Derryool
Derryool is a townland in the civil parish of Ballyhean, barony of Carra, Co. Mayo. Its name in Irish is Doire Ghabhla.
Parcel 970979
- Area
- 204,215 m² (20.42 ha, 50.46 acres)
- Buildings
- No building touches it.
- Zoning
- No zone of a development plan covers it in the national zoning. Outside zoned towns and villages, the county development plan's rural policies apply.
- Townland
- Derryool
Planning applications on this parcel
29 Jun 2026N/a
Mountain Dew Property Company Ltd. intends to apply for a 10-year planning permission for development at Derryool, Rocklands, Castlebar, Co. Mayo, comprising: The development will consist of the re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road and pre-existing deposits of topsoil and stone that were claimed from these lands.
Permission · Mayo County Council, 2660508
19 Jun 2026N/a
Mountain Dew Property Company Ltd. intends to apply for a 10-year planning permission for development at Derryool, Rocklands, Castlebar, Co. Mayo, comprising: The development will consist of the re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road and pre-existing deposits of topsoil and stone that were claimed from these lands.
Permission · Mayo County Council, 2660483
6 Dec 2025N/a
The re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road. A Natura Impact Statement is also included with the application documents.
Permission · Mayo County Council, 2560886
17 Nov 2025N/a
The re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road. A Natura Impact Statement is also included with the application documents.
Permission · Mayo County Council, 2560817
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 this parcel.
Recorded monuments around it
No zone of notification of a recorded monument touches this parcel.
Architectural heritage
No building of the National Inventory of Architectural Heritage stands on this parcel.
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).
Ground and risks
- Radon
- At the centre of this parcel, 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 low.
- Terrain model
- LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_343 (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.
Download this parcel as DXF, in Irish Transverse Mercator metres, with its neighbours and buildings, for a drawing program. GeoJSON, in WGS 84, suits a map, and KML opens in Google Earth.
Registered freehold land, Tailte Éireann, CC BY 4.0. 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.
- Area
- 56.8 ha
- 140 acres
- Land parcels
- 9
- registered freehold, median 14,482 m² (1.45 ha, 3.58 acres)
- Zoning
- —
- not in a zoned settlement
- Planning
- 6
- applications since 2010
Land parcels
Registered freehold land, Tailte Éireann
9 registered freehold parcels lie mostly in Derryool, from 339 m² to 204,215 m² (20.42 ha, 50.46 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.
Zoning
Development plans, national zoning
No zone of a development plan covers Derryool 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.
Planning applications
Sites that touch the townland, newest first
29 Jun 2026N/a
Mountain Dew Property Company Ltd. intends to apply for a 10-year planning permission for development at Derryool, Rocklands, Castlebar, Co. Mayo, comprising: The development will consist of the re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road and pre-existing deposits of topsoil and stone that were claimed from these lands.
Permission · Mayo County Council, 2660508
19 Jun 2026N/a
Mountain Dew Property Company Ltd. intends to apply for a 10-year planning permission for development at Derryool, Rocklands, Castlebar, Co. Mayo, comprising: The development will consist of the re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road and pre-existing deposits of topsoil and stone that were claimed from these lands.
Permission · Mayo County Council, 2660483
6 Dec 2025N/a
The re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road. A Natura Impact Statement is also included with the application documents.
Permission · Mayo County Council, 2560886
17 Nov 2025N/a
The re-contouring of agricultural land by the use of imported by-product of soil and stone over an area of 0.79 hectares on an overall site area of 1.05 hectares for the benefit of agricultural land. The deposition area will accommodate 25,200 tonnes of soil and stone. Permission is sought for access, fencing and all associated site development works and services and any mitigation measures such as silt fencing to protect watercourses. Permission is also sought for the retention of an existing access road. A Natura Impact Statement is also included with the application documents.
Permission · Mayo County Council, 2560817
17 Feb 2025Conditional
The construction of a new dwelling house and domestic garage, on-site wastewater treatment system, a new access road, connections to public services and ancillary site development works above and below ground.
Permission, 1 home · Mayo County Council, 2560083
25 Apr 2024Refused
The construction of a new dwelling house and domestic garage, on-site wastewater treatment system, a new access road, connections to public services and ancillary site development works above and below ground.
Permission · Mayo County Council, 2460236
Source: National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0. Applicants are not shown.
Nature and heritage
Designated sites and recorded monuments
Designated sites
No designated site (Special Area of Conservation, Special Protection Area, Natural Heritage Area or proposed one) touches the townland of Derryool.
Recorded monuments
- MA078-049 Ringfort - rath
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
No building of the National Inventory of Architectural Heritage stands in the townland of Derryool.
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).
Ground and risks
Radon, landslides, flooding
- Radon
- At the centre of the townland of Derryool, 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 low.
- Terrain model
- LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_343 (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.
Homes sold
Property Price Register
No address of the register names Derryool with five sales or more. The sales of the area are on the page of Co. Mayo.
The townland
- Name
- Derryool · Doire Ghabhla
- Area
- 568,406 m² (56.84 ha, 140.46 acres)
- Civil parish
- Ballyhean, and its townlands
- Barony
- Carra
- Electoral division
- Castlebar Rural, the unit of the census
- Census 2022
- 7,935 people lived in 2,987 households in the Castlebar Rural electoral division. 68% of households owned their home. 39% of homes were built since 2001. 7% of dwellings stood vacant on census night, and 1% were holiday homes.
- Neighbouring townlands
- Cornamarrow, Cregganbell, Curry, Derreenmulroy, Drumkeaghta, Lisnaponra North
- Placenames
- Derryool 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.