Planning Register
South Dublin County Council · SD25B/0265W · Permission

23, Knockfield Manor, Knocklyon Road, Dublin 16, D16 A2K7

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

Council received 10 May 2025We first saw it 11 Sept 2026, 18:51 (490 days after receipt — sources refresh weekly)
Applications only for this county. Appeals, zoning, RZLT and consultations: Dún Laoghaire-Rathdown and Fingal only for now.

SD25B/0265W is a planning application for permission at 23, Knockfield Manor, Knocklyon Road, Dublin 16, D16 A2K7, received by South Dublin County Council on 10 May 2025 and first seen by Planning Register on 11 Sept 2026. The application describes: Single-storey rear and side extension to include kitchen, storage and utility rooms, 2 no. roof windows and alterations to existing elevations and associated works to take place. The council granted permission on 25 Jun 2025. The five-week observation window closed on 16 Jun 2025. The site is zoned R2 — existing residential under the South Dublin County Council development plan. Within 500 m there are 48 other decided applications in the last five years and 5 appeals.

Appeal window closes 23 Jul 2025 closed 416 days ago
4 weeks from the council's decision (25 Jun 2025) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer)
Council registerSite report

Proposal

Single-storey rear and side extension to include kitchen, storage and utility rooms, 2 no. roof windows and alterations to existing elevations and associated works to take place

Status
Final Grant
Decision
Grant permission on 25 Jun 2025
Final grant
5 Aug 2025
Permission expires
4 Aug 2030
Floor area
48 m²
Site (from polygon)
309 m²
Location precision
site (coords_polygon)

Timeline

  • 10 May 2025
    New application
    Observation window closed 16 Jun 2025
  • 25 Jun 2025
    Decision
    Appeal window closed 23 Jul 2025

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Appeal

Not appealed.

Commencement

No commencement notice matched to this reference.

    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.

    • NIAH-recorded building · 1
      Knocklyon House
    • Radon risk area · 2
      About 1 in 10 homes in this area is likely to have high radon levels; 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 101215). 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/68226.

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