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Sunday 30 August 2026

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SD20A/0283

Granted

Dublin - South Dublin County Council

Proposed Development

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.

View the full application file on the council's planning portal →

Application Timeline

  1. Further information requested

    5 Jan 2021

  2. Application received

    1 Feb 2021

  3. Further information received

    1 Feb 2021

  4. Decision due

    29 Mar 2021

  5. Decision: Grant Permission

    29 Mar 2021

  6. Grant issued

    10 May 2021

Application Details

Location
Grange Castle Business Park, Nangor Road, Clondalkin, Dublin 22
Applicant
N/A
Application Type
Permission
Planning Authority
South Dublin County Council
Site Area
162300 ha
Floor Area
59766 sq m

Timeline

Registration Date
1 February 2021
Status
Decision Following A.I.
Decision
Grant Permission
Decision Date
29 March 2021
Grant Date
10 May 2021

Location

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Planning Applications Nearby

What the council has granted and refused around this site is the best guide to how a similar application will fare.

0m
SD20A/0283/EPGrant Extension of Duration of Permission27 May 2026

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.

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

89m
SD16A/0088Granted18 Mar 2016

Site enabling works including demolition of existing vacant house and outbuildings (total floor area c.241sq.m), diversion of Baldonnel stream, provision of below ground attenuation. Development of 4 single storey data centres (DUB09, DUB10, DUB12, DUB13) located west of data centres DUB06 (existing), DUB07 & DUB08 (both granted under SD15A/0343), each data centre will contain the following: offices, computer and associated support areas, electrical component rooms, plant and associated equipment, plant at roof level and 5 flues each (each c.25m high) (gross floor area of each data centre c.17,598sq.m c.70,392sq.m in total). The height of each data centre will range between c.6.1m & c.13.3m high. Ancillary site works for connection to infrastructural services, as well as fencing, landscaping, perimeter service roads around the buildings. The provision for installation of heat dispersal infrastructure to facilitate the future potential recycling of waste heat energy by 3rd parties. 160 additional operational parking spaces (including universal accessible spaces). Provision of 20 bicycle parking spaces. Provision of 1 adiabatic water storage tank (c.273sq.m), 1 water treatment storage tank (416sq.m) and 2 pump houses (c.75sq.m each). Provision of 1,750 temporary construction worker parking spaces on adjoining Takeda and SDCC sites. All associated site development, service provision, landscaping ans associated works. This application includes modifications to permission ref. SD15A/0343 in relation to the lands west of permitted DUB07 & DUB08 now forming part of the current application. An Environmental Impact Statement (EIS) has been submitted with this application.

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

153m
SD25A/0071WGranted25 Mar 2025

PERMISSION for development at this site at Grange Castle Business Park. The site is located within the Microsoft Grange Castle Campus and adjoining the existing substation. The development will consist of revisions to parent permission SDCC Reg. Ref. SD24A/0188W to include the following: Removal of internal mezzanine floor level (175sqm). Removal of internal staircase. Introduction of external staircase to be located adjacent the south façade and enclosed in screening panels. All other developments as permitted under the SDCC Reg. Ref. SD24A/0188W: A permitted storage facility (approx. c.401sqm and c.14m in height) and set down area to house machinery for the ongoing maintenance of the existing Microsoft Grange Castle Campus. All associated landscaping, site development works, site lighting, boundary treatments and all other ancillary works.

Grange Castle Business Park, New Nangor Road (R134), Clondalkin, Dublin 22, D22F1W8

153m
SD24A/0188WGranted31 Jul 2024

Microsoft Ireland Operations Ltd. intend to apply for PERMISSION for development at this site at Grange Castle Business Park, New Nangor Road (R134), Clondalkin, Dublin 22. The site is located within the Microsoft Grange Castle Campus and adjoining the existing substation. The development will consist of a storage facility (approx. c.401sqm and c.14m in height) and set down area to house machinery for the ongoing maintenance of the existing Microsoft Grange Castle Campus. All associated landscaping, site development works, site lighting, boundary treatments and all other ancillary works.

Grange Castle Business Park, New Nangor Road (R134), Clondalkin, Dublin 22, D22F1W8

177m
SD23A/0039Granted28 Feb 2023

Provision of an establishment to which to European Communities (Major Accident Hazards involving Dangerous Substances) Regulations 2006 as amended by Chemicals Act (Control of Major Accident Hazards involving Dangerous Substances) Regulations 2015 apply, constituting a change of use; The new establishment will include all the existing and permitted buildings (SD13A/0143 as amended by SD13A/0265, SD14A/0194 as amended by SD15A/0343, SD16A/0088 as amended by AD17A/0318 & SD20A/0283, SD21A/0203 & SD21A/0288, all within an existing campus; The proposal relates to the total quantum of fuel oil to be stored within existing and permitted tanks across the existing and permitted buildings; For the avoidance of doubt no works or physical development is proposed and the application relates to an existing development which comprises or is for the purpose of an activity requiring an integrated pollution prevention and control (IE) licence.

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

177m
SD22A/0446Invalid Application28 Nov 2022

Provision of an establishment to which the European Communities (Major Accident Hazards involving Dangerous Substances) Regulations 2006 as amended by Chemicals Act (Control of Major Accident Hazards Involving Dangerous Substances) Regulations 2015 apply. The new establishment will include all the existing permitted buildings (SD13A/0143 as amended by SD13A/0265; SD14A/0194 as amended by SD15A/0343; SD16A/0088 as amended by SD17A/0318 and SD20A/0283; SD21A/0203; SD21A/0288), all within existing campus. The proposal relates to the total quantum of fuel oil to be stored within existing and permitted tanks across existing and permitted buildings. For the avoidance of doubt no works or physical development id proposed. The application relates to an existing development which comprises or is for the purposes of an activity requiring an integrated pollution prevention and control (IE) licence

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

199m
ED23/0037Declared Exempt14 Aug 2023

Use of an existing internal room as a shredding room for operational waste management. No works are required to facilitate the operation as the shredding equipment would be sited wholly within the permitted and completed structure.

DUB06, Data Centre Facility, Grange Castle Business Park, Nangor Road, Clondalkin, Dublin 22

225m
ED26/0001Declared Exempt13 Jan 2026

The proposed works consist of the erection of 6 No. platforms at the DUB07, DUB 09, DUB13, and DUB14 data centres at Grange Castle Business Park for the purpose of monitoring flue emissions.

DUB07 DUB09 DUB13 and DUB14, Data Centres, Grange Castle Business Park

235m
SD17A/0318Granted6 Sept 2017

The provision of a temporary (for 3 years) 18MW gas powered electricity generator compound to provide electricity to the DUB08 data centre located within the Microsoft Data Centre Campus, in advance of the upgrade of electricity infrastructure locally. The development will include 16 generators, gas skid compound and site compound (providing control cabinets, drying room, toilets and staff canteen – total floor area of buildings c.125sq.m). Temporary access arrangements via existing construction access from business park road. Provision of 10m high acoustic screen, palisade fencing and gates, staff parking, additional landscape screening. All associated site development, service provision, landscaping and other works. The temporary generator compound will be located within campus lands subject to an extant planning permission – Reg. Ref: SD16A/0088 (4 No. data centres; DUB09, DUB10, DUB12, DUB13) and the current application represents a modification to this permission. The compound will be located across part of the footprint of permitted data centre DUB12. It is intended that DUB12 and DUB13 will be constructed and permission Reg. Ref: SD16/0088 completed following decommissioning of the temporary generator compound. An Environmental Impact Assessment Report (EIAR) has been submitted with this application.

Grangecastle Business Park, Nangor Road, Clondalkin, Dublin 22

273m
SD24A/0019Granted29 Jan 2024

Amendments to a previously permitted development (Ref. SD21A/0203 which amended Ref. SD20A/0283); Amendments relate to the permitted Gas Skid Compound to provide layout details which will include the provision of a boiler house kiosk, Electrical & Instrumentation kiosk, regulators/meters kiosk, gas analyser kiosk and all associated infrastructure and site development works; The application relates to a development which comprises or is for the purpose of an activity requiring an Industrial Emissions Licence; The use of the site is an establishment to which the European Communities (Major Accident Hazards Involving Dangerous Substances) Regulations 2006 as amended by the Chemicals Act (Control of Major Accident Hazards Involving Dangerous Substances) Regulations 2015 apply.

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

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