Planning Register
Dún Laoghaire-Rathdown County Council · D21A/0673 · Permission

7, Mather Road North, Mount Merrion, Blackrock, Co. Dublin, A94T9H6

Data updated 12 Sept 2026 · register lag up to 7 days · sources & freshness

Council received 22 Jul 2021We first saw it 11 Sept 2026, 15:18 (1878 days after receipt — sources refresh weekly)

D21A/0673 is a planning application for permission at 7, Mather Road North, Mount Merrion, Blackrock, Co. Dublin, A94T9H6, received by Dún Laoghaire-Rathdown County Council on 22 Jul 2021 and first seen by Planning Register on 11 Sept 2026. The application describes: Permission is sought for alteration/extension of an existing two storey. The council granted permission on 8 Sept 2021. The five-week observation window closed on 26 Aug 2021. A commencement notice (CN0133593DR) was lodged on 24 Sept 2025, so works have started on site. The site is zoned R2 — existing residential under the Dún Laoghaire-Rathdown County Council development plan. Within 500 m there are 148 other decided applications in the last five years and 21 appeals.

Appeal window closes 6 Oct 2021 closed 1803 days ago
4 weeks from the council's decision (8 Sept 2021) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer)
Council registerSite report

Proposal

Permission is sought for alteration/extension of an existing two storey

The description is truncated at source (80 characters in the national feed). The full text is on the council register.

Status
Decision made
Decision
Grant permission on 8 Sept 2021
Final grant
14 Oct 2021
Site (from polygon)
795 m²
Location precision
site (coords_polygon)

Timeline

  • 22 Jul 2021
    New application
    Observation window closed 26 Aug 2021
  • 8 Sept 2021
    Decision
    Appeal window closed 6 Oct 2021

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Appeal

Not appealed.

Commencement

  • Commencement notice CN0133593DR
    24 Sept 2025Mather Rd. N, Blackrock, Dún Laoghaire-Rathdown, A94 T9H6matched by ref_exact

Zoning at the site

R2 — Existing residential

Objective A: A To provide residential development and improve residential amenity while protecting the existing residential amenities

An established residential area. The objective is to protect existing residential amenity as well as to provide housing — which is the objective a neighbour's objection to an overbearing extension is usually argued under.

R2.6 — Existing residential

Objective A: A To provide residential development and improve residential amenity while protecting the existing residential amenities

An established residential area. The objective is to protect existing residential amenity as well as to provide housing — which is the objective a neighbour's objection to an overbearing extension is usually argued under.

Designations within 250 m

No OPW flood extent nearby.

  • Radon risk area · 1
    About 1 in 20 homes in this area is likely to have high radon levels

Provenance

Register row from the national planning applications feed (NPAD), fetched 11 Sept 2026, 15:18 (store id 26834). Deadlines were computed by the store from the received / decided dates under the Planning and Development Act 2000 and are recorded as events, not recomputed here. Council register: https://planning.agileapplications.ie/dunlaoghaire/application-details/?ref=D21A/0673.

Source: npad · fetched 11 Sept 2026, 15:18
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npadCC-BY-4.011 Sept 2026, 15:18open