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New Application · decision due 12 Nov 2026Pre-decision · not yet granted

~1 dwelling, 26 Mather Road South, Mount Merrion, Blackrock, Co. Dublin, A94F7K2

Blackrock, Dublin · Dun Laoghaire Rathdown County Council · Plan D26A/0700/WEB · PB ref PB-2079473395

Planning Permission for extension and alterations to the existing dwelling to include; 1) At Ground floor - Relocation of staircase, open plan kitchen/dining/snug area, TV room, shower room, playroom and ensuite bedroom with extension to include enlarged study and utility room. 2) At First Floor - Extension and alterations to...

Indicative value Not listed PB indicative band
Units applied for 1 public application record
Floor area Not listed no reliable figure indexed
Decision due 12 Nov 2026 public planning date
Commenced None indexed public commencement index
Applied for, not granted

The record describes what is sought. Nothing is permitted until the authority decision.

Application scope

Package signals below are limited to wording in the public application record.

Not procurement evidence

No tender, award, contractor appointment, supplier appointment or procurement timetable is inferred.

Opportunity & supplier intelligence

What is known, and what may happen next

Source-linked

Timing is a planning-stage outlook, not a tender, award, contractor appointment, supplier appointment or guaranteed procurement date.

Likely procurement timing Decision-dependent

The application is pre-decision. The earliest credible supplier window is after the public decision milestone on 12 Nov 2026; no procurement timetable is published.

Decision due 12 Nov 2026 / Confidence: Medium
Decision deadline 12 Nov 2026

Public planning decision due date; the authority may update it.

Open evidence
Commencement activity No linked activity indexed

No commencement indexed / A scheme cannot commence under this application before permission.

Source limited
Drawings availability Drawing availability not indexed

No drawing entry is available in this lead's bounded document evidence.

Source limited

Confirmed application scope

Planning Permission for extension and alterations to the existing dwelling to include; 1) At Ground floor - Relocation of staircase, open plan kitchen/dining/snug area, TV room, shower room, playroom and ensuite bedroom with extension to include enlarged study and utility room. 2) At First Floor - Extension and alterations to the existing first-floor accommodation to provide a master ensuite bedroom with dressing area, Landing, Ensuite bedroom 4 with dressing area, Bedroom 3, shared en-suite accommodation, and...

Ref D26A/0700/WEB Source-linked Official application description for exact planning reference D26A/0700/WEB
Open scope evidence

Public source roles

No named firm role is published in this panel's source contract. PlanningBrief does not infer a contractor or supplier.

Explicit source signals only

2 packages
Site works

Roads and site-development scope

The public application description explicitly references roads and site-development scope.

D26A/0700/WEB Explicit description / Source-linked Source
Services

Services / drainage scope

The public application description explicitly references services / drainage scope.

D26A/0700/WEB Explicit description / Source-linked Source
Confidence & provenance 1 official source
Authority
Dun Laoghaire Rathdown County Council
Exact reference
D26A/0700/WEB
Evidence reviewed
28 Sep 2026
Confidence
Source-linked

Facts come from the indexed public planning record and any bounded structured document evidence. No request-time official fetch, tender, award or appointment inference is used.

Application-stage scope

What the public record evidences

3 source-supported signals
One-off house

One-off house - 1 dwellings

The public application record identifies 1 dwellings in the submitted planning scope.

D26A/0700/WEBExplicit application record
Site works

Roads and site-development scope

The public application description explicitly references roads and site-development scope.

D26A/0700/WEBExplicit description signal
Services

Services / drainage scope

The public application description explicitly references services / drainage scope.

D26A/0700/WEBExplicit description signal

Only source-supported scope signals are shown; generic trade padding is omitted.

Project facts

Named source parties

Promoter
Melissa McCahey & Kevin O'Reilly
Planning agent
Claire O'Neill
Official description

Application text

Planning Permission for extension and alterations to the existing dwelling to include; 1) At Ground floor - Relocation of staircase, open plan kitchen/dining/snug area, TV room, shower room, playroom and ensuite bedroom with extension to include enlarged study and utility room. 2) At First Floor - Extension and alterations to the existing first-floor accommodation to provide a master ensuite bedroom with dressing area, Landing, Ensuite bedroom 4 with dressing area, Bedroom 3, shared en-suite accommodation, and Bedroom 2/study. 3) Front Elevation – North-West - Removal of the existing brick finish. New timber finish to the front entrance porch. Alterations to existing window openings, including reduced widths and increased heights. Replacement of the existing pitched roof over the main entrance with a flat roof. Alterations and extensions to the existing roof profile, including: Two new dormer windows serving the master bedroom and Bedroom 2. A new triangular rooflight serving the landing. Removal of the existing chimney. 4) Right Elevation – South-West - Removal of the existing single-storey rectangular projection and existing en-suite window, with new sliding doors the proposed dining area. Construction of a new flat-roofed projecting bay window serving the snug. Replacement of an existing door with a window serving the en-suite for bedroom 5. Four new rooflights within the altered roof profile. 5) Rear Elevation – South-East - Construction of a new first-floor gable incorporating two window openings, serving an en-suite and a projecting oriel window serving Bedroom 4. Provision of a new dormer window serving the master bedroom en-suite. Replacement of the existing pitched roof over the breakfast area with a flat roof. Replacement of two existing ground-floor rear windows with a glazed single door serving the kitchen and a full-height picture window serving the dining area. 6) Left Elevation – North-East - Replacement of the existing flat roof over the kitchen/dining/living area with a new dormer pitched roof. Provision of five rooflights, including a triangular rooflight serving the landing. Realignment of the existing kitchen gable wall from a position parallel with the site boundary to a stepped arrangement to provide separation from the adjoining property site boundary masonry wall with site boundary wall to be reduced in height to approximately 1.83m. 7) Provision of a new high-level study window. 8) The works will also include the installation of external insulation to the existing dwelling with a smooth rendered finish in lieu of the existing roughcast/dashed finish. 9) Proposed widening of the existing site entrance from 2,850 mm to 4,037 mm, including the construction of a new masonry entrance pier, together with connection to existing services, landscaping and all associated site development works.

Source-aware chronology

Application to site progress

Empty lanes explain their state.
AppealsAn Coimisiún Pleanála
  1. Appeal No appeal possible yet The application has not been decided.
CommencementPublic commencement index
  1. Commenced No commencement indexed A scheme cannot start before it is permitted.
CompletionPublic completion projection
  1. Completed Completion not recorded No privacy-cleared exact completion certificate is linked to this permission. Absence is not evidence that the project is incomplete.
Evidence register

Source, scope and limits

Public planning record
Application description and scale D26A/0700/WEB

Planning Permission for extension and alterations to the existing dwelling to include; 1) At Ground floor - Relocation of staircase, open plan kitchen/dining/snug area, TV room, shower room, playroom and ensuite bedroom with extension to include enlarged study and utility room. 2) At First Floor - Extension and alterations to the existing first-floor accommodation to provide a master ensuite bedroom with dressing area, Landing, Ensuite bedroom 4 with dressing area, Bedroom 3, shared en-suite accommodation, and Bedroom 2/study. 3) Front Elevation – North-West - Removal of the existing brick finish. New timber finish to the front entrance porch. Alterations to existing window openings, including reduced widths and increased heights. Replacement of the existing pitched roof over the main entrance with a flat roof. Alterations and extensions to the existing roof profile, including: Two new dormer windows serving the master bedroom and Bedroom 2. A new triangular rooflight serving the landing. Removal of the existing chimney. 4) Right Elevation – South-West - Removal of the existing single-storey rectangular projection and existing en-suite window, with new sliding doors the proposed dining area. Construction of a new flat-roofed projecting bay window serving the snug. Replacement of an existing door with a window serving the en-suite for bedroom 5. Four new rooflights within the altered roof profile. 5) Rear Elevation – South-East - Construction of a new first-floor gable incorporating two window openings, serving an en-suite and a projecting oriel window serving Bedroom 4. Provision of a new dormer window serving the master bedroom en-suite. Replacement of the existing pitched roof over the breakfast area with a flat roof. Replacement of two existing ground-floor rear windows with a glazed single door serving the kitchen and a full-height picture window serving the dining area. 6) Left Elevation – North-East - Replacement of the existing flat roof over the kitchen/dining/living area with a new dormer pitched roof. Provision of five rooflights, including a triangular rooflight serving the landing. Realignment of the existing kitchen gable wall from a position parallel with the site boundary to a stepped arrangement to provide separation from the adjoining property site boundary masonry wall with site boundary wall to be reduced in height to approximately 1.83m. 7) Provision of a new high-level study window. 8) The works will also include the installation of external insulation to the existing dwelling with a smooth rendered finish in lieu of the existing roughcast/dashed finish. 9) Proposed widening of the existing site entrance from 2,850 mm to 4,037 mm, including the construction of a new masonry entrance pier, together with connection to existing services, landscaping and all associated site development works.

AuthorityDun Laoghaire Rathdown County Council
ReferenceD26A/0700/WEB
StatusChecked 28 Sep 2026
Open official record