PlanningRegister.ie
South Dublin County Council · SD20A/0295/EP

Townlands within Grange Castle South Business Park, Baldonnel, Dublin 22

Approved in May 2026.

  1. 1 Apr 2026Received
  2. 26 May 2026Approved
Status
Approved
Decision
Approved extension of duration of permission · 26 May 2026
Council
South Dublin County Council
Type
Extension Of Duration Of Permission
Site
9.73 ha

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What’s proposed

Amendments and modifications to the permitted data centre development granted under Reg. Ref. SD18A/0134 - ABP Ref. ABP-302813-18 and the temporary substation permission granted under SD19A/0300 to include: Demolition of the two storey dwelling of Weston House; single storey dwelling and outbuildings/ stables of Weston Lodge; and the single storey dwelling and converted garage of Kent Cottage. Retention of sprinkler tank and pump house to the south-west of Building A Data Centre to replace 4 sprinkler tanks; Retention of 40kW(p) PV panels on the roof of Building A Data Centre; Retention of revised size of northern attenuation pond and loss of permitted landscaping to its south; Retention of ramped access to rear of temporary substation permitted under SD19A/0300; Retention of revised flue arrangement for Building A Data Centre from 2 associated flues per generator to 1 associated flue per generator (16 in total) and grouped into 8 towers of two flues each (each 20m high); Retention of revised position of security fence to north, west and south of Building A Data Centre; and retention and modifications of landscape berm along Baldonnel Road and to east of Weston House. Development will consist of new works to include: Modifications of permitted vehicular entrance to the data centre to include a new single storey guard house (37sq.m) and two internal entrance gates; Modification to car parking so that the permitted entrance to the parking area from the east is closed off; Modifications of flue arrangement for Building B Data Centre from 2 associated flues per generator to 1 associated flue per generator (16 in total) and grouped into 8 towers of two flues each (each 20m high); Modifications to permitted landscape scheme to north and south of Building A Data Centre; Removal of roadside entrance to Erganagh House (demolished), Kent Cottage, and the former scaffolding yard; and removal of roadside entrance to Weston House and its replacement with a new agricultural gate and fence to be erected to facilitate access for maintenance and security purposes only all on a site of 9.7Ha located within lands in the Grange Castle South Business Park and the residential properties of Weston House, Kent Cottage and Weston Lodge as well as the former scaffolding yard on land within the townlands of Aungierstown and Ballybane; Ballybane; and Milltown and bounding Baldonnel Road to the west and south and Grange Castle South access road to the north, Baldonnel, Dublin 22

Planning details

Reference
SD20A/0295/EP
Local authority
South Dublin County Council
Status
Granted · register status “Decision”
Received
1 Apr 2026
Observations close
7 May 2026 (closed 160 days ago)
Decision due
26 May 2026 · decided 26 May 2026
Decision
Grant extension of duration of permission on 26 May 2026
Site area
9.73 ha from the mapped boundary, not the council's figure
Applicant
CyrusOne Irish Datacentres Holdings Ltd. council register

Nearby 16 · 500 m · 5 years

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Homes nearby

Development land nearby

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Zoning

C2.1 — Economic development and employment

Zoned for employment uses. Housing is not the intended use here.

Protections nearby 250 m

Flood area nearby (OPW maps). floodinfo.ie ↗

  • EPA-licensed facility · 3
    Amazon Data Services Ireland Limited; P1184
  • Recorded monument · 4
    Concentric enclosure; Enclosure

Where this comes from

National planning feed (NPAD), fetched 14 Oct 2026, 01:45.

Source: npad · fetched 14 Oct 2026, 01:45
SourceLicenceFetchedLink
npadCC-BY-4.014 Oct 2026, 01:45open
Summary

SD20A/0295/EP is a planning application to South Dublin County Council for amendments and modifications to the permitted data centre development granted under Reg., received on 1 Apr 2026; permission was granted on 26 May 2026.