Planning Register
South Dublin County Council · SD23B/0325 · Permission

6, Knocklyon Cottages, Knocklyon Road, Rathfarnham, Dublin 14

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

Council received 26 Jul 2023We first saw it 11 Sept 2026, 18:51 (1144 days after receipt — sources refresh weekly)
Applications only for this county. Appeals, zoning, RZLT and consultations: Dún Laoghaire-Rathdown and Fingal only for now.

SD23B/0325 is a planning application for permission at 6, Knocklyon Cottages, Knocklyon Road, Rathfarnham, Dublin 14, received by South Dublin County Council on 26 Jul 2023 and first seen by Planning Register on 11 Sept 2026. The application describes: Permission is sought for demolition existing rear and side single storey extension, new single storey side extension, new rear partially single storey, partially two storey extension, with rear ground floor dropped down by 850mm, some internal alterations, and associated site works. The council granted permission on 19 Sept 2023. The five-week observation window closed on 30 Aug 2023. A commencement notice (CN0113165SD) was lodged on 18 Apr 2024, so works have started on site. The site is zoned R2 — existing residential under the South Dublin County Council development plan. Within 500 m there are 82 other decided applications in the last five years and 5 appeals.

Appeal window closes 17 Oct 2023 closed 1061 days ago
4 weeks from the council's decision (19 Sept 2023) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer)
Council registerSite report

Proposal

Permission is sought for demolition existing rear and side single storey extension, new single storey side extension, new rear partially single storey, partially two storey extension, with rear ground floor dropped down by 850mm, some internal alterations, and associated site works.

Status
Final Grant
Decision
Grant permission on 19 Sept 2023
Final grant
31 Oct 2023
Floor area
98 m²
Site (from polygon)
852 m²
Location precision
site (coords_polygon)

Timeline

  • 26 Jul 2023
    New application
    Observation window closed 30 Aug 2023
  • 19 Sept 2023
    Decision
    Appeal window closed 17 Oct 2023

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Appeal

Not appealed.

Commencement

  • Opt out commencement notice CN0113165SD
    18 Apr 2024Knocklyon Road, Dublin, D16 K5C1matched by ref_exact

Zoning at the site

R2 — Existing residential

RES: To protect and/or improve residential amenity

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, 18:51 (store id 112360). 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/southdublin/application-details/64545.

Source: npad · fetched 11 Sept 2026, 18:51
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npadCC-BY-4.011 Sept 2026, 18:51open