34, Northumberland Ave, Dun Laoghaire, A96Y7H1
Alterations to a previously approved extension at 34 Northumberland Avenue, Dun Laoghaire.
D26B/0256/WEB · Dun Laoghaire Rathdown County Council · Lodged 27 April 2026
- Reference
- D26B/0256/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 27 April 2026
Summary
AI-generatedThe development consists of changes to a previously granted permission (D23B/0521). It includes a reduced footprint for the two-storey rear extension, revised elevations, a new lean-to roof over the side passage, and a new pedestrian gate.
- 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
The development will consist of alterations to the previously granted permission d23b/0521 with a reduced footprint to the two storey extension to rear and revised elevational treatments, construction of a lean to roof to side passage and addition of a new pedestrian gate accessed from northumberland close to the side / 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 |
|---|---|---|---|
| 34 Northumberland Avenue, Dunlaoughaira, Co Dublin | Dec 2025 | €1,900,000 | 0 m |
| 15 Northumberland Ave, Dun Laoghaire, Dublin | May 2025 | €1,250,000 | 46 m |
| The Coach House, Sydenham Mews, Corrig Avenue | Jan 2026 | €750,000 | 90 m |
| 10 Corrig Ave, Dun Laoghaire, Dublin | Nov 2025 | €1,286,250 | 98 m |
| 32 Mulgrave St, Dun Laoghaire, Dublin | Jul 2025 | €880,000 | 115 m |
| 30 Mulgrave St, Dun Laoghaire, Dublin | Nov 2025 | €1,800,000 | 119 m |
| 8 Northumberland Ave, Dun Laoghaire, Dublin | Feb 2025 | €1,100,000 | 128 m |
| 2 Patrick Court, Patrick St, Dun Laoghaire | Apr 2026 | €572,000 | 147 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 received27 April 2026
- Decision due22 June 2026
- Decision issued17 June 2026
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
(1) Removal of part of existing railings to Northumberland Avenue to provide vehicular access. (2) Provision…
34, Northumberland Avenue, Dun Laoghaire, Co. Dublin.
D04A/0641Dún Laoghaire–RathdownLodged 10 Jun 2004Alterations
- GrantedAt this site
Demolition of existing two-storey extension to the rear (east) and one storey boiler room to the side…
34, Northumberland Avenue, Dun Laoghaire, Dublin, A96Y7H1
D23B/0521Dún Laoghaire–RathdownLodged 14 Nov 2023Extension
- GrantedAt this site
Redevelopment from existing seven residential units to five apartments with associated car parking to front…
33 Northumberland Avenue, Dun Laoghaire, Co. Dublin.
D02A/0146Dún Laoghaire–RathdownLodged 17 May 2002Apartments
- Granted30 m away
Demolition of existing 2 storey over basement non-original return to the rear and re-construction of a new 2…
37, Northumberland Avenue, Dun Laoghaire, Co. Dublin
D05B/0946Dún Laoghaire–RathdownLodged 22 Dec 2005Demolition
- Granted40 m away
The development will consist of: Alterations to the proposed development permitted under Register Reference…
18, Northumberland Avenue, Dun Laoghaire, Dublin, A96K793
D26A/0155/WEBDún Laoghaire–RathdownLodged 1 Mar 2026Extension
- Granted40 m away
Permission to increase the height of the front boundary wall separating the gardens of no 38 and no 39…
38, Northumberland Avenue, Dun Laoghaire, Dublin, A96TY20
D24B/0258Dún Laoghaire–RathdownLodged 31 May 2024Alterations
- Granted40 m away
Planning permission for the change of use from commercial office to single family house and associated works…
38, Northumberland Avenue, Dun Laoghaire, Co. Dublin
D11A/0231Dún Laoghaire–RathdownLodged 18 May 2011Change of use
- Granted40 m away
The development will consist of the moving and widening of the existing vehicular entrance. This will include…
31, Northumberland Avenue, Dun Laoghaire, Co. Dublin, A96EY19
D25A/0110/WEBDún Laoghaire–RathdownLodged 14 Feb 2025Infrastructure
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