PlanningRegister.ie
South Dublin County Council · SD20A/0283

Grange Castle Business Park, Nangor Road, Clondalkin, Dublin 22

Approved in May 2021. Built and signed off.

  1. 2 Nov 2020Received
  2. 29 Mar 2021Approved
  3. 10 May 2021Final approval
  4. 30 Jul 2021Building started
  5. 17 May 2023Signed off
Status
Building started
Decision
Approved · 29 Mar 2021
Council
South Dublin County Council
Type
Permission
Site
16.08 ha

Live near Grange Castle Business Park?

Everything else planned on your street, in one report.

Check my street
Council register ↗

What’s proposed

In plain English

New administration building and two data centres at Grange Castle

The applicant wants to demolish an existing house and build a new administration building and two data centres. This includes new parking, a gas generator compound, and a new site access road.

  • Demolition of an existing vacant house, garage and outhouse
  • Includes 21 diesel generators and 20 gas generators
  • New access road includes a bridge over the Griffeen River
  • Includes a temporary construction car park with 802 spaces
Written by AI from the council’s description

An AI model rewrote the council’s description below in everyday words on 9 Oct 2026. It was told to use only that text, and every number it wrote was checked against it. It says nothing about whether the application will be approved. The council’s wording and planning file are the record.

The council’s description

Demolition of existing single storey vacant house, garage and outhouse (total gross floor area (GFA) c.291.2sq.m) and removal of existing temporary construction car park; Construction of a single 1-4 storey Central Administration Building and 2 2-storey (with mezzanine) data centres (DUB14 & DUB15) all to be located west of data centres DUB9, DUB10, DUB12 & DUB13 within the MS campus; The Central Administration Building (c.6.03m to c.19.85m high) will comprise central office administration, with staff cafeteria, staff gym and reception (GFA c.3,520sq.m), with provision of PV panels on the roof; each data centre (c.15.6m high to parapet height and c.18.65m to top of roof plant) will include data halls, admin blocks (comprising offices, canteen, loading dock, storage and ancillary areas) and a variety of mechanical and electrical plant areas/structures including Modular Electrical Rooms (MERs), battery rooms and transformer areas. GFA of DUB14 is c.28,072sq.m and GFA of DUB15 is c.28,173sq.m (c.56,246sq.m in total); DUB14 will also include 21 diesel generators and associated sub-stations (E-houses) and 11 mechanical flues (each c.30.75m high); Provision of a gas generator compound (to serve DUB15) containing 20 generators, 5 E-houses and 5 flues (c.25m max height); Provision of a Gas Networks Ireland gas skid including 3 kiosk buildings; Expansion of existing electrical sub-station compound (originally granted under SD07A/0632) to provide 3 additional transformer bays. 3 E-houses and 1 control room, 2 auxiliary transformers; 2 sprinkler tank and pump house areas, 1 additional rainwater harvesting plant; Provision of 168 permanent car parking spaces and 40 cycle parking spaces; Provision of additional western access to the MS campus (to serves the Central Administration Building) from the Business Park estate road (including bridge over the Griffeen River) with existing temporary access to be extinguished; Physical integration with the remainder of the existing MS campus (including internal access roads and landscaping) with associated modifications to the western boundary of the DUB09/DUB10/DUB12/DUB13 data centre development as permitted under SD16A/0088; Provision of a new temporary construction car park (with 802 car spaces, shuttle bus stop and shelter) on site north of the main entrance to the business park; Total gross floor area of the development will be c.59,766sq.m; All associated site development works, drainage and services provision, landscaping, boundary treatments (including security fencing) and associated works; An Environmental Impact Assessment Report (EIAR) has been submitted with this application; The application relates to a development which comprises an activity requiring an integrated pollution prevention and control (IE) licence

Planning details

Reference
SD20A/0283
Local authority
South Dublin County Council
Status
Commenced · register status “Decision Following A.I.”
Received
2 Nov 2020
Observations close
8 Mar 2021 (closed 2048 days ago)
Decision due
29 Mar 2021 · decided 29 Mar 2021
Decision
Grant permission on 29 Mar 2021
Site area
16.08 ha from the mapped boundary, not the council's figure
Applicant
Microsoft Operations Ireland Ltd. council register

Nearby 17 · 500 m · 5 years

Show all 17

Explore this area on the map →

Homes nearby

Development land nearby

From Buildable, our sister site for development land in Dublin.

See all development land near here →

Building started

  • 28 Jan 2022 · Builder told the council work was starting (seven-day notice) SN0006860SD
  • 28 Jan 2022 · Builder told the council work was starting (seven-day notice) SN0006861SD
  • 28 Jan 2022 · Builder told the council work was starting (seven-day notice) SN0006862SD
  • 28 Jan 2022 · Builder told the council work was starting (seven-day notice) SN0006859SD
  • 26 Oct 2021 · Builder told the council work was starting CN0082685SD
  • 30 Jul 2021 · Builder told the council work was starting CN0079435SD

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 · 8
    Pfizer Ireland Pharmaceuticals; P0693
  • Natural Heritage Area (incl. proposed) · 1
    Grand Canal
  • Recorded monument · 2
    Concentric enclosure; R183273

Where this comes from

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

Source: National Planning Application Database · fetched 14 Oct 2026, 01:45
SourceLicenceFetchedLink
National Planning Application DatabaseCC BY 4.014 Oct 2026, 01:45open
Summary

SD20A/0283 is a planning application to South Dublin County Council for demolition of existing single storey vacant house, garage and outhouse (total gross, received on 2 Nov 2020; permission was granted on 29 Mar 2021.