Knocksedan
Townland in the civil parish of Swords, barony of Nethercross, Co. Dublin; in Irish Cnoc Siáin
- Area
- 39.5 ha
- 98 acres
- Land parcels
- 18
- registered freehold, median 4,418 m² (0.44 ha, 1.09 acres)
- Zoning
- G3
- GB - Green Belt
- Planning
- 11
- applications since 2010
Land parcels
Registered freehold land, Tailte Éireann
18 registered freehold parcels lie mostly in Knocksedan, from 73 m² to 185,822 m² (18.58 ha, 45.92 acres). The dashed line is the townland's boundary; 5 neighbouring parcels touch it.
Download the townland: DXF, in Irish Transverse Mercator metres, with its boundary, parcels and buildings; GeoJSON or KML.
Zoning
Development plans, national zoning
- G3GB - Green Belt (Conservation, amenity or buffer space, corridor/belt, landscape)
The Fingal Development Plan 2023 – 2029, Fingal · 20 parcels The zoning objective in the plan - G3HA - High Amenity (Conservation, amenity or buffer space, corridor/belt, landscape)
The Fingal Development Plan 2023 – 2029, Fingal · 2 parcels The zoning objective in the plan
Source: Tailte Éireann and the Department of Housing (MyPlan), national zoning, CC BY 4.0.
Planning applications
Sites that touch the townland, newest first
11 Aug 2026Referral
Retention planning permission required for: (i) the change of use of a
Permission and retention · Fingal County Council, F26A/0717E
12 Mar 2026Grant permission
Installation of horticultural polytunnels and associated site works at
Permission · Fingal County Council, F26A/0179E
3 Mar 2026Invalid application
Installation of Horticultural Polytunnels and associated site works at
Permission · Fingal County Council, F26A/0151E
21 Nov 2025Refuse permission & refuse retention
Retention planning permission required for: (i) the change of use of 2
Permission and retention · Fingal County Council, F25A/1087E
12 Aug 2025Refuse permission for retention
Retention planning permission required for: (i) the change of use of 2
Retention · Fingal County Council, F25A/0728E
23 Jun 2022Refuse permission & refuse retention
The retention of the existing storage building, offices, staff welfare
Permission and retention · Fingal County Council, F22A/0317
27 Oct 2017Grant permission
Permission for the change of use of 3 no. existing helicopter storage
Permission · Fingal County Council, F17A/0400
19 Oct 2012Grant permission for retention
Retention permission for 18m monopole, carrying associated antennae an
Retention · Fingal County Council, F12A/0326
10 Sept 2012Invalid application due to site notice
Retention permission for 18m monopole, carrying associated antennae an
Retention · Fingal County Council, F12A/0283
16 Jul 2012Invalid application due to site notice
Retention permission for 18m monopole, carrying associated antennae an
Retention · Fingal County Council, F12A/0220
8 Sept 2011Grant permission
Demolition of an existing single storey dwelling and the construction
Permission · Fingal County Council, F11A/0208
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 Knocksedan.
Recorded monuments
- DU011-029 Mound
Description
Situated in the paddock of a cottage behind Knocksedan House. The mound is on the edge of a quarried area, which falls away N to the Ward River. It is a round-topped mound (dims.20.8m E-W; 20m W-S; H 1.4m). There is a local tradition that it contained burials. Ware in his Antiquities of Ireland recorded that ‘numbers of human bones are now to be seen lying promiscuously in this mound which was opened for gravel some years ago....about two years ago a human skeleton of monstrous size which measured from ankle to bone to the top of the cranium 8 foot 4 inches. The position of the head was from north to south and all the bones except the teeth were in a crumbling and decayed condition’. Compiled by: Geraldine Stout Updated by: Christine Baker Date of upload: 03 January 2015
Architectural heritage
- Knocksedan House, house, 1750–1770 · Regional interest
Description
Detached three-bay three-storey house, c.1760, retaining original fenestration and block and start stone doorcase. Rear extension and coach house to north.ROOF: Hidden behind parapet wall. Hipped roof and rough-cast rendered chimney stacks. WALLS: Rough-cast rendered walls with high parapet wall, granite coping and urns. OPENINGS: Square headed with patent reveals, granite cills, 6/6 and 3/3 timber sash windows block and start stone doorcase, fluted console brackets, broken bedded pediment and raised and fielded door.
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
- About 1 in 20 homes in this area is likely to have high radon levels. Testing a home
- Landslides
- Susceptibility moderately high, moderately low, low, low (inferred), on the 1:50,000 map.
- Terrain model
- No LiDAR survey of the Office of Public Works covers the centre of the townland of Knocksedan.
- Flooding
- The flood maps of the Office of Public Works: floodinfo.ie.
Radon Risk Map of Ireland, Environmental Protection Agency; Landslide Susceptibility Classification, Geological Survey Ireland; both 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 Knocksedan with five sales or more. The sales of the area are on the page of Co. Dublin.
The townland
- Name
- Knocksedan · Cnoc Siáin
- Area
- 395,493 m² (39.55 ha, 97.73 acres)
- Civil parish
- Swords, and its townlands
- Barony
- Nethercross
- Electoral division
- Swords-Forrest, the unit of the census
- Census 2022
- Swords-Forrest electoral division: 15,926 people in 5,334 households; 75% of households own their home; 47% of homes were built since 2001; 3% of dwellings stood vacant on census night, and 0% were holiday homes.
- Neighbouring townlands
- Brackenstown, Brazil, Forrest Great, Killeek
- Placenames
- Knocksedan 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.