Lagan

25 registered freehold parcels lie mostly in Lagan, from 2,250 m² (0.22 ha, 0.56 acres) to 116,560 m² (11.66 ha, 28.8 acres). The dashed line is the townland's boundary. 21 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 Lagan 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.

• 27 Aug 2025Conditional

  permission to erect a storage shed for machinery and cattle feed and exit on to public road by existing entrance and all associated works

  Permission · Monaghan County Council, 2568

• 26 Aug 2025Conditional

  permission to construct a slatted shed with underground storage tanks and attaching onto existing slatted shed and all associated site development works

  Permission · Monaghan County Council, 2560346

• 18 Jun 2025Refused

  permission for development consisting of a single-storey dwelling house, wastewater treatment system and sand polishing filter, use of existing entrance and laneway from public road; entrance piers together with all ancillary site development works

  Permission, 1 home · Monaghan County Council, 2560238

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 Lagan.

Recorded monuments

• MO024-026 Ringfort - rath
  Description

  Located on a shoulder towards the bottom of a N-facing slope. A circular embanked enclosure (ext. diam. c. 50m) is depicted only on the 1834 edition of the OS 6-inch map where it is described in gothic lettering as a ‘fort’. This is a slightly raised but uneven, circular and grass-covered area (diam. c. 23-25m) is defined by scarp (max. H 0.7m). The above description is derived from the published 'Archaeological Inventory of County Monaghan' (Dublin: Stationery Office, 1986). In certain instances the entries have been revised and updated in the light of recent research. Revised by: Michael Moore Date of revision: 9 May 2018

• MO024-027 Megalithic tomb - court tomb
  Description

  Located just off the crest of a S-facing slope. A roughly trapezoidal grass-covered mound (L 31m; Wth 11.5m) with some scrub is aligned NE-SW. A series of displaced flags at the NE end may represent the shallow court. Behind these are two subsidiary chambers opening to the NW and another opening to the SE. There are a number of set stones which appear to represent other chambers further SW, although no main gallery is evident. The surviving chambers are comparable to court-tomb subsidiary chambers. The above description is derived from the published 'Archaeological Inventory of County Monaghan' (Dublin: Stationery Office, 1986). In certain instances the entries have been revised and updated in the light of recent research. Revised by: Michael Moore Date of revision: 9 May 2018

Architectural heritage

• Scoil Náisiúnta Ultán Naomhtha, school, 1940–1945 · Regional interest
  Description

  Detached six-bay single-storey national school, dated 1941, with lower flat-roofed two-bay cloakroom block to either side, set back from front (south-east) elevation, and wrapping around rear elevation. Now disused and derelict. Hipped slate roof with red brick chimneystack and with timber bargeboards to flat-roofed section. Metal vent to ridge. Some cast-iron rainwater goods. Roughcast rendered walls, having red brick walls forming band at sill level. Inscribed limestone date plaque to front elevation reading 'Scoil Ultán Naomhtha/Lagán/Scoil Náisiúnta 1939', and further plaques to cloakroom blocks reading 'Buachaillí/Boys' and 'Cailíní/Girls'. Square-headed window openings with tooled stone sills throughout, having horizontal pane timber sliding sash windows, three-over-three pane to front of main block, one-over-one pane to rear elevation of cloakrooms, and two-over-two panes elsewhere. Timber pivoting windows at clerestory level of main block to rear elevation. Square-headed door openings, having half-glazed timber panelled doors and plain masonry surrounds. Remains of rendered boundary wall dividing yard to rear. Concrete play shelter to north-west side of yard, having flat roof, some cast-iron rainwater goods, concrete walls on three sides, and round-plan pier to open side. Set back from road, with site entrance to south-east, having remains of steel double-leaf gate, and recent farm gate. Rendered square-plan piers and rendered boundary walls.

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 Lagan, 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 moderately high, moderately low, low, partly inferred. Parts of the land are water.

Terrain model

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

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

Name

Lagan · An Lagán

Area

864,261 m² (86.43 ha, 213.56 acres)

Civil parish

Aghnamullen, and its townlands

Barony

Cremorne

Electoral division

Laragh, the unit of the census

Census 2022

576 people lived in 197 households in the Laragh electoral division. 91% of households owned their home. 25% of homes were built since 2001. 14% of dwellings stood vacant on census night, and 0% were holiday homes.

Neighbouring townlands

Annagleve, Binmore, Cargaghdoo, Coose, Drumgarra, Lattonfasky, Lurgangreen

Placenames

Lagan 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.