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South Dublin County Council · SD25B/0433W

5a, Knocklyon Ave, Knocklyon, DUBLIN 16

  1. 7 Jul 2025Received
  2. 1 Sept 2025Grant permission
  3. 14 Oct 2025Final grant
  4. 27 Mar 2026Commenced
  5. 13 Oct 2030Permission expires
Applications only for this county. Appeals, zoning, RZLT and consultations: Dún Laoghaire-Rathdown and Fingal only for now.
Status
Commenced
Decision
Grant permission · 1 Sept 2025
Council
South Dublin County Council
Type
Permission
Site
224 m²

What’s proposed

alterations to previously approved planning application Reg Ref No. SD24A/0034. The proposed alterations affect House B (5A Knocklyon Ave) of the previous application to include a 1st floor extension to the side (circa 6 Sq/M) & a single storey extension to the rear (circa 3 Sq/M) & all associated works

SD25B/0433W is a planning application to South Dublin County Council for alterations to previously approved planning application Reg Ref No. SD24A/0034. The, received on 7 Jul 2025; permission was granted on 1 Sept 2025.

Planning details

Reference
SD25B/0433W
Local authority
South Dublin County Council
Status
Commenced · register status “Final Grant
Received
7 Jul 2025
Observations close
11 Aug 2025 (closed 399 days ago)
Decision due
1 Sept 2025 · decided 1 Sept 2025
Decision
Grant permission on 1 Sept 2025
Proposed development
alterations to previously approved planning application Reg Ref No. SD24A/0034. The proposed alterations affect House B (5A Knocklyon Ave) of the previous application to include a 1st floor extension to the side (circa 6 Sq/M) & a single storey extension to the rear (circa 3 Sq/M) & all associated works
As published by the register.
Site area
224 m² from the mapped boundary, not the council's figure
Applicant
Not published — the national feed carries no applicant name council register

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Full planning report for 53.28656, -6.32270

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Appeal

Not appealed.

Commencement

  • Short commencement notice CN0140085SD
    27 Mar 20265A Knocklyon Avenue, Knocklyon, South Dublin, D16 WV38matched 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 94487). 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/68554.

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