Thomastown

43 registered freehold parcels lie mostly in Thomastown, from 322 m² to 145,330 m² (14.53 ha, 35.91 acres). The dashed line is the townland's boundary. 24 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 Thomastown 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.

• 9 Mar 2026Conditional

  Permission for the demolition of existing detached sheds and lean-to shed, single and two storey extension to existing single storey dwelling, alterations and additions to interior and exterior of existing dwelling, domestic garage, wastewater treatment system and storm water services, revised boundaries, driveway, boundary fencing and all associated site works

  Permission · Louth County Council, 2660120

• 28 Mar 2025Conditional

  Permission for development of a bungalow dwelling house, a domestic garage, a domestic wastewater treatment system, a new site entrance with all associated site development works.

  Permission, 2 homes · Louth County Council, 2540

• 20 Dec 2024Conditional

  Planning Permission for a proposed single storey extension to the side of existing dwelling house and all associated site works *Significant Further Information Received on 08/08/2025 - Retention of single storey extension to rear of existing dwelling and permission for a proposed single storey extension to the side of the existing dwelling house, new wastewater treatment system and all associated site works at Knockabbey, Thomastown, Co Louth, A91ET29*

  Permission, 1 home · Louth County Council, 2460811

• 7 Nov 2024Refused

  Permission for a bungalow dwelling house, a domestic garage, a domestic waste water treatment system, a new site entrance with all associated site development works

  Permission, 2 homes · Louth County Council, 24195

• 22 Sept 2021Conditional

  Permission for development that will consist of the demolition of a ruin dwelling and the construction of a new two-storey detached dwelling with a conservatory and detached garage and associated landscaping and site works including a new waste water treatment system and percolation area **Significant further information received on 17/05/2022**

  Permission, 2 homes · Louth County Council, 211181

• 24 Nov 2020Conditional

  Permission for a single storey extension to side and rear of existing dwelling along with all associated site works **Significant Further Information received 18/03/2021 allowing for a new waste water treatment system and percolation area**

  Permission, 1 home · Louth County Council, 20994

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 Thomastown.

Recorded monuments

• LH011-057 Souterrain
  Description

  The following description is derived from both the published 'Archaeological Inventory of County Louth' (Dublin: Stationery Office, 1986) and the 'Archaeological Survey of County Louth' (Dublin: Stationery Office, 1991). In certain instances the entries have been revised and updated in the light of recent research. Date of upload/revision: 17 July 2007 Situated on the summit of a large drumlin, called 'Tullaquillen'. The present entrance to the souterrain is at the junction of two passages which meet at right angles. Passage 1 (L 7.4m, Wth 0.8m, H 0.7m) extends SE-NW and is blocked by collapse at the SE. At the NW end of the passage a drop-hole gives access to a second passage (L 14m, Wth 1m, H 1.2m) also orientated SE-NW. This passage terminates in a gallery (L 4.5m, Wth 2.2m, H 2m) aligned E-W. At the present entrance a drop-hole gives access to an upper passage (L 3.2m, Wth 0.9m, H 1m) aligned NE-SW. At the SW end of the upper passage a drop hole gives access to a sub-rectangular chamber (L 4m, Wth 1.5m, H 1.5m) orientated NW-SE at the lower level. In the NE corner of the gallery, a drain at floor level extends to the N. The souterrain was partly flooded at the time of survey, and this drain can be seen as an attempt to combat this problem. (CLAJ 1979, 213-15)

• LH011-079 Enclosure
  Description

  The following description is derived from both the published 'Archaeological Inventory of County Louth' (Dublin: Stationery Office, 1986) and the 'Archaeological Survey of County Louth' (Dublin: Stationery Office, 1991). In certain instances the entries have been revised and updated in the light of recent research. Date of upload/revision: 17 July 2007 Cropmarks indicating sub-circular enclosure (max. dims. c. 40m NW-SE, c. 32m SW-NE) enclosed by two concentric ditches on aerial photograph (CUCAP, BDS 73).

• LH011-080 Castle - tower house
  Description

  This tower house has been modernised into a large house known as Knockabbey, dating to the Georgian period with later additions abutting at the W and S sides (Bence-Jones 1978, 178); it now has little of its original medieval features visible. It is three storeys high and has angle-towers which rise above the battlement level. The tops of the towers and the parapet walls have modern crenellations. The windows are later insertions, as is the large doorway in the centre of the N wall. It has projecting towers at the SE and NW angles. That at the SE projects eastwards by c. 2m and contained the original stairwell. The original entrance, now blocked, was in the E end of the S wall and led into an E-W barrel vault and to the stairwell which was to the E of the doorway. The interior is plastered so that no centring can be seen. The only original window that can be seen is a simple slit ope at ground level in the N wall. There is now no evidence of the garderobe which should have been located in the NW tower. (Dolan 1923, 179-80) The above description is derived from both the published 'Archaeological Inventory of County Louth' (Dublin: Stationery Office, 1986) and the 'Archaeological Survey of County Louth' (Dublin: Stationery Office, 1991). In certain instances the entries have been revised and updated in the light of recent research. Date of upload/revision: 17 July 2007

• LH011-081 Ecclesiastical site
  Description

  The following description is derived from both the published 'Archaeological Inventory of County Louth' (Dublin: Stationery Office, 1986) and the 'Archaeological Survey of County Louth' (Dublin: Stationery Office, 1991). In certain instances the entries have been revised and updated in the light of recent research. Date of upload/revision: 17 July 2007 Surviving as an oval flat-topped mound (max. dims. 25m N-S, 21m E-W) with many stones lying on surface. (CLAJ 1910, 291)

• LH011-147 Enclosure
  Description

  Located on a prominent rise in an undulating landscape. The cropmark of a circular area (diam. c. 25m) defined by a narrow fosse feature is visible on Google Earth (11/04/2010; 27/04/2011; 12/07/2013). The enclosure also overlooks Thomastown House, now called Knock Abbey, which incorporates a tower house but is a large Georgian mansion. The enclosure might be a tree-ring, and it is depicted as a cluster of trees on the 1835 and 1907 editions of the OS 6-inch map. It was first reported by Mathew Muller-Reynolds. See the attached enhanced aerial view Compiled by: Michael Moore Date of upload: 21 January 2020

• LH011-153 Enclosure
  Description

  Located on a W-facing slope. The faint cropmark of a circular enclosure (diam c. 30m N-S; c. 25m E-W) defined by a single fosse or drain is visible on Google Earth (12/07/2013). It was first reported by Jean Charles Caillerre. See the attached enhanced aerial view from Google Earth Compiled by: Michael Moore Date of upload: 3 June 2020

Architectural heritage

• Knock Abbey, gate lodge, 1844–1880 · Regional interest
  Description

  Detached two-bay single-storey over basement gate lodge, extant 1880, on a T-shaped plan with single-bay single-storey gabled projecting end bay; single-bay (south) or two-bay (north) single-storey side elevations. Pitched slate roof on a T-shaped plan with roll moulded clay ridge tiles, red brick Running bond chimney stacks on cut-limestone chamfered cushion courses on red brick Running bond bases having corbelled stepped capping supporting terracotta pots, timber bargeboards to gables, and cast-iron rainwater goods on red brick header bond "Cavetto" cornice retaining cast-iron downpipes. Red brick Flemish bond walls on cut-limestone plinth on repointed rubble stone base with margined tooled cut-limestone quoins to corners. Square-headed window openings with cut-limestone sills, and red brick voussoirs framing one-over-one timber sash windows. Set back from line of road at entrance to grounds of Knock Abbey with tooled limestone ashlar octagonal piers to perimeter having ivy-covered capping supporting replacement mild steel double gates.

• Knock Abbey, gate lodge, 1800–1817 · Regional interest
  Description

  Detached five-bay single-storey gate lodge, extant 1817, on a T-shaped plan originally three-bay single-storey on a rectangular plan centred on single-bay single-storey gabled projecting porch. Reconstructed, 1999, producing present composition. Replacement hipped artificial slate roof on a T-shaped plan centred on pitched (gabled) artificial slate roof (porch), ridge tiles, decorative timber bargeboards to gable (porch), and cast-iron rainwater goods timber eaves boards on exposed timber rafters with cast-iron downpipes. Replacement cement rendered walls. Pointed-arch central door opening with step threshold, and concealed dressings framing timber boarded half-door. Lancet window openings ("cheeks") with concrete sills, and concealed dressings framing timber casement windows. Pointed-arch flanking window openings with replacement concrete sills, and repointed dressings framing replacement timber casement windows. Square-headed window openings (end bays) with concrete sills, and concealed dressings framing six-over-six timber sash windows. Set in landscaped grounds shared with Knock Abbey.

• Knock Abbey, country house, 1750–1755 · Regional interest
  Description

  Attached six-bay three-storey country house, dated 1754, on a T-shaped plan with single-bay (single-bay deep) full-height central return (south); four-bay (two-bay deep) two-storey block (south-east) on a rectangular plan. Extended, 1858; 1863, producing present composition. Occupied, 1901; 1911. Burnt, 1923. Reconstructed, 1925. Sold, 1998. Restored, 2004. Pitched slate roof on a T-shaped plan behind parapet centred on pitched slate roof (south), clay ridge tiles, coping to gables with rendered chimney stacks to apexes having stepped capping supporting terracotta tapered pots, and concealed rainwater goods with cast-iron downpipes; flat roof not visible behind parapet (south-east) with concealed rainwater goods retaining cast-iron hoppers and square-profile downpipes. Replacement rendered walls with "Cavetto"-detailed ogee cornice below lead-covered dwarf parapet; part creeper-covered repointed rubble stone walls (south-east) with machicolation (west) or turret (east) framing battlemented parapets having coping. Square-headed window openings with cut-limestone sills, and concealed dressings framing nine-over-nine or three-over-six (top floor) timber sash windows without horns. Pointed-arch door opening (east) with threshold supporting cast-iron bootscrapers, timber doorcase with clustered colonettes on cut-limestone padstones supporting shallow cornice on rosette-detailed frieze, and moulded rendered surround having stepped reveals framing glazed timber panelled double doors having sidelights on panelled risers below fanlight. Pointed-arch off-central door opening (south-east) with repointed voussoirs framing glazed timber panelled double doors having sidelights on panelled risers below fanlight. Pointed-arch window openings with cut-limestone sills, and repointed voussoirs framing eight-over-eight timber sash windows centred on six-over-six timber sash windows having overlights. Set in landscaped 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 Thomastown, 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 low, low, partly inferred.

Terrain model

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

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 Thomastown with five sales or more. The sales of the area are on the page of Co. Louth.

Name

Thomastown · Baile Thomáis

Area

1,913,891 m² (191.39 ha, 472.93 acres)

Civil parish

Philipstown (Ardee Ra), and its townlands

Barony

Ardee

Electoral division

Tallanstown, the unit of the census

Census 2022

1,069 people lived in 382 households in the Tallanstown electoral division. 82% of households owned their home. 31% of homes were built since 2001. 5% of dwellings stood vacant on census night, and 0% were holiday homes.

Neighbouring townlands

Arthurstown, Feraghs, Nicholastown, Philipstown, Rathbody, Rathneestin, Tully

Placenames

Thomastown 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.