The Register of Planning Applications · Éire

Sunday 30 August 2026

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24306

REFUSED

Wicklow - Wicklow County Council

Proposed Development

Section 42(1) on PRR 10/2123 (access road from the south western roundabout of the Ballyronan interchange to the site entrance. The road continues northward for an additional c 0.3km terminating in a cul de sac formed by bollards at its junction with the laneway located at the northern site boundaries (total road length c 1.1km). The proposed road will include a two way cycle track and a footpath and will involve restoration / modification of the existing Demesne wall; closure of the existing left in / left out access to Mountkennedy House (protected structure) off the N.11. Access will be provided to the existing laneway directly from the proposed access road, 10 no identical two storey Data Centre units each measuring c 10,915 sqm gross. The ground floor of each unit comprises plant areas, storage, workshops, reception / lobby, office space, inspection area, breakroom, internal loading areas and circulation space. The first floor of each unit comprises a net technical area, offices, ancillary plant, storage and circulation space. Each Data Centre unit will also have an ancillary service yard that will incorporate a sprinkler tank, a pump house, an MV switchroom, ESB switch rooms, electrical transformers enclosed within a post and wire mesh fence and a fuel storage tank, an auxillary cooling compound located to thee rear of each building and adjacent to the service yard, an enclosed electrical compound located centrally along the southern site boundary providing for a future step down transformer from the existing 220/110kv overhead power line, a primary dry cooling compound in area housing dry cooling units located to the west of the site; 3 no heat exchanger buildings located on site at the south west corner, north west corner and to the south of the site entrance at the eastern boundary, 250 car parking spaces including 40 electric car parking spaces and 20 disabled car parking spaces; a temporary waste water treatment plant and percolation area located centrally within the site; 1 main security hut located at the site entrance and 10 individual security huts located at the entrance to each individual Data Centre unit; landscape berming and additional planting at the site boundaries; all ancillary site developments works. The proposed development comprises or is for the purposes of an activity that may require an Integrated Pollution Prevention Control Licence and has a total gross floor area of 111,228 sqm)

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

Application Timeline

  1. Application received

    8 Jul 2024

  2. Decision: REFUSED

    30 Jul 2024

  3. Decision due

    1 Sept 2024

Application Details

Location
Mountkennedy Demesne & Tinnapark Demesne , Co. Wicklow
Applicant
N/A
Application Type
EXTENSION OF DURATION
Planning Authority
Wicklow County Council
Site Area
32.84 ha

Timeline

Registration Date
8 July 2024
Status
APPLICATION FINALISED
Decision
REFUSED
Decision Date
30 July 2024

Location

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2560508REFUSED7 Jul 2025

demolition of the existing derelict dwelling (64.7 sq m) and outbuildings (145.8 sq m); and the construction of a residential scheme comprised of 10 No. 4-bed houses. The proposed houses are 2-storey plus dormer attic in height and total 1,630 sq m gross floor area. The development also includes: 22 No. car parking spaces; cycle parking; hard and soft landscaping, including public open space and private gardens; public lighting; boundary treatments; internal roads; reconfiguration of existing entrances at L5046 to provide a single multi-modal entrance; and all associated works above and below ground

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