Planning Register
South Dublin County Council · SD26B/0156W · Permission

9, Knocklyon Close, Knocklyon, Dublin, D16 TP94

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

Council received 3 Apr 2026We first saw it 11 Sept 2026, 18:51 (162 days after receipt — sources refresh weekly)
Applications only for this county. Appeals, zoning, RZLT and consultations: Dún Laoghaire-Rathdown and Fingal only for now.

SD26B/0156W is a planning application for permission at 9, Knocklyon Close, Knocklyon, Dublin, D16 TP94, received by South Dublin County Council on 3 Apr 2026 and first seen by Planning Register on 11 Sept 2026. The application describes: Amendmetns to the first floor extension previously granted planning permission Reg Ref: SD21B/0021. The council granted permission on 28 May 2026. The five-week observation window closed on 8 May 2026. The site is zoned R2 — existing residential under the South Dublin County Council development plan. Within 500 m there are 70 other decided applications in the last five years and 4 appeals.

Appeal window closes 25 Jun 2026 closed 79 days ago
4 weeks from the council's decision (28 May 2026) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer)
Council registerSite report

Proposal

Amendmetns to the first floor extension previously granted planning permission Reg Ref: SD21B/0021

Status
Final Grant
Decision
Grant permission on 28 May 2026
Final grant
8 Jul 2026
Permission expires
7 Jul 2031
Floor area
4 m²
Site (from polygon)
264 m²
Location precision
site (coords_polygon)

Timeline

  • 3 Apr 2026
    New application
    Observation window closed 8 May 2026
  • 28 May 2026
    Decision
    Appeal window closed 25 Jun 2026

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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.

    • 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 98680). 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/70102.

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