Planning Register
South Dublin County Council · SD25B/0122W

16, Castlefield Green, Knocklyon, Dublin 16, D16C9N1

  1. 10 Mar 2025Received
  2. 29 Apr 2025Grant permission
  3. 10 Jun 2025Final grant
  4. 5 Sept 2025Commenced
  5. 9 Jun 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 · 29 Apr 2025
Council
South Dublin County Council
Type
Permission
Site
300 m²

What’s proposed

For the construction of double storey side extension to existing semi-detached house, extension of existing single storey rear extension, conversion of existing attic to 2 No. Bedrooms with individual dormer windows and all associated works. Works on ground floor of double storey side extension consist of new utility area, and roller shutter door to house a vehicle securely in ground floor space and first floor consists of 2 new bedrooms with landing area. Demolition works include existing front side boundary wall and existing rear extension wall

SD25B/0122W is a planning application to South Dublin County Council for for the construction of double storey side extension to existing semi-detached house, received on 10 Mar 2025; permission was granted on 29 Apr 2025.

Planning details

Reference
SD25B/0122W
Local authority
South Dublin County Council
Status
Commenced · register status “Final Grant
Received
10 Mar 2025
Observations close
14 Apr 2025 (closed 518 days ago)
Decision due
5 May 2025 · decided 29 Apr 2025
Decision
Grant permission on 29 Apr 2025
Proposed development
For the construction of double storey side extension to existing semi-detached house, extension of existing single storey rear extension, conversion of existing attic to 2 No. Bedrooms with individual dormer windows and all associated works. Works on ground floor of double storey side extension consist of new utility area, and roller shutter door to house a vehicle securely in ground floor space and first floor consists of 2 new bedrooms with landing area. Demolition works include existing front side boundary wall and existing rear extension wall
As published by the register.
Site area
300 m² from the mapped boundary, not the council's figure
Applicant
Not published — the national feed carries no applicant name council register

Around this site this application first, then everything within 500 m

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Zoning, appeals, sold prices, flood and heritage constraints — everything for this area in one PDF.

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Appeal

Not appealed.

Commencement

  • Opt out commencement notice CN0132908SD
    5 Sept 202516 Castlefield Green, Knocklyon, South Dublin, D16 C9N1matched by ref_exact

Zoning at the site

G1 — Open space with recreation

OS: To preserve and provide for open space and recreational amenities

Open space with active recreational amenities — pitches, courts, play areas.

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
  • Recorded monument · 4
    Ringfort - unclassified; Fulacht fia; R149387

Provenance

Register row from the national planning applications feed (NPAD), fetched 11 Sept 2026, 18:51 (store id 106477). 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/67852.

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