Planning precedent report

The development will consist of a single storey self-contained family flat side extension and all associated site works

Development of the site for purpose of operational vehicle storage, including surfacing and ancillary infrastructure.

The development of a Regional Network Gateway (RNG) facility (supporting infrastructure for the MS data centres) comprising the following: • Construction of a single storey main building (RNG Building - c.1,124.3 sq.m) with air handling units (AHUs). • External plant/equipment yards including 3 no. diesel generators; sprinkler tank and pump house; electrical plant rooms, PV panels. • MV substation & Stormwater attenuation pond. • 12 no. car parking spaces (2 of which are EV parking spaces and with 1 accessible parking space). Bike parking shelter and bin store. • New road access provided from adjoining permitted estate road (granted under SDCC Ref. SD24A/0107W) and including bridge over existing watercourse. • Internal road and footpath layout, perimeter fencing, security gates and retaining wall. • Landscaped and planted areas including riparian corridor and swale. • Temporary Construction compound and parking area (including temporary bridging of existing watercourse/field drain). • All associated site development works, site lighting, boundary treatments, services/utilities provision (including underground works), and all other ancillary works. Total gross floor area of the development c.1,384.2 sq.m

The proposed development seeks to provide a temporary construction access road including entrance from Baldonnel Road to provide for the construction of a Regional Network Gateway (RNG) facility permitted under South Dublin County Council Reg. Ref. SD25A/0035W. The works will also involve the temporary provision of a security hut, security gate, vehicle set down area, associated fencing, lighting, civils, drainage, and landscaping works. The temporary works will be removed and lands reinstated to their former use when the construction of the RNG facility is complete.

Development at this site on lands that include the Aylmer Road (L6003); Baldonnel Road (L2001); and lands that include a small section to the north, but are primarily to the south, of the Aylmer Road, including part of the Griffin allotments, within the townland of Kilmactawlay and Milltown, Newcastle, Co. Dublin consisting of the widening, to its south, of the existing Aylmer Road (L6003) from its junction with the Baldonnel Road (L2001) for a distance of c. 520m to the west. The widened road will tie in with the existing road to the west of a proposed new roundabout. The new roundabout will be created by utilising lands to the north and south of Aylmer Road to facilitate access to a new internal estate road (270m in length) to its south-east with a new roundabout at its end that will provide future access to the lands to its north and south. The widening of the Aylmer Road to a 7.5m wide carriageway will be almost entirely to its south and will include a proposed new shared cycle path and pedestrian footpath along its southern side, with the existing hedgerow to be retained for large lengths, and a new hedgerow to be planted where the existing one is to be removed. The proposed new shared cycle and footpath will tie in with a proposed new footpath and cycle path that will be located either side of the new internal estate road. These works will include the provision of 2 new dry attenuation basins on the south side of the widened road. The development will include all ancillary infrastructural works, street lighting, site development and ground works, including fencing, signage, and landscaping.

Partial demolition (c.114.3 sq m) of existing single-storey, detached, 5-bedroom bungalow (c.216.7 sq m), refurbishment (c.102.4 sq m) and single-storey, double-pitched and flat roof extension (c.219.9 sq m), to accommodate the primary dwelling (4 bedrooms and ancillary living and welfare areas) and an attached secondary, semi-independent annexe (1 bedroom and ancillary living areas), for integrated use as a multi-generational, fully accessible, family dwelling. And all associated and ancillary site development, landscaping and boundary works, including localized site reprofiling (max. 500mm increase) to match existing ground floor level, new access ramps and covered walkway connecting entrance of house to existing driveway.