Tonnagh

4 registered freehold parcels lie mostly in Tonnagh, from 849 m² to 134,477 m² (13.45 ha, 33.23 acres). The dashed line is the townland's boundary. 9 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 Tonnagh 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 Apr 2026Conditional

  retention of the existing single storey sports hall and associated site works at Tonnagh Rd., Rockcorry, Co. Monaghan

  Retention · Monaghan County Council, 2660140

• 6 Mar 2026N/a

  permission for the retention of a single storey temporary sports hall 450m2 and associated site works, proposed alterations to previously approved planning application, the external cladding colour is off white metal cladding

  Retention · Monaghan County Council, 2660071

• 6 Apr 2020Conditional

  Permission to erect a single storey temporary sports hall and associated site works

  Permission · Monaghan County Council, 20121

• 26 Nov 2019Conditional

  permission for development consisting of extensions to the existing production facilities, alterations to facades to include new signage, alterations to the existing internal layout, alterations of existing site layout to include reconfiguration of existing car parking spaces, provision of additional car parking spaces including associated site services, reconfiguration and widening of the existing site entrance, erection of new free standing signage, upgrade of existing septic tank to treatment system and polishing filter in accordance with EPA Guidelines and all associated site works

  Permission · Monaghan County Council, 19525

• 9 Aug 2019Conditional

  permission to demolish existing derelict buildings formerly used as Department of Defence living quarters and deconsecrated Church, demolished material from this building on site and re-use to fill in excavated and low level areas, re-contour the ground back to reflect the existing surrounding site topography and all associated site works. Significant further information relates to 19/370 and has been submitted

  Permission · Monaghan County Council, 19370

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 Tonnagh.

Recorded monuments

No recorded monument lies in the townland of Tonnagh.

Architectural heritage

• Tonnagh House, house, 1820–1825 · Regional interest
  Description

  Detached five-bay two-storey house, dated 1824, formerly in use as army barracks, and later as seminary. Now in use as outdoor education centre. Entrance elevation facing east, with full-height canted bay projection to garden (south) elevation, and full-height extension to west end of this block, connecting to former outbuildings forming north and west ranges of yard to rear of house. Lower two-storey multiple-bay extension to rear (north) elevation of south block, and single-bay single-storey flat-roof extension joining this to rear elevation of entrance block. Hipped slate roofs with projecting eaves having paired timber corbels, rendered chimneystacks, and some cast-iron rainwater goods. Painted lined-and-ruled rendered walls having textured render quoins to entrance elevation, smooth rendered walls to garden elevation, roughcast rendered walls to rear elevations, and painted plinth. Date stone to rear elevation of east block. Square-headed window openings, having moulded render surrounds, painted sills, and replacement uPVC windows to principle elevations. Square-headed window openings having mixed replacement uPVC and one-over-one pane timber sliding sash windows to rear elevations. One-over-one pane timber sliding sash windows to both east and west elevations of extension linking house to outbuildings. Square-headed bipartite three-over-six pane timber sliding sash window without horns to single-storey addition to rear of south block, square-headed timber-framed and steel-framed window, and round-headed leaded coloured glass window to rear elevation of south block. Round-arch open porch entrance, with recessed square-headed replacement timber door. Textured voussoirs and proud keystone to arch. Multiple-bay two-storey former outbuildings forming yard, having hipped slate roofs, rendered walls, square-headed openings with some steel-framed windows. Church to site dated 1962, having pitched partly copper clad roof, red brick walls with concrete buttresses, and lancet windows. Further recent buildings to site, recent gates and piers. Set back from road in extensive grounds.

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 Tonnagh, about 1 in 20 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

No LiDAR survey of the Office of Public Works covers the centre of the townland of Tonnagh.

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 Tonnagh with five sales or more. The sales of the area are on the page of Co. Monaghan.

Name

Tonnagh · An tEanach

Area

238,782 m² (23.88 ha, 59 acres)

Civil parish

Ematris, and its townlands

Barony

Dartree

Electoral division

Dawsongrove, the unit of the census

Census 2022

752 people lived in 261 households in the Dawsongrove electoral division. 74% of households owned their home. 31% of homes were built since 2001. 12% of dwellings stood vacant on census night, and 1% were holiday homes.

Neighbouring townlands

Dawson Grove Demesne, Dernamoyle, Drumgarkin, Dyan, Kilcrow

Placenames

Tonnagh 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.