Observation pack · South Dublin County Council

Castlebagot, Aylmer Road, Dublin 22

whether a proposed temporary traffic diversion requires within existing LMA of the worksite needs Planning Permission.

Observations close 2 Oct 2026 17 days left

5 weeks from receipt (received 28 Aug 2026) · s.34 Planning and Development Act 2000 · art. 29 Regulations 2001 · fee €20 · council decision due 24 Sept 2026

The application

Reference: ED26/0092 · full record
Authority: South Dublin County Council
Type: Declaration of Exemption Sect. 5
Status: Officer Allocation
Applicant: not published by the national dataset — see the council register
Units: —
Floor area: —
Site area: 8,985 m²
Received: 28 Aug 2026
We first saw it: 15 Sept 2026, 20:40
Decision due: 24 Sept 2026
Decision: not yet decided

The national dataset truncates descriptions (80 characters for DLR, 70 for Fingal) and omits the applicant. The full description and the drawings are on the council register linked in step 1.

How to submit an observation

Read the file on the council register.Drawings, planning statement and site notices are at https://planning.agileapplications.ie/southdublin/application-details/70927.
Write your observation.Quote ED26/0092 at the top, give your name and the address the authority should reply to, and confine it to planning matters — zoning objective, height, overlooking, traffic, drainage, heritage. What you say here is what you can later appeal on.
Pay the €20 fee.Every submission needs it; without it the observation is invalid and is returned. South Dublin County Council takes it online with the submission or at the counter.
Submit before 2 Oct 2026.Online through the register above, or in writing to the Planning Department, South Dublin County Council. The test is the date the authority receives it, not the date you post it.
Keep the acknowledgement.The council's receipt is your proof of a valid observation — see below.

Statutory basis. Section 34(1) of the Planning and Development Act 2000 (as amended) requires a planning authority to consider any submission or observation made to it in accordance with the Regulations. Article 29 of the Planning and Development Regulations 2001 (as amended) sets the window: a submission or observation must be received by the authority within five weeks beginning on the date of receipt of the application, and must be accompanied by the prescribed fee of €20. A submission received after the window, or without the fee, is invalid and the authority must return it.

After you submit: keep the acknowledgement. Under the 2024 Act it secures your right to appeal — only the applicant and a person who made a valid observation may bring the council's decision to An Coimisiún Pleanála, within four weeks of the decision. Making a valid observation is also what buys a right of appeal: under s.37(1) of the 2000 Act, only the applicant and a person who made a valid submission or observation to the planning authority may appeal the decision to An Coimisiún Pleanála (within four weeks of the decision). Missing the five-week window closes both doors.

What the site is zoned

Code	Objective	Plan	In force
C2.1 Economic development and employment	EE: To provide for enterprise and employment related uses	SD-001:DP:south-dublin-county-development-plan-2022-2028	8 Mar 2022 → 8 Mar 2028
C2.1 Economic development and employment	EE: To provide for enterprise and employment related uses	SD-001:DP:south-dublin-county-development-plan-2022-2028	8 Mar 2022 → 8 Mar 2028

An application that accords with the zoning objective is hard to resist on principle; one that does not may be a material contravention, which the council can only grant by the s.34(6) procedure with its own notice and window.

Sources: SDCC SD-001:DP:south-dublin-county-development-plan-2022-2028, SDCC SD-001:DP:south-dublin-county-development-plan-2022-2028 · fetched 11 Sept 2026, 23:18

Source	Licence	Fetched	Link
SDCC SD-001:DP:south-dublin-county-development-plan-2022-2028	—	11 Sept 2026, 23:18	open
SDCC SD-001:DP:south-dublin-county-development-plan-2022-2028	—	11 Sept 2026, 23:18	open

Designations on or near the site

Radon risk area × 1
About 1 in 10 homes in this area is likely to have high radon levels
Recorded monument × 1
R183283
OPW flood extent nearby floodinfo.ie
Shown as a flag only — the OPW licence does not allow us to redistribute the extent.

1 layer present but masked: flood_cfram — source licence forbids redistribution (CC-BY-NC-ND); shown as a boolean and a link only

Nearby precedents within 500 m, last 5 years

Decisions

Reference	Decision	Decided	Units	Distance	Description
SD20A/0324/EP	Grant extension of duration of permission	23 Jun 2026	—	341 m	Demolition of existing two storey dwelling of 'Bulmer' and associated outbuildings and demolition of the existing single storey house of 'Little Acre' and its associated garage and other buildings; demolition of single storey stable building on the overall site; construction of 2 two storey Information Communication Technology (ICT) facilities each with three storey plant levels and associated ancillary development which will have a gross floor area of 30,518sq.m on an overall site of 8.2 hectares; 1 two storey ICT facility (building A) will be located to the south-east of the site and will have a gross floor area of 15,196sq.m including 18 emergency generators located at ground and first floor level within a compound to the north-eastern side of the ICT facility with associated flues that will be 25m in height and will be grouped in four groups of four and 1 group of two flues (18 flues overall); 1 two storey ICT facility (building B) will be located to the north-west of Building A and centrally within the overall site and will have a gross floor area of 15,196sq.m including 18 emergency generators located at ground and first floor level within a compound to the north-eastern side of the ICT facility with associated flues that will be 25m in height and will be grouped in four groups of four and 1 group of two flues (18 flues overall); each of the two ICT facilities will include data storage rooms, associated electrical and mechanical plant rooms, loading bays, maintenance and storage spaces, office administration areas; 2 pump rooms of 25sq.m each (4 overall - 100sq.m) plus water storage tanks and plant as well as a separate house generator that will provide emergency power to the admin and ancillary spaces; each generator will also include a diesel belly tank with a single refuelling area to serve the proposed emergency generators; 1 temporary and single storey substation (26sq.m); ancillary site development works including attenuation ponds and the installation and connection to the underground foul and storm water drainage network and installation of utility ducts and cables; other ancillary site development works will include hard and soft landscaping throughout the site, lighting, fencing, signage, central services road, security gate, sprinkler tank house and 80 car parking spaces and 17 sheltered bicycle parking spaces; the development will be enclosed with landscaping to all frontages including a wetland to the south-east and will be accessed from the Peamount Road (R120) located within the townland of Milltown on lands that contain the 2 residential properties of 'Little Acre' and 'Bulmer' as well as agricultural lands and buildings which are located to the north of the Peamount Road and the lands to the north and within the overall site are subject to a concurrent application for a Power Generation Facility under Reg. SD20A/0058; An Environmental Impact Assessment Report (EIAR) is included with the application.
SD20A/0295/EP	Grant extension of duration of permission	26 May 2026	—	170 m	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.
SD25A/0251W	Grant permission	4 Dec 2025	—	168 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.
SD25A/0135W	Grant permission	20 Nov 2025	—	321 m	The development will consist of the omission of a permitted above ground installation (AGI) compound under Reg. Ref.: SD20A/0058, the provision of an AGI at an alternate location within the site, and the provision of a Pressure Reduction Metering System (PRMS) and a foul pumping station, along with road upgrades to the public road (R120 Peamount Road), and provision of a foul sewer connection from the site to the northeast, via Peamount Road and Old Nangor Road. The relocated AGI, PRMS compound, and foul pumping station will be located in the southeastern corner of the site. It is proposed to demolish an existing two storey vacant house (with a gross floor area of 235 sq.m.) to provide for the AGI, PRMS compound, and foul pumping station. The relocated Gas AGI and the PRMS will be located within fenced compounds and will comprise of the following buildings and gas-related infrastructure: - 2 no. AGI buildings comprising AGI Building 1 with a total area of c.18 sq.m and overall height of c. 3.4m and AGI Building 2 with a total area of c. 8 sqm and overall height of c. 3.1m; - A Boiler House Kiosk with a total area of c. 12 sq.m and overall height c. 3.5m and boiler flues with a total height c. 5.4m; - A new E&I Kiosk with a total area of c. 12 sq.m and overall height of c. 2.7m; - A new Control Room with a total area of c. 12 sq.m and overall height of c. 3m; - A new Skid House with a total area of c. 123 sq.m and overall height of c. 3.3m; - The compounds will also accommodate associated valves and pipework. A new foul water pumping station with associated chambers, meters and a 24-hour storage tank will be provided to the east of the AGI and PRMS compounds. The proposed developmbent includes all associated and ancillary works including site lighting, boundary treatments, landscaping, drainage and infrastructure. The proposed development is located within a site subject to an application for an EPA Industrial Emissions (IE) Directive license.
SD25A/0035W	Grant permission	10 Apr 2025	—	168 m	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
SD24A/0107W	Grant permission	14 Oct 2024	—	0 m	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.
SD24A/0164W	Refuse permission	22 Aug 2024	—	455 m	Ten-year planning permission is sought for the expansion of existing Google Ireland Limited operations at Grange Castle Business Park South, Dublin, including the development of a 72,400m² data storage facility which will incorporate data halls with associated support areas, a high voltage compound, offices and staff facilities, a loading area, mechanical and electrical yards, internal and external utilities, security fence and gates, landscaping including acoustic screening, 2 no. stormwater attenuation ponds, additional internal vehicle and pedestrian infrastructure, together with ancillary buildings and site infrastructure. The development also includes the creation of a new active travel thoroughfare connecting Grange Castle Business Park South and Profile Park Road.
SD18A/0134/EP2	Grant extension of duration of permission	8 Nov 2023	—	170 m	Demolition of the existing single storey house of 'Erganagh' and the construction of a two storey data centre and delivery bays with associated three storey office block and services that will have a gross floor area of 35,426sq.m on an overall site of 9.2 hectares. The two storey data centre facility and delivery bay (32,419sq.m) will be separated into two adjoined blocks over two floors with a single data hall on each floor of each data centre with service and technical space around each data hall (4 data halls overall) with a two storey delivery bay attached to the east of the data centre block. A three storey office block and delivery bay (2,882sq.m) is attached to the west of the data centre block. The data centre will be served by services and plant to the north of the data centre blocks that will include 32 standby generators with 2 associated flues per generator (64 in total) and grouped into 16 towers of flour flues each (each 20m high). There are proposed to be 32 acoustically attenuated chillers located on the upper level plant gantries to the north of the data hall blocks (eight on each gantry). The development will also include a new substation with associated transformer yard and single storey transformer building (125sq.m) that will be located to the northeast of the site. The development will be accessed from the Grange Castle South Access Road from the north via the Baldonnel Road and will also include ancillary site development works, including 2 attenuation ponds, to connect to existing Grange Castle infrastructural services as well as fencing, signage, services road, entrance gate, 70 car parking spaces including 3 disabled car parking spaces, and 30 sheltered bicycle parking spaces. The development will be enclosed with landscaping to all frontages including a wetland to the west all on a site (9.2ha) located within lands in the Grange Castle Business Park South and the residential properties of Erganagh, Kent Cottage and Weston Lodge on land with 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. An Environmental Impact Assessment Report (EIAR) has been submitted with this application.

Appeals

ACP case	Type	Outcome	Decided	Distance
320852	Planning Appeal	pending	18 Sept 2024	455 m
314567	Electricity Development Application	Granted with conditions	28 Nov 2023	231 m

If neighbours here have appealed before and lost, the inspector's report on that case is the single most useful thing to read.

What has happened on this file

28 Aug 2026 New application · observations close 2 Oct 2026

Generated from the Planning Register store; nothing was fetched live for this page. Source: national planning dataset, fetched 15 Sept 2026, 20:40. Not legal advice — confirm the deadline with South Dublin County Council before relying on it.