Trean

26 registered freehold parcels lie mostly in Trean, from 396 m² to 48,597 m² (4.86 ha, 12.01 acres). The dashed line is the townland's boundary. 20 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.

No zone of a development plan covers Trean in the national zoning. Outside zoned towns and villages, the county development plan's rural policies apply to each application.

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

• 15 Jun 2026N/a

  to renovate and extend an existing derelict house to include kitchen, living, utility areas, bathrooms, bedrooms and detached shed and a new relocated effluent treatment system with all associated site works

  Permission, 1 home · Galway County Council, 2660982

• 29 Oct 2025Refused

  to renovate and extend an existing derelict house to include kitchen, living, utility areas, bathrooms, bedrooms and detached shed with all associated modifications and site works

  Permission, 1 home · Galway County Council, 2561586

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

Designated sites

• Natural Heritage Area: Cloon And Laghtanabba Bog NHA 002374

Recorded monuments

• GA022-129 Ringfort - cashel
  Description

  The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To access available information for research purposes please make an appointment in advance with the Archive Unit (open Fridays 10.00 am – 5.00 pm), Department of Housing, Local Government and Heritage, The Custom House, Dublin 1 D01W6XO or email NMarchive@housing.gov.ie.

Architectural heritage

• Bridge, 1790–1830 · Regional interest
  Description

  Single-arch rubble limestone road bridge, built c.1810. Round arch with roughly-dressed voussoirs, roughly coursed walls and rubble stone approaches, with replacement copings of beach cobbles and rubble stone to parapets.

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 Trean, about 1 in 5 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 high, moderately high, moderately low, low, partly inferred. Parts of the land are water.

Terrain model

No LiDAR survey of the Office of Public Works covers the centre of the townland of Trean.

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 Trean with five sales or more. The sales of the area are on the page of Co. Galway.

Name

Trean · An Trian

Area

427,589 m² (42.76 ha, 105.66 acres)

Civil parish

Omey, and its townlands

Barony

Ballynahinch

Electoral division

Cleggan, the unit of the census

Census 2022

304 people lived in 112 households in the Cleggan electoral division. 79% of households owned their home. 19% of homes were built since 2001. 9% of dwellings stood vacant on census night, and 20% were holiday homes.

Neighbouring townlands

Cleggan, Cloon, Knockbrack, Moorneen

Placenames

Trean 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.