Planning application · Dun Laoghaire Rathdown County Council

Conservation-based repair works, internal alterations and the construction of a new…

10, Longford Terrace, Monkstown, Dublin, A94XY98

D26A/0068/WEB · Dun Laoghaire RathdownGranted
Reference
D26A/0068/WEB
Planning authority
Dun Laoghaire Rathdown County Council
Received
6 Feb 2026
Decided
12 Aug 2026
Status
Granted
Application type
extension
Use
Residential
Site area
0.049 ha

Proposed development

The development will consist of conservation-based repair works, internal alterations and the construction of a new single storey extension at ground floor level to the rear of the existing house and side of existing return comprising of: 1) Repair and restoration of existing granite front steps; 2) Construction of a new storage area under front driveway accessed from front lower ground floor lightwell; 3) Installation of a new glazed entrance door into lower ground floor vestibule under front steps; 4) Internal alterations to lower ground floor layout including new opening in central spine wall between proposed cinema room and gym areas, lowering of floor level to proposed gym area, removal of non-original partitions and construction of new partition between proposed cinema room and proposed utility / boot room, removal of existing non-original partitions around existing stairwell and making good existing staircase; 5) Removal of existing non original door and window between proposed gym and rear lightwell and blocking up opening; 6) Construction of new single storey extensions at ground floor level extending over existing lightwell, terrace and plant room; 7) Alterations to existing non-original return including removal of existing first floor slab to create double height space, substantial removal of existing eastern elevation external wall and replacement and raising of roof to encompass the existing original arched window feature; 8) Construction of a covered terrace, privacy screening and external steps extending into rear garden; 9) Removal of existing sash window, granite sill, apron and base panels to create new access from existing kitchen into new extension with conservation and restoration of existing joinery; 10) Removal of existing partitions around stairwell and modifications to existing return to reinstate original openings between hall and proposed extension; 11) Reinstatement of existing opening (previously blocked) between existing kitchen and lounge including installation of sliding doors; 12) Opening up new doorway from first floor landing into master bedroom and blocking up existing arched opening; 13) Modification and repair of existing rooftop access hatch to create new rooflight and roof access above landing; 14) All associated site, ancillary, decoration and conservation works.

What happens next

Permission was granted on 12 Aug 2026. Third parties may appeal within four weeks; after that the permission is final and works can start once a commencement notice is lodged.

For the applicant

Is this your application?

Sign in to follow it through the Dun Laoghaire Rathdown planning process, get told when the decision lands, and see which builders and trades are working on similar projects near you. It is free and takes an email address.

Follow this applicationNo cold calls. Nothing is shared unless you choose to.

Nearby applications

Other applications on the Dun Laoghaire Rathdown register close to this address.

All Dun Laoghaire Rathdown planning applications

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 22 Aug 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. This is your right to object under GDPR Article 21.