Derrakillew

46 registered freehold parcels lie mostly in Derrakillew, from 109 m² to 587,598 m² (58.76 ha, 145.2 acres). The dashed line is the townland's boundary; 15 neighbouring parcels touch it.

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

No zone of a development plan covers Derrakillew 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.

• 9 Jun 2026N/a

  permission to construct a dwelling house, proprietary effluent treatment system and associated percolation are including all ancillary site works and services

  Permission · Mayo County Council, 26128

• 13 Oct 2025Conditional

  Construction of a private dwelling house, domestic garage and effluent treatment system together with all ancillary site works.

  Permission, 1 home · Mayo County Council, 2560716

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

Designated sites

• Special Area of Conservation: Mweelrea/Sheeffry/Erriff Complex SAC 001932
• Proposed Natural Heritage Area: Mweelrea/Sheeffry/Erriff Complex 001932

Recorded monuments

No recorded monument lies in the townland of Derrakillew.

Architectural heritage

No building of the National Inventory of Architectural Heritage stands in the townland of Derrakillew.

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

About 1 in 10 homes in this area is likely to have high radon levels. Testing a home

Landslides

Susceptibility moderately high, moderately low, low, low (inferred), on the 1:50,000 map; parts are water.

Terrain model

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

Flooding

The flood maps of the Office of Public Works: floodinfo.ie.

Radon Risk Map of Ireland, Environmental Protection Agency; Landslide Susceptibility Classification, Geological Survey Ireland; both 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 Derrakillew with five sales or more. The sales of the area are on the page of Co. Mayo.

Name

Derrakillew · Doire Choilleadh

Area

2,280,990 m² (228.1 ha, 563.64 acres)

Civil parish

Aghagower, and its townlands

Barony

Murrisk

Electoral division

Slievemahanagh, the unit of the census

Census 2022

Slievemahanagh electoral division: 525 people in 168 households; 88% of households own their home; 41% of homes were built since 2001; 10% of dwellings stood vacant on census night, and 7% were holiday homes.

Neighbouring townlands

Carrowkennedy, Carrowrevagh, Derryaun, Derryherbert, Letterbrock, Oughty

Placenames

Derrakillew 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.