Seefin

103 registered freehold parcels lie mostly in Seefin, from 466 m² to 89,000 m² (8.9 ha, 21.99 acres). The dashed line is the townland's boundary. 36 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 Seefin 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 Dec 2025Conditional

  EirGrid PLC, with the consent and approval of the Electricity Supply Board (ESB), intends to apply for permission for works to uprate the existing Castlebar - Dalton 110 kV overhead line (OHL). The proposed development will take place within the following townlands: Liscromwell Carrowkeel Brees Breandrum or Windsor Prison South Facefield Aghalusky Drumnaslooeen Mossbrook Cloontybaunan Ballinagran Ballynastangford Lower Derrynamraher Rathredmond Birchfield Cappavicar South Dooros Garrywadreen Keelkill Drumadoon Drumneen Ballinvoash Legaun Ballynastangford Upper Gneeve Ballymacloughlin Drumneen (Prendergast) Lisnaran Ballyrourke Ballynew Drumcorrabaun Pollavaddy Eskerlevally Kilmacrade Moat Drumneen South Burris Garhawnagh Castlegar Barrackland Carrowgarve Crantahar Rinnahulty Knocknamoghalaun Drumkeen Carrowmore Rathduff Clare Derreen Heathlawn Kilbeg-Malone Prison North Coolaghbaun The Castlebar - Dalton 110 kV circuit is 27.8 km in length and runs between the existing Castlebar 110 kV substation in the townland of Aghalusky in central County Mayo, to Dalton 110 kV substation located in the townland of Clare, eastern County Mayo. The OHL has a total of 144no. supporting structures. The proposed development will comprise: ? the replacement (“restringing”) of the existing OHL circuit conductor wires with a new higher capacity conductor between Castlebar 110 kV and the Dalton 110 kV substations; ? the replacement of end mast in-situ at 1no. location, with a similar structure; ? the replacement of angle masts in-situ at 6no. locations, with similar structures; ? the strengthening of tower foundations at 4no. locations; ? the strengthening of towers (i.e., member replacement) at 10no. locations; ? the painting of towers at 10no. locations; ? the replacement of tower bolts at 3no. locations; ? the replacement of polesets at 48no. locations, with similar structures. The change in structures will result in standardised heights from 16 m to 24 m along the circuit. The majority of the height increases will be between 0.1 m and 2.0 m; ? the replacement of insulating and ancillary hardware at all structure locations; ? the replacement of earthwire between structure number 132 and structure number 144; ? the replacement of stay wire / anchors and associated fittings at 16no. locations; ? the replacement of crossarms at 58no. locations; ? all associated temporary site development works to gain access to the existing structures inclu

  Permission · Mayo County Council, 2560928

• 9 Oct 2025Conditional

  EirGrid PLC, with the consent and approval of the Electricity Supply Board (ESB), intends to apply for permission for works to uprate the existing Cashla - Dalton 110 kV overhead line (OHL). Within County Mayo, the proposed development will take place within the following townlands: DALGAN DEMESNE, POLLBAUN, CARROWBEG WEST, GORTEENS, SEEFIN, BROOKHILL, CARROWMORE, BALLYHANKEEN, RUSHBROOK EAST, BALLYCUSHEEN, SCARDAUN WEST, MILLBROOK, MILFORD DEMESNE, CURRAGHADOOEY, LISDUFF, RATHGRANAGHER (MILLER), DRUMMIN WEST, CARROWBEG EAST, RATHGRANAGHER (LINDSAY), CROSSBOYNE, KILBEG-MALONE, DAVROS, DERRY, CLARE, GREAGHANS, COOLROE, ROOS, LEEDAUN The Cashla - Dalton 110 kV OHL circuit runs through County Galway and County Mayo. It is 57.7 km in length and travels from Cashla 110 kV substation in Barrettspark in central County Galway and traverses northwest to the Dalton 110 kV substation (County Mayo). The OHL has a total of 271no. supporting structures. Within the functional area of Mayo County Council, there is 24.7 km of the existing OHL circuit, with 111no. structures. Within the functional area of Galway County Council there is 33.0 km, with 160no. structures. Separate planning applications will be lodged with Galway County Council. The proposed development within Co. Mayo will comprise: • the replacement (“restringing”) of the existing OHL circuit conductor wires with a new higher capacity conductor between structure no. 160 and Dalton 110 kV substation; • the replacement of angle masts in-situ at 6no. locations, with similar structures; • the strengthening of tower foundations at 2no. locations; • the strengthening of towers (i.e., member replacement) at 6no. locations; • the painting of towers at 7no. locations; • shear block remedial works of a tower at 1no. location; • the replacement of polesets at 83no. locations, with similar structures. The change in structures will result in standardised heights from 16 m to 23 m along the circuit. The majority of the height increases will be between 0.1 m and 2.0 m (at 70no. structures), with 12no. structure replacements resulting in no change in height. Structure no. 263 will increase in height by 7.0m; • the replacement of insulating and ancillary hardware at all structures from structure no. 161 to 271; • the replacement of earthwire between structure no. 261 and structure no. 271; • the replacement of stay wire / anchors and associated fittings at 7no. locations; • the replacement of crossarms at 7

  Permission · Mayo County Council, 2560709

• 12 Aug 2025Conditional

  Permission to construct (i) Walled silage slabs with concrete apron, hardcore area and effluent tank (ii) Overground tank with roof (iii) Weighbridge and all associated site works

  Permission · Mayo County Council, 2560543

• 30 Jun 2025N/a

  Permission to construct (i) Walled silage slabs with concrete apron, hardcore area & effluent tank (ii) Overground tank with roof (iii) Weighbridge and all assorted site works

  Permission · Mayo County Council, 2560430

• 10 Sept 2024Conditional

  construct a private dwelling house, proprietary effluent treatment unit, percolation area and domestic garage along with all associated services

  Permission, 1 home · Mayo County Council, 24372

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

Designated sites

No designated site (Special Area of Conservation, Special Protection Area, Natural Heritage Area or proposed one) touches the townland of Seefin.

Recorded monuments

• MA111-057 Barrow - pond barrow
  Description

  In improved pasture, on level elevated ground, with a slight slope down to S. Good views. Circular sunken area (25m E-W, 24.5m N−S, crest of bank) defined by a broad, substantial earthen bank. The bank is quite compact, rounded on top with a broadly sloping external slope (Wth slope 5m at N, 8m at S; ext. H 0.85m at N, 1.6m at S). The inner slope of the bank merges seamlessly in a broad steep slope (Wth slope c. 10m; int. H 1.55m) with the interior, giving an overall saucer-shaped profile. However, the interior does not appear to be significantly lower than exterior ground level, except on the S side.. A scatter of stones is evident along the top and inner slope of the bank, and few stones are also scattered in the base of the interior, which is soft and wettish underfoot in the centre. There is a low section of bank at SE but it is unclear if this is an entrance. A field wall, coinciding with the townland boundary, crosses the enclosure on a NNE−SSW axis slightly E of centre. Hawthorn, ash and sycamore trees grow on the field wall. Hawthorn and gorse ring the enclosing bank. Compiled by: Jane O'Shaughnessy Date of upload: 21 December 2022

• MA119-008 Enclosure
  Description

  In gently undulating grazing land; views good but not extensive. Shown on the 1838 and 1915 OS 6-inch maps as a circular enclosure (diam. 30-35m) incorporated into later field boundaries on the N arc with a farmstead immediately to NW. The enclosure has been subsumed into a rectangular orchard dotted with apple trees and a few elder bushes. The orchard is enclosed on E, S and W by straight field walls, and is bordered on the N side by a row of three farm sheds. Mature conifers grow all around the perimeter of the orchard, just inside the line of the enclosing wall. The enclosed space (34.4m ENE−WSW; 23.3m NNW−SSE) is level and appears to be slightly raised relative to exterior ground level –this is most noticeable on the W half where the ephemeral outline of a curving rise –possibly a levelled bank- can still be traced. Compiled by: Jane O’Shaughnessy Date of upload: 31st May 2023

Architectural heritage

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

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 Seefin, 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 moderately low, low, partly inferred.

Terrain model

LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_469 (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 Seefin with five sales or more. The sales of the area are on the page of Co. Mayo.

Name

Seefin · Suí Finn

Area

2,075,180 m² (207.52 ha, 512.79 acres)

Civil parish

Crossboyne, and its townlands

Barony

Clanmorris

Electoral division

Garrymore, the unit of the census

Census 2022

473 people lived in 177 households in the Garrymore electoral division. 89% of households owned their home. 27% of homes were built since 2001. 16% of dwellings stood vacant on census night, and 5% were holiday homes.

Neighbouring townlands

Ballyhankeen, Corracrow, Gortskehy, Killeenrevagh, Killeenrevagh, Lissatava, Pollbaun, Shantallow

Placenames

Seefin 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.