Construction of a first-floor extension over the existing single-storey at 29, Avondale Lawn
29, Avondale Lawn, Blackrock, Dublin, A94X8Y8
up to 2 storeys · 0.03 ha · Granted · permission to Sept 2031 (estimate)
Planning application D26B/0438/WEB to Dun Laoghaire Rathdown County Council: Construction of a first-floor extension over the existing single-storey flat-roof side/front section, at 29, Avondale Lawn, Blackrock. Granted by the council on 23 September 2026. The permission normally runs to September 2031 (an estimate: the grant plus five years).
Timeline
- Application lodged
- Council granted
- Permission normally ends (estimate)
The end date is an estimate: the grant plus five years, the normal life of a permission. An extension or a commencement changes it.
Key facts
Proposed development
The construction of a first-floor extension over the existing single-storey flat-roof side/front section; alterations to the existing hipped roof to form a Dutch-hipped roof profile and a new projecting A-gable to the front elevation, incorporating burnt-larch cladding; conversion of the attic to ancillary domestic accommodation comprising a studio and office; construction of two dormer windows to the rear roof slope; installation of two rooflights to the front roof slope; alteration/reconstruction of the chimney stack; construction of a new internal staircase from first-floor level to the attic; internal alterations at first-floor level to accommodate the revised layout; associated new and altered window openings and external finishes; continued connection to the existing public foul and surface water drainage services; and all associated site and ancillary works, all to the existing two-storey semi-detached dwelling with existing single-storey flat-roof side/front section.
Planning status
Permission was granted on 23 Sept 2026. Third parties may appeal within four weeks; after that the permission is final and works can start once a commencement notice is lodged.
Is this your application?
Say it is yours and you will see which building firms and trades have asked to work on it, with the contact details they chose to leave. It is free and takes an email address. Nothing is shared with anyone unless you choose to contact them.
Nearby applications
Other applications on the Dun Laoghaire Rathdown register close to this address.
- REF6925No.29, Avondale Lawn, Carysfort, Blackrock, Dublin, A94X8Y8In Assessment
A single storey garden room in the rear garden of existing house
- D25A/0610/WEB43, Avondale Lawn, Blackrock, Dublin, A94D6D9On Site
Following: 1) Demolition of single storey bo
- D21A/0136/E1Rear Of 4 & 4a, Proby Square, Blackrock, Co. DublinGranted
Development. The proposed development will consist of:
- D24A/0652/WEBProby Square Lane, off Carysfort Avenue, Blackrock, Co DublinClosed
Retention of a pair of automatic entrance gates at t
- D25B/04612a, Proby Square, Carysfort Avenue, Blackrock, Dublin, A94NY19Granted
Single storey family flat extension comprising of hallway linked to the existing dining of the main house, living/dining/kitchen room…
- D26B/0113/WEB2a, Proby Square, Blackrock, Dublin, A94NY19Granted
2.02 m high, metal fence with posts (15.275 m) erected along the southern boundary.
Related
About this page: the facts above come from the statutory public planning register kept by Dun Laoghaire Rathdown County Council and are refreshed weekly (last updated 29 Sept 2026). Applicant names and contact details are not shown. Status labels are PlanningLeads' plain-language reading of the register status and the "Use" label is classified by AI from the public description (see how we use AI); neither is legal advice and the council's file is the record. How we handle this data: privacy notice.
Remove my application from this page
If this is your application and you would rather it did not appear here, tell us and we will take the page down. No account, no questions asked: we only email you a link to confirm it was you. This is your right to object under GDPR Article 21.