Planning Register
South Dublin County Council · SD25B/0504W · Permission

44, Knockcullen Lawn, Knocklyon, Dublin 16, D16 ND86

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

Council received 21 Aug 2025We first saw it 11 Sept 2026, 18:51 (387 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/0504W is a planning application for permission at 44, Knockcullen Lawn, Knocklyon, Dublin 16, D16 ND86, received by South Dublin County Council on 21 Aug 2025 and first seen by Planning Register on 11 Sept 2026. The application describes: (i) demolition of existing rear extension and shed; (ii) construction of single storey flat roof extension to the rear of existing two storey dwelling with covered patio and flat roof rooflights; (iii) construction of new bay window at first floor level over new extension to the rear of existing dwelling; (iv) new windows; landscaping, SUDS drainage and all associated works necessary to facilitate the development. The council granted permission on 15 Oct 2025. The five-week observation window closed on 25 Sept 2025. The site is zoned R2 — existing residential under the South Dublin County Council development plan. Within 500 m there are 86 other decided applications in the last five years and 4 appeals.

Appeal window closes 12 Nov 2025 closed 304 days ago
4 weeks from the council's decision (15 Oct 2025) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer)
Council registerSite report

Proposal

(i) demolition of existing rear extension and shed; (ii) construction of single storey flat roof extension to the rear of existing two storey dwelling with covered patio and flat roof rooflights; (iii) construction of new bay window at first floor level over new extension to the rear of existing dwelling; (iv) new windows; landscaping, SUDS drainage and all associated works necessary to facilitate the development.

Status
Final Grant
Decision
Grant permission on 15 Oct 2025
Final grant
25 Nov 2025
Permission expires
24 Nov 2030
Floor area
21 m²
Site (from polygon)
360 m²
Location precision
site (coords_polygon)

Timeline

  • 21 Aug 2025
    New application
    Observation window closed 25 Sept 2025
  • 15 Oct 2025
    Decision
    Appeal window closed 12 Nov 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.

    • 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 99089). 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/68792.

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