Derrynagun
Derrynagun is a townland in the civil parish of Lemanaghan, barony of Garrycastle, Co. Offaly. Its name in Irish is Doire na gCon.
- Area
- 166 ha
- 410 acres
- Land parcels
- 55
- registered freehold, median 7,619 m² (0.76 ha, 1.88 acres)
- Zoning
- —
- not in a zoned settlement
- Planning
- 2
- applications since 2010
Land parcels
Registered freehold land, Tailte Éireann
55 registered freehold parcels lie mostly in Derrynagun, from 30 m² to 185,446 m² (18.54 ha, 45.82 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 Derrynagun 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
13 Jul 2026N/a
1. demolition of the existing flat roof extension to the north east. 2. construction of a new dormer type extension to the north east 3. Single storey extension to the south east. The development will also include internal changes to the existing dwelling house and the reposition of the main entrance to the north western elevation and all associated site development works
Permission, 1 home · Offaly County Council, 2660371
13 Mar 2018Conditional
FOR THE CONVERSION OF ATTIC SPACE TO LIVING ACCOMODATION TO THE EXISTING DWELLING HOUSE AND B) PERMISSION FOR THE CONSTRUCTION OF A GRANNY FLAT TO THE SIDE AND REAR OF THE EXISTING DWELLING AND ALL ASSOCIATED SITE WORKS INCLUDING UPGRADE OF EXISTING SEPTIC TANK WITH A NEW SEPTIC TANK AND INTEGRATED CONSTRUCTED WETLANDS
Retention, 2 homes · Offaly County Council, 18115
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 Derrynagun.
Recorded monuments
No recorded monument lies in the townland of Derrynagun.
Architectural heritage
No building of the National Inventory of Architectural Heritage stands in the townland of Derrynagun.
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 Derrynagun, about 1 in 10 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, partly inferred.
- Terrain model
- LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_1778 (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 Derrynagun with five sales or more. The sales of the area are on the page of Co. Offaly.
The townland
- Name
- Derrynagun · Doire na gCon
- Area
- 1,660,326 m² (166.03 ha, 410.28 acres)
- Civil parish
- Lemanaghan, and its townlands
- Barony
- Garrycastle
- Electoral division
- Srah, the unit of the census
- Census 2022
- 721 people lived in 254 households in the Srah electoral division. 86% of households owned their home. 24% of homes were built since 2001. 7% of dwellings stood vacant on census night, and 0% were holiday homes.
- Neighbouring townlands
- Brackagh, Leabeg, Lemanaghan, Pollagh
- Placenames
- Derrynagun 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.