avenue, Mount Merrion, Blackrock, County Dublin
D20A/0453Dún Laoghaire–RathdownLodged 4 Sept 2020Extension
- GrantedAt this site
The development will consist of (a) first floor side extension over existing ground floor playroom/utility,…
81, South Avenue, Mount Merrion, Blackrock, Co. Dublin, A94H1K0
D26B/0242/WEBDún Laoghaire–RathdownLodged 16 Mar 2026Extension
- Granted30 m away
Permission is sought for the conversion of the existing side garage to habitable use with the addition of a…
81, South Avenue, Mount Merrion, Blackrock, Co Dublin
D21A/0541Dún Laoghaire–RathdownLodged 11 Jun 2021Extension
- Granted30 m away
Permission for development. Development will consist of the construction of a new dormer window to the rear…
83, South Avenue, Mount Merrion, Co. Dublin
D18B/0206Dún Laoghaire–RathdownLodged 4 May 2018Extension
- Granted40 m away
For proposed demolition of existing garage and construction of two storey extension to side single storey at…
83, South Avenue, Mount Merrion, Co. Dublin
D05B/0076Dún Laoghaire–RathdownLodged 10 Feb 2005Extension
- Granted40 m away
Permission is sought for partially 2 storey, partially single storey side extension within existing garage to…
Goretti, 8, Trees Avenue, Stillorgan, Co Dublin
D21B/0017Dún Laoghaire–RathdownLodged 26 Jan 2021Extension
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