Keerglen

24 registered freehold parcels lie mostly in Keerglen, from 11 m² to 4,912,404 m² (491.24 ha, 1,213.88 acres). The dashed line is the townland's boundary. 26 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 Keerglen 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.

• 16 Oct 2025Conditional

  construction of a single storey extension to rear elevation of existing semi habitable house, construction of entrance porch and three additional windows to existing front elevation of semi habitable house, construction of new raised roofline to existing semi habitable house (from 4.5m to 5.3m ridge height), construction of waste water treatment system and percolation area, complete with boundary treatment, parking and all ancillary site development works

  Permission · Mayo County Council, 25427

• 5 Aug 2025N/a

  construction of a singel storey extension to rear elevation of existing semi habitable dwelling, construction of entrance porch and three additional windows to existing front elevation of semi habitable dwelling, construction of new raised roof line to existing semi habitable dwelling house, complete with all ancillary site development works and in accordance with previous planning P19/880

  Permission · Mayo County Council, 25323

• 27 Feb 2025Conditional

  The proposed development consists of: One temporary for a period of three years, 100m high cable stayed triangular steel lattice tower meteorological mast fixed upon a wooden sleeper base of 2.4m x 2.4m; One lightning finial fitted to the higher level of the mast; One anti-climb device fitted to the lower level of the mast; 12 no. buried ground anchors located within three ‘lanes’ at 21m, 42m, 56m and 60m radii from the mast base; Meteorological instrumentation for measuring local climate conditions fixed to the meteorological mast including but not limited to: anemometers, wind vanes, temperature & pressure sensors; Shelter box with data logger and 100W photovoltaic panel fitted to the lower level of the mast; Bird flight deterrents discs fitted to each guy wire at approximately 10m intervals; Obstacle warning light fitted to the higher level of the mast; All associated infrastructure and ancillary works. A Natura Impact Statement has been prepared and will be submitted with the planning application.

  Permission · Mayo County Council, 2560104

• 29 Aug 2024Conditional

  A ten year permission for the development of a wind farm project. The development will consist of: - the construction of up to 8 No. wind turbines with a maximum overall tip height of between 176-180m, comprising rotor diameters ranging between 133-150m and hub heights ranging between 105-112m high; - associated wind turbine foundations and hard stand areas at each turbine; - 1 No. 38kV electrical substation building, compound and associated infrastructure works; - 1 No. temporary welfare site compound and associated works; - 20kV underground cables facilitating the connection of turbines to 38kV electrical substation and all associated infrastructure and works; - provision of a new temporary roadway connecting the R315 and the L51723 in the townland of Ballinglen to facilitate the delivery of turbine components and other abnormal loads; - widening and ancillary works to sections of the L51723 in the townlands of Keerglen and Ballykinlettragh; - provision of new permanent site access off the L51723; - upgrading of existing agricultural tracks and drainage infrastructure, and construction of new internal site tracks and all associated works as required; - construction of a clear-span bridge crossing the Keerglen River within the development area; - 1 no. borrow pit; - designated peat storage areas alongside internal side roads; - site drainage; - ancillary forestry felling to facilitate construction and operation of the proposed development; - all associated infrastructure and site development works. An Environmental Impact Assessment Report (EIAR) and Natura Impact Statement (NIS) have been prepared in respect of the proposed development and will be submitted with the application.

  Permission · Mayo County Council, 2460537

• 1 Nov 2019Conditional

  DEMOLITION OF SEMI HABITABLE DWELLINGHOUSE AND OUTBUILDING, CONSTRUCTION OF SINGLE STOREY DWELLING HOUSE WITH SEPARATE GARAGE, CONSTRUCTION OF WASTE WATER TREATMENT SYSTEM AND PERCOLATION AREA, COMPLETE WITH BOUNDARY TREATMENT, PARKING AND ALL ANCILLARY SITE WORKS

  Permission, 1 home · Mayo County Council, 19880

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

Designated sites

• Natural Heritage Area: Ummerantarry Bog NHA 001570

Recorded monuments

• MA013-007 Standing stone - pair
  Description

  Located on the S-facing slope of a terrace on an E−W ridge, in upland waterlogged blanket bog c. 100m south of the townland boundary between Keerglen and Ballykinlettragh. The Keerglen River is at the base of slope to S, and there are streams to E and W. Views to the S are extensive, with distinctive outline of Nephin Mountain visible in the distance. Two earthfast upright boulders set c. 2m apart on a NE-SW axis. The taller boulder (H 0.70m; Wth 0.95m at base; T 0.60m) at SW is broadly trapezoidal in shape and appears to mimic the humped shape of Nephin. The smaller boulder (H at least 0.30m; W 0.40m; T 0.40m), which appears to have a more rounded profile, is deeply sunken in the bog and largely concealed by heather. No other stones or boulders are visible in the vicinity. Notified to NMS by Fiona Maguire Attached images uploaded courtesy of Fiona Maguire: MA013-007----_01.JPG Viewed from NE MA013-007----_02.JPG Viewed from E Compiled by: Jane O'Shaughnessy Date of upload: 24 February 2022

• MA013-008 Structure
  Description

  In Keerglen valley, S of Ballycastle, located on a small terrace on the lower slopes of the N side of the valley, overlooking the river. The terrain is rough, covered in blanket bog/rough pasture of heather, sedges, moor grasses and moss. At the base of the slope, the ground levels out to broad, flat grassy bay bordering the fast-flowing river, on the S side of which the valley slope rises abruptly.   This monument is not shown on the 1838 and 1921 OS 6-inch maps.  A rectangular structure (int. L 4.1m ENE-WSW; Wth c. 1.65m NNW-SSE) defined by stones, some large and set on edge, none rising more than 0.3-0.55m above ground, and built against the rising slope on the N side. Engulfed in heather/bog, it is difficult to examine and interpret. The long axis is aligned more or less ENE-WSW, but for convenience will be described here as if it were E-W. The W side consists of a heather-covered, inward-facing scarp (H 0.3-0.4m), with a low, rounded stone (H 0.3m; L c. 0.4m NE-SW) and the tip of another stone visible at the SW corner. The N long side is composed of at least three upright stones, their N sides concealed against the rising slope: At the W end of the N side is a large, slab-like stone (L c. 1m; H 0.55m) set on edge. Abutting the E end of this slab is a blocky stone (H 0.5m; L 0.38m NE-SW) which protrudes c. 0.35-0.4m to S into the interior space; and abutting the E side of the latter, is another slab-like stone (L c. 0.9m; H c. 0.3m). The E end of the N side appears to have been disturbed or cut back slightly; a stone of unknown size protrudes from the heather, seemingly offset to the N from the line of the other stones on the N side. The E side is defined by two low, rounded stones (max. dim. 0.4-05m; H 0.3-0.45m) flanking a gap (Wth 0.65m), possibly an entrance.  The S long side features a large stone set upright on edge (L c. 1.4m; H 0.4m), positioned roughly mid-way along that side. Flanking it to E and W are linear clumps of heather, which appear to conceal low stones.  A large, upright stone (L c. 0.9m NE-SW; 0.27m NW-SW; H 0.6m), is located 0.8m S of SW corner of the structure.  A row of three close-set, low rounded stones (H 0.1-0.3m; max. dim. 0.2-0.6m) extend to SW from the SE corner of the structure. There are no roofstones and no obvious sign of a cairn. A rough, E-W heather-covered scarp, a remnant of a field boundary, lies just over 2m to S of the structure, and other relict 18th/19th field banks/walls are nearby at W.    It is difficult to interpret this monument. It may be a vernacular structure, such as a hut site or animal pen, possibly associated with the settlement named Doondragon, shown c. 700m to E on the OS 6-inch maps.  However, the degree to which the stones are sunken in the bog suggests some antiquity. A number of the stones are megalithic in appearance, but others seem rather insubstantial. Currently the evidence is insufficient to classify it as a megalithic tomb, and the overall nature of the structure remains uncertain.   Compiled by: Jane O’Shaughnessy

• MA014-042001 Ringfort - cashel
  Description

  Situated in rough mountainous terrain sloping very steeply down from S to N to the Keerglen River, a substantial meandering river whose steep high bank borders the N side of the cashel. This cashel is named ‘Doondragon or the Dragon’s Grave’ on the 1922 OS 6-inch map. Raised circular area (diam. 26.2m) enclosed by a largely grassed-over, ruined wall of drystone masonry. The wall is reduced to foundation level at NNW−ENE where the cashel is bordered by the river. There is a souterrain (MA014-042002-) within the cashel wall at SSW. Aldridge (1961, 127) attributes significance to the cashel as it lies on an ancient routeway along the valley of the Keerglen River, possibly the route of the cattle raid described in the medieval saga, Táin Bó Flidhais. He noted that in the cashel ‘there was reputed to be a ‘Giant’s Grave’ covered with huge flags in it, and a passage from the river bank running into the Dun.’ This undoubtedly relates to the souterrain (MA014-042002-), which appears to have inspired the placename, ‘Dragon’s Grave’. There is a small cairn (MA014-123----) 25m to S, and an enclosure (MA014-122----) c. 100m to E. Compiled by: Jane O'Shaughnessy Date of upload: 24 February 2022

• MA014-042002 Souterrain
  Description

  In a cashel (MA014-042001-). A souterrain is constructed within the enclosing wall of the cashel at SSW. It consists of a collapsed circular chamber (diam. at base 1.8m) of beehive type drystone construction, with blocked up passages extending from it to NNW, SSE and possibly also to ENE. Compiled by: Jane O'Shaughnessy Date of upload: 24 February 2022

• MA014-043 Burial ground
  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.

• MA014-044 Ringfort - rath
  Description

  In rough mountainous terrain, situated on the S bank of the Keerglen River. Raised subrectangular area (23.7m NNE-SSW; 18.9m WNW-ESE) enclosed by a substantial earthen bank, except from W–WNW where it is defined by a steep river bank. In the SW quadrant of the interior are the wall footings of a subrectangular house (MA014-044001-). A rubble-filled depression within the house may indicate a souterrain (MA014-044002-). Compiled by: Jane O'Shaughnessy Date of upload: 6 February 2015

• MA014-044001 House - indeterminate date
  Description

  In the SW quadrant of a rath (MA014-044----). This house consists of a subrectangular area (ext. dims. 10.1m NW-SE; 8.8m NE-SW) defined by a largely grassed-over, much denuded drystone wall (Wth 0.6m). Within the house, a rubble-filled depression may indicate a souterrain (MA014-044002-). Compiled by: Jane O'Shaughnessy Date of upload: 6 February 2015

• MA014-044002 Souterrain
  Description

  In a subrectangular house (MA014-044001-) located in the SW quadrant of a rath (MA014-044----). An irregular-shaped, rubble-filled depression in the interior of the house may marks the site of a souterrain. Compiled by: Jane O'Shaughnessy Date of upload: 6 February 2015

• MA014-122 Enclosure
  Description

  Situated in rough mountainous terrain sloping very steeply down from S to N to the Keerglen River, a substantial meandering river whose steep high bank borders the N side of the enclosure. This small enclosure is not indicated on any edition of the OS 6-inch maps. Raised D-shaped area (15.8m ENE-WSW; 5.6m NNW-SSE) enclosed on the curving S side by a grass-covered wall of drystone masonry and on the straight N side by the steep river bank. There is a cashel (MA014-042001-) c. 100m to W. Compiled by: Jane O'Shaughnessy Date of upload: 24 February 2022

• MA014-123 Cairn - unclassified
  Description

  Situated in rough mountainous terrain sloping very steeply down from S to N to the Keerglen River. This cairn is not shown on any edition of the OS 6-inch maps. It consists of a sub-circular heap (3.1m NNW-SSE; 2.9m ENE-WSW; max. H 0.6m) of small and medium sized stones. There is a cashel (MA014-042001-) c. 25m to N and an enclosure (MA014-122----) c. 100m to NE. Compiled by: Jane O'Shaughnessy Date of upload: 24 February 2022

Architectural heritage

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

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 Keerglen, about 1 in 5 homes in this area is likely to have high radon levels. Testing a home

Landslides

The Geological Survey did not answer.

Terrain model

The Geological Survey did not answer.

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 Keerglen with five sales or more. The sales of the area are on the page of Co. Mayo.

Name

Keerglen · Caolghleann

Area

7,121,647 m² (712.16 ha, 1,759.8 acres)

Civil parish

Kilfian, and its townlands

Barony

Tirawley

Electoral division

Kilfian West, the unit of the census

Census 2022

109 people lived in 50 households in the Kilfian West electoral division. 74% of households owned their home. 11% of homes were built since 2001. 23% of dwellings stood vacant on census night, and 2% were holiday homes.

Neighbouring townlands

Altderg, Annagh More, Ballinglen, Ballykinlettragh, Cluddaun, Clydagh, Ummerantarry

Placenames

Keerglen 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.