Colganstown

8 registered freehold parcels lie mostly in Colganstown, from 200 m² to 283,269 m² (28.33 ha, 70 acres). The dashed line is the townland's boundary. 19 neighbouring parcels touch it.

Download the townland as DXF, in Irish Transverse Mercator metres, with its boundary, parcels and buildings, or as GeoJSON or KML.

• P1RU (Agriculture)
  South Dublin County Development Plan 2022-2028, South Dublin · 25 parcels The zoning objective in the plan
• G1OS (Open space, park)
  South Dublin County Development Plan 2022-2028, South Dublin · 0 parcels The zoning objective in the plan

Source: Tailte Éireann and the Department of Housing (MyPlan), national zoning, CC BY 4.0.

• 18 Dec 2025Registered application

  The proposed development will primarily consist of a proposed Raw Water Intake & Pumping Station at Garrynatineel, Ballina, Co. Tipperary; a proposed Water Treatment Plant at Incha Beg, Birdhill, Co. Tipperary; a proposed Break Pressure Tank at Knockanacree, Cloughjordan, Co. Tipperary; a proposed Booster Pumping Station at Coagh Upper, Birr, Co. Offaly; a proposed Flow Control Valve at Commons Upper, Celbridge, Co. Kildare; a proposed Termination Point Reservoir at Loughtown Upper, Peamount, County Dublin; c. 172km of pipeline connecting the water infrastructure sites; uprating and associated works to the existing Ardnacrusha - Birdhill 38kV line and Ardnacrusha - Birdhill - Nenagh 38kV line, works at the existing Birdhill 38 kV electricity substation, power connections to infrastructure and all ancillary works above and below ground. The nature, extent and location of the proposed development is fully described in the application plans and particulars. A Natura Impact Statement (NIS) and Environmental Impact Assessment Report (EIAR) have been prepared in respect of the Proposed Development. A copy of this application may also be viewed on the application website www.watersupplyproject.ie Public Consultation in respect of this application runs for the period commencing on the 6th January 2026. Any submission/observation must be received by An Coimisiún Pleanála no later than 5.30pm on the 25th February 2026. Submissions or observations may be made only to An Coimisiún Pleanála. Submissions can be made by hand or post to, 64 Marlborough Street, Dublin 1, or by email to laps@pleanala.ie.

  Strategic infrastructure application · South Dublin County Council, ACP-323980-25

• 1 Apr 2025Grant permission

  Demolish the existing front porch; Demolish an existing single-storey rear Utility extension; Construct a dormer extension to the front of the existing house; Construct a single-storey and two-storey extension to the rear of the house; Convert the existing attic space, Carry out general alterations & refurbishment of the existing house; Construct a new entrance gate and walls to replace the existing entrance; Relocate existing external garden sheds and Carry out associated site works

  Permission · South Dublin County Council, SD25B/0174W

• 12 Jun 2024Grant permission

  Permission is sought for a single storey Office Extension with a flat roof for Ground Investigations Ireland Ltd.

  Permission · South Dublin County Council, SD24A/0149

• 24 Nov 2023Grant permission

  Two storey office extension with a flat roof for Ground Investigations Ireland Ltd.

  Permission · South Dublin County Council, SD23A/0213

• 16 Nov 2018Grant permission

  Two storey 38sq.m office extension with flat roof; changes to north and east elevations at ground and first floor level.

  Permission · South Dublin County Council, SD18A/0412

• 8 Jul 2015Refuse permission

  Construction of a new 270m long fixed timber jetty to facilitate 6 boats east of Hazelhatch Bridge. These will be fully serviced with lighting, water, electricity and access to boat pump-out and waste disposal facilities. These moorings will be classified as Extended Term Services Moorings and made available to appropriate permit holders. Upgrade and extension of the existing visitor mooring area on the quay wall along the north east side of Hazelhatch Bridge. This shall include cleaning and re-pointing to provide moorings for 4-5 transient boats visiting the area. This work will be in the curtilage of Hazelhatch Bridge a protected structure. Formalise an existing hard standing area used for parking to facilitate approximately 15 vehicles. The existing canal banks in the vicinity of the proposed works shall be refurbished and upgraded to address historical leakage problems with towpaths resurfaced.

  Permission · South Dublin County Council, SD15A/0189

• 20 Feb 2014Grant permission

  Extension to rear of existing house including conversion of garage and boiler room into a family flat with 2 no. rooflights and removal of mobile home.

  Permission · South Dublin County Council, SD14B/0043

• 25 Sept 2009Grant permission

  (a) 4 bedroom, 2 storey dwelling house, (b) provision of a new treatment unit & percolation area, (c) all associated site works.

  Permission, 1 home · South Dublin County Council, SD09A/0114

• 8 Oct 2008Refuse permission

  (a) Construction of a new 4 bedroom, 2 storey dwelling house (b) Provision of a new treatment unit & Percolation area. (c) All associated site works

  Permission, 1 home · South Dublin County Council, SD08A/0695

• 9 Dec 2004Withdraw the application

  Single storey dwelling with septic tank. The proposed dwelling is to be accessed by sharing the existing driveway to the dwelling currently on the site by means of a right of way.

  Permission, 1 home · South Dublin County Council, SD04A/0913

• 28 Mar 2001Refuse permission

  Retention of storage container for canoes.

  Permission · South Dublin County Council, S01A/0178

• 19 Jun 2000Grant permission

  Proposed new bungalow, septic tank and temporary access through Stramorne.

  Permission · South Dublin County Council, S00A/0179

• 17 Apr 2000Refuse permission

  Retention of storage container for canoes.

  Permission · South Dublin County Council, S00A/0246

Source: National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0. Applicants are not shown.

Designated sites

• Proposed Natural Heritage Area: Grand Canal 002104

Recorded monuments

No recorded monument lies in the townland of Colganstown.

Architectural heritage

• Colganstown House, country house, 1750–1770 · Regional interest
  Description

  Three-bay two-storey over basement house with three-bay two-storey flanking wings, built c.1760, with rendered walls and stone quoins. House has a breakfront centre with a Diocletian window above a tripartite fanlighted and pedimented doorway.The back elevation is of one-bay on either side of a curved central bow, into which the staircae extends. Hipped slate roof with parapet, and single-storey rubble stone outbuildings. Rusticated gate piers with iron gates to site.

Designated sites: National Parks and Wildlife Service. Recorded monuments: Sites and Monuments Record, National Monuments Service. Buildings: National Inventory of Architectural Heritage. Department of Housing, Local Government and Heritage, CC BY 4.0. Works at or in relation to a recorded monument need two months' written notice to the National Monuments Service (National Monuments (Amendment) Act 1994, section 12).

Radon

At the centre of the townland of Colganstown, about 1 in 20 homes in this area is likely to have high radon levels. Testing a home

Landslides

The 1:50,000 map rates the landslide susceptibility here as low, partly inferred.

Terrain model

LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_2940 (ZIP).

Flooding

The Office of Public Works publishes its flood maps on floodinfo.ie.

Radon Risk Map of Ireland, Environmental Protection Agency, and Landslide Susceptibility Classification, Geological Survey Ireland, both under CC BY 4.0. LiDAR: contains Irish Public Sector Data (Geological Survey Ireland & the Office of Public Works) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.

No address of the register names Colganstown with five sales or more. The sales of the area are on the page of Co. Dublin.

Name

Colganstown · Baile Uí Cholgan

Area

822,441 m² (82.24 ha, 203.23 acres)

Civil parish

Newcastle, and its townlands

Barony

Newcastle

Electoral division

Newcastle, the unit of the census

Census 2022

5,552 people lived in 1,814 households in the Newcastle electoral division. 75% of households owned their home. 66% of homes were built since 2001. 5% of dwellings stood vacant on census night, and 0% were holiday homes.

Neighbouring townlands

Commons, Dangan (Co. Kildare), Hazelhatch, Newcastle Farm, Ringwood, Skeagh

Placenames

Colganstown on logainm.ie, the Placenames Database of Ireland

Townlands, civil parishes, baronies and electoral divisions, National Statutory Boundaries, Tailte Éireann, CC BY 4.0. Census 2022, Small Area Population Statistics by electoral division, Central Statistics Office, CC BY 4.0. A townland is the smallest land division of Ireland, and the unit of a rural address. Old registers such as the 1901 and 1911 censuses file it under its civil parish and barony.