Highdownhill
Townland in the civil parish of Newcastle, barony of Newcastle, Co. Dublin; in Irish An Cnoc Ard
- Area
- 62.1 ha
- 153 acres
- Land parcels
- 62
- registered freehold, median 1,799 m²
- Zoning
- P1
- RU
- Planning
- 23
- applications since 2010
Land parcels
Registered freehold land, Tailte Éireann
62 registered freehold parcels lie mostly in Highdownhill, from 11 m² to 136,320 m² (13.63 ha, 33.69 acres). The dashed line is the townland's boundary; 25 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
- P1RU (Agriculture)
South Dublin County Development Plan 2022-2028, South Dublin · 70 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
27 May 2026Grant permission & grant retention
Permission for a dormer roof extension over existing one storey house, with a dormer extension to the side and rear of the existing one storey house. Retention permission for a one storey detached domestic garage to the rear of the existing dwelling as constructed and all associated siteworks.
Permission and retention · South Dublin County Council, SD26B/0259W
2 Mar 2026Grant permission
The development will consist of the construction of a part one-storey and part two-storey, four-bedroom dwelling house (235m2); construction of a car garage (32m2); and all associated landscaping and site works.
Permission, 1 home · South Dublin County Council, SD26A/0055W
27 Aug 2025Refuse permission
The development will consist of the construction of a part one-storey and part two-storey, four-bedroom dwelling house (254m2); construction of a car garage (32m2); and all associated landscaping and site works
Permission · South Dublin County Council, SD25A/0199W
21 Apr 2022Grant permission
Construction of a new domestic shed including all associated site works.
Permission · South Dublin County Council, SD22B/0055
20 Sept 2021Grant permission
Modifications to existing domestic shed; raising roof to provide additional first floor head height; revised internal layout to provide for home office, gym, tool store and wc; new window and door arrangement to front and side elevations; connection to existing on site services and all associated development works.
Permission · South Dublin County Council, SD21B/0495
26 Jun 2019Grant permission
Construction of a detached single storey garage to the side of the dwelling along with all associated site and sewerage works.
Permission · South Dublin County Council, SD19B/0257
24 Jan 2019Refuse permission
Agricultural buildings for storage of straw and grain; weighbridge; office; concrete apron; all associated site development works.
Permission · South Dublin County Council, SD19A/0021
13 Mar 2018Refuse permission
To construct a dwelling house together with a waste water treatment system and associated soil polishing filter, upgrade of existing access, site development works and services.
Permission, 1 home · South Dublin County Council, SD18A/0083
31 May 2016Grant permission for retention
Retention of a single storey detached garage to rear of existing dwelling , also retention permission sought for 2 chimneys to main dwelling, and retention sought for 2 windows to western elevation.
Retention · South Dublin County Council, SD16B/0172
30 Sept 2014Grant extension of duration of permission
A 90 sq.m ground floor family flat and a 56sq.m first floor dormer extension to side and relocation of septic tank in side garden.
Extension of duration of permission · South Dublin County Council, SD09B/0130/EP
1 Jul 2011Grant permission & grant retention
Retention of existing detached single storey garage to rear of existing dwelling which has been increased in size from original garage, toilet within garage and the use of garage for occassional recreational use. Permission for single storey extension to rear of dwelling with proposed new dormer windows to front of dwelling to attic space.
Permission and retention · South Dublin County Council, SD11B/0164
16 Feb 2011Refuse permission
4 new dormer windows and glazed unit over porch to front of dwelling; convert attic and incorporate new two storey extension to rear.
Permission · South Dublin County Council, SD11B/0041
11 Nov 2009Grant permission
A 90 sq.m ground floor family flat and a 56sq.m. first floor dormer extension to side and relocation of septic tank in side garden.
Permission, 1 home · South Dublin County Council, SD09B/0130
13 Jul 2009Grant permission
Single storey detached garage to side of existing dormer dwelling and associated site works.
Permission · South Dublin County Council, SD09B/0281
14 May 2007Grant permission
New vehicular entrance and driveway on north site boundary to replace existing vehicular entrance and driveway on east site boundary, serving existing bungalow.
Permission · South Dublin County Council, SD07B/0421
13 Feb 2006Grant permission
Demolish single storey rear extension and detached garage behind existing house, construct new single storey side and rear extension.
Permission · South Dublin County Council, SD05B/0747
23 Mar 2005Grant permission
Erection of a domestic garage. File Ref No. P2358/78.
Permission · South Dublin County Council, SD05B/0194
30 Jan 2004Grant permission
Dormer bungalow and septic tank.
Permission, 1 home · South Dublin County Council, SD03A/0825
9 Jan 2004Grant permission
Three bedroom dormer bungalow and double garage with wastewater treatment system and new entrance and associated site works.
Permission, 1 home · South Dublin County Council, SD03A/0766
19 Dec 2002Grant permission
Bungalow, septic tanks and Puraflo liquid effluent treatment system.
Permission, 1 home · South Dublin County Council, SD02A/0585
17 Dec 2002Grant permission
Bungalow, bio-filter treatment unit, entrance and ancillary site works.
Permission, 1 home · South Dublin County Council, SD02A/0527
25 Apr 2000Grant permission
Bedrooms and shower room extension to bungalow.
Permission · South Dublin County Council, S00B/0271
22 Jul 1999Refuse permission
New bungalow, septic tank and temporary access through Stramorne
Permission · South Dublin County Council, S99A/0495
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 Highdownhill.
Recorded monuments
- DU020-006 Barrow - unclassified
Description
Located on the N face of Athgoe Hill in an area indicated as a copse on the 1837 OS 6-inch map. A sub-circular area (diam. c. 46m) defined by a fosse (Wth 2.8m; D 0.9m) and an outer flat-topped bank in the NW and W (Wth 4m at base; 1.2m at top; H 0.6m) and by bushes in the E and SE. The interior of the site is planted with trees (Stout 1998, 151-2). Compiled by Geraldine Stout
Architectural heritage
No building of the National Inventory of Architectural Heritage stands in the townland of Highdownhill.
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 5 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
- LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_2941 (ZIP).
- 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 Highdownhill with five sales or more. The sales of the area are on the page of Co. Dublin.
The townland
- Name
- Highdownhill · An Cnoc Ard
- Area
- 620,847 m² (62.08 ha, 153.41 acres)
- Civil parish
- Newcastle, and its townlands
- Barony
- Newcastle
- Electoral division
- Newcastle, the unit of the census
- Census 2022
- Newcastle electoral division: 5,552 people in 1,814 households; 75% of households own their home; 66% of homes were built since 2001; 5% of dwellings stood vacant on census night, and 0% were holiday homes.
- Neighbouring townlands
- Athgoe, Athgoe North, Ballynakelly, Keatingspark, Newcastle South, Rathcreedan
- Placenames
- Highdownhill 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.