# Cloonlyon, Co. Mayo: townland, land parcels and planning Townland in the civil parish of Kilbeagh, barony of Costello, Co. Mayo; in Irish Cluain Laighean. - Area (Tailte Éireann): 931,635 m² (93.16 ha, 230.21 acres) - Land parcels (Tailte Éireann): 35 registered freehold parcels lie mostly in it, median 10,085 m² (1.01 ha, 2.49 acres) - Zoning (national zoning, MyPlan): not in a zoned settlement - Planning (National Planning Applications): 3 applications since 2010 - Civil parish: Kilbeagh, https://everytownland.com/mayo/parish/kilbeagh.md - Barony: Costello - Electoral division: Sonnagh, the unit of the census - Census 2022 (Central Statistics Office): 1,242 people lived in 457 households in the Sonnagh electoral division. 76% of households owned their home. 32% of homes were built since 2001. 17% of dwellings stood vacant on census night, and 6% were holiday homes. - County: Co. Mayo, https://everytownland.com/mayo.md - Placenames Database of Ireland: https://www.logainm.ie/en/36741 - Townland number at Tailte Éireann: 151018 - Centre: latitude 53.929696, longitude -8.832382 (WGS 84) ## Land parcels (registered freehold land, Tailte Éireann) 35 registered freehold parcels lie mostly in Cloonlyon, from 553 m² to 90,807 m² (9.08 ha, 22.44 acres); 30 neighbouring parcels touch its boundary. Largest first: - Parcel 941223: 90,807 m² (9.08 ha, 22.44 acres), https://everytownland.com/parcel/941223.md - Parcel 888205: 86,544 m² (8.65 ha, 21.39 acres), https://everytownland.com/parcel/888205.md - Parcel 1010812: 80,686 m² (8.07 ha, 19.94 acres), https://everytownland.com/parcel/1010812.md - Parcel 927735: 73,158 m² (7.32 ha, 18.08 acres), https://everytownland.com/parcel/927735.md - Parcel 870973: 60,265 m² (6.03 ha, 14.89 acres), https://everytownland.com/parcel/870973.md - Parcel 991840: 57,377 m² (5.74 ha, 14.18 acres), https://everytownland.com/parcel/991840.md - Parcel 890241: 47,897 m² (4.79 ha, 11.84 acres), https://everytownland.com/parcel/890241.md - Parcel 904265: 47,181 m² (4.72 ha, 11.66 acres), https://everytownland.com/parcel/904265.md - Parcel 882235: 43,283 m² (4.33 ha, 10.7 acres), https://everytownland.com/parcel/882235.md - Parcel 932913: 42,893 m² (4.29 ha, 10.6 acres), https://everytownland.com/parcel/932913.md - Parcel 873152: 41,268 m² (4.13 ha, 10.2 acres), https://everytownland.com/parcel/873152.md - Parcel 985415: 40,602 m² (4.06 ha, 10.03 acres), https://everytownland.com/parcel/985415.md - Parcel 3969417: 38,742 m² (3.87 ha, 9.57 acres), https://everytownland.com/parcel/3969417.md - Parcel 969557: 37,145 m² (3.71 ha, 9.18 acres), https://everytownland.com/parcel/969557.md - Parcel 880263: 36,919 m² (3.69 ha, 9.12 acres), https://everytownland.com/parcel/880263.md - Parcel 886315: 29,959 m² (3 ha, 7.4 acres), https://everytownland.com/parcel/886315.md - Parcel 900045: 29,182 m² (2.92 ha, 7.21 acres), https://everytownland.com/parcel/900045.md - Parcel 1001502: 10,085 m² (1.01 ha, 2.49 acres), https://everytownland.com/parcel/1001502.md - Parcel 2693491: 5,194 m² (0.52 ha, 1.28 acres), https://everytownland.com/parcel/2693491.md - Parcel 3924215: 4,663 m² (0.47 ha, 1.15 acres), https://everytownland.com/parcel/3924215.md - Parcel 997422: 4,145 m² (0.41 ha, 1.02 acres), https://everytownland.com/parcel/997422.md - Parcel 2740850: 3,165 m² (0.32 ha, 0.78 acres), https://everytownland.com/parcel/2740850.md - Parcel 993632: 2,778 m² (0.28 ha, 0.69 acres), https://everytownland.com/parcel/993632.md - Parcel 878694: 2,486 m² (0.25 ha, 0.61 acres), https://everytownland.com/parcel/878694.md - Parcel 994708: 2,276 m² (0.23 ha, 0.56 acres), https://everytownland.com/parcel/994708.md - Parcel 936337: 2,256 m² (0.23 ha, 0.56 acres), https://everytownland.com/parcel/936337.md - Parcel 891233: 1,921 m², https://everytownland.com/parcel/891233.md - Parcel 879253: 1,557 m², https://everytownland.com/parcel/879253.md - Parcel 947630: 1,550 m², https://everytownland.com/parcel/947630.md - Parcel 911592: 1,514 m², https://everytownland.com/parcel/911592.md - Parcel 971057: 1,143 m², https://everytownland.com/parcel/971057.md - Parcel 871274: 916 m², https://everytownland.com/parcel/871274.md - Parcel 956913: 906 m², https://everytownland.com/parcel/956913.md - Parcel 4931190: 569 m², https://everytownland.com/parcel/4931190.md - Parcel 948981: 553 m², https://everytownland.com/parcel/948981.md ## Zoning (national zoning of development plans, MyPlan) No zone of a development plan covers Cloonlyon in the national zoning. Outside zoned towns and villages, the county development plan's rural policies apply to each application. ## Planning applications whose site touches the townland (National Planning Applications, Department of Housing, Local Government and Heritage) 3 applications, newest first. - 5 Aug 2026, Mayo County Council 26179: Conditional. Permission. alterations to the front elevation of the existing dwelling house, comprising the removal of an existing window, the enlargement of the existing opening and the installation of bifolding doors, together with all associated works. File: https://www.eplanning.ie/MayoCC/AppFileRefDetails/26179/0 - 6 Jul 2026, Mayo County Council 26148: Conditional. Retention. retention permission for existing domestic shed as constructed and the minor changes to the existing dwelling house as constructed along with all ancillary site works. Previous Planning Ref. No. P99/115. File: https://www.eplanning.ie/MayoCC/AppFileRefDetails/26148/0 - 15 Sept 2025, Mayo County Council 25385: N/a. Permission. Section 5 Declaration: Replacing window with patio door. File: https://www.eplanning.ie/MayoCC/AppFileRefDetails/25385/0 Applicants are not shown. ## Designated sites (National Parks and Wildlife Service) No designated site (Special Area of Conservation, Special Protection Area, Natural Heritage Area or proposed one) touches the townland of Cloonlyon. ## Recorded monuments (Sites and Monuments Record, National Monuments Service) - MA062-138: Enclosure, https://heritagedata.maps.arcgis.com/apps/webappviewer/index.html?id=0c9eb9575b544081b0d296436d8f60f8&query=18a4b61b268-layer-9%2CSMRS%2CMA062-138----. In pasture, located on a rise on a N-facing slope. The land immediately to S is planted with forestry. This possible rath is shown on the 1837 OS 6-inch map as a circular embanked enclosure (diam. c. 30m); by the time of the 1919 edition the N half of the enclosure had been removed and it is depicted as a hachured semi-circular area (diam. c. 25m NE−SW), curving from E−WSW. It has been levelled; there is no visible trace at ground level. Compiled by: Jane O’Shaughnessy Date of upload: 26 January 2021 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). ## Architectural heritage (National Inventory of Architectural Heritage) No building of the National Inventory of Architectural Heritage stands in the townland of Cloonlyon. ## Ground and risks (Radon Risk Map of Ireland, EPA; Landslide Susceptibility Classification and LiDAR, Geological Survey Ireland) - Radon: at the centre of the townland of Cloonlyon, about 1 in 5 homes in this area is likely to have high radon levels. Testing a home: https://www.epa.ie/environment-and-you/radon/radon-testing/#d.en.82887 - 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_746, https://gsi.geodata.gov.ie/downloads/LiDAR/OPW_NASC/OPW_746.zip (ZIP). - Flooding: the flood maps of the Office of Public Works, https://www.floodinfo.ie/map/floodmaps/, linked only: their licence does not allow re-use. 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. ## Downloads - DXF, in Irish Transverse Mercator metres, with its boundary, parcels and buildings, for a drawing program: https://everytownland.com/mayo/cloonlyon.dxf - GeoJSON, in WGS 84, for a map: https://everytownland.com/mayo/cloonlyon.geojson - KML, for Google Earth: https://everytownland.com/mayo/cloonlyon.kml ## Homes sold (Residential Property Price Register) No address of the register names Cloonlyon with five sales or more. The sales of the area are on the page of Co. Mayo: https://everytownland.com/mayo.md ## Neighbouring townlands (National Statutory Boundaries, Tailte Éireann) - Barnalyra: https://everytownland.com/mayo/barnalyra.md - Carn: https://everytownland.com/mayo/carn-150582.md - Kilgarriff West: https://everytownland.com/mayo/kilgarriff-west.md - Killeen: https://everytownland.com/mayo/killeen-152050.md - Ranaranny: https://everytownland.com/mayo/ranaranny.md - Tomboholla: https://everytownland.com/mayo/tomboholla.md 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. --- Everytownland reads the registered freehold land and the statutory boundaries of Tailte Éireann, the national zoning, planning file and heritage records of the Department of Housing, Local Government and Heritage, and the Residential Property Price Register. A parcel is the land of a title, not an address. The owner's name is in the Land Registry of Tailte Éireann: a copy of the folio can be ordered on landdirect.ie, for a fee; this site names no owner. A price is the price recorded for a past sale, not a valuation. Sources: Cadastral Parcels Freehold, Townlands, Civil Parishes, Baronies, Electoral Divisions and Buildings, Tailte Éireann, CC BY 4.0; national zoning of development plans (GZT, MyPlan) and National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0, applicants not shown; designated sites, National Parks and Wildlife Service, CC BY 4.0; Sites and Monuments Record, National Monuments Service, CC BY 4.0; National Inventory of Architectural Heritage, CC BY 4.0; Residential Property Price Register, Property Services Regulatory Authority, re-used with the source acknowledged. - Page: https://everytownland.com/mayo/cloonlyon - In JSON: https://everytownland.com/api/townland/mayo/cloonlyon