Williamstown
Townland in the civil parish of Booterstown, barony of Rathdown, Co. Dublin; in Irish Baile Liam
Parcel 4891631
- Area
- 4,084 m² (0.41 ha, 1.01 acres)
- Buildings
- 2 buildings touch it, 340 m² on the ground
- Zoning
- S5 Objective SNI (COUNTY DEVELOPMENT PLAN 2022-2028) The objective
R2 Objective A (COUNTY DEVELOPMENT PLAN 2022-2028) The objective - Townland
- Williamstown
Planning applications on this parcel
11 Nov 2025Refuse permission
An addition of a second floor/attic conversion, to include a pitched slate roof
Permission · Dun Laoghaire Rathdown County Council, D25B/0631/WEB
30 May 2025Grant permission
Single storey extensions and alterations to the rear of an existing two
Permission · Dun Laoghaire Rathdown County Council, D25B/0305
29 Apr 2024Grant permission
The development will consist of the demolition of the external dining area to th
Permission · Dun Laoghaire Rathdown County Council, D24A/0289/WEB
26 Apr 2024Declare application invalid
The development will consist of the demolition of the external dining area to th
Permission · Dun Laoghaire Rathdown County Council, D24A/0280/WEB
25 Apr 2024Declare application invalid
The development will consist of the demolition of the external dining area to th
Permission · Dun Laoghaire Rathdown County Council, D24A/0276/WEB
23 Oct 2020Grant permission
Permission for development consisting of
Permission · Dun Laoghaire Rathdown County Council, D20A/0775
25 Oct 2019Grant permission
Permission for the upgrading and reorientation of the existing natural grass
Permission · Dun Laoghaire Rathdown County Council, D19A/0824
16 Nov 2017Grant permission for retention
Permission for Retention of the following amendments to the permission granted
Permission for retention · Dun Laoghaire Rathdown County Council, D17A/1005
15 Sept 2016Grant permission
Permission for the removal of the timber shed to the east, removal of
Permission · Dun Laoghaire Rathdown County Council, D16A/0679
26 Mar 2015Grant permission
Permission for developmentat this site. The development will consist of the dem
Permission · Dun Laoghaire Rathdown County Council, D15A/0203
28 Jan 2015Grant permission
Permission for construction of a detached two-storey dwelling house and
Permission · Dun Laoghaire Rathdown County Council, D15A/0039
15 Jun 2012Grant permission
Permission is sought for demolition of existing detached boiler house, new detac
Permission · Dun Laoghaire Rathdown County Council, D12A/0229
15 Jun 2012Grant permission
Permission is sought for a partial infil of an existing balcony terrace to enlar
Permission · Dun Laoghaire Rathdown County Council, D12B/0201
8 Apr 2011Grant permission for retention
Retention of development permission is sought for the following:
Permission for retention · Dun Laoghaire Rathdown County Council, D11B/0124
27 Aug 2009Grant permission
Permission is sought for the construction of a two storey extension
Permission · Dun Laoghaire Rathdown County Council, D09B/0371
9 May 2008Grant permission for retention
The construction of a garden room at lower ground floor level, a breakfast room,
Permission for retention · Dun Laoghaire Rathdown County Council, D08A/0536
17 May 2007Grant permission
demolition of existing two storey classroom buildings and their replacement with
Permission · Dun Laoghaire Rathdown County Council, D07A/0674
8 Nov 2006Grant permission
For the alteration to the steps at the front entrance to Castledawson House
Permission · Dun Laoghaire Rathdown County Council, D06A/1610
15 Feb 2006Grant permission
Material alteration to the existing permission for a new senior school
Permission · Dun Laoghaire Rathdown County Council, D06A/0198
7 Jul 2005Grant permission
Three dormer windows on the south elevation of the existing dwelling.
Permission · Dun Laoghaire Rathdown County Council, D05B/0529
13 Apr 2005Grant permission
The entrance is to facilitate vehicular access for purpose of constructing a new
Permission · Dun Laoghaire Rathdown County Council, D05A/0463
7 Jul 2004Grant permission
For extensions to existing bedrooms at attic floor level and alterations
Permission · Dun Laoghaire Rathdown County Council, D04B/0538
4 Mar 2004Grant permission
Extension to the existing living room at ground floor level, the provision of an
Permission · Dun Laoghaire Rathdown County Council, D04B/0156
11 Aug 2003Grant permission
Extension to existing self contained flat to provide new
Permission · Dun Laoghaire Rathdown County Council, D03B/0608
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 this parcel.
Recorded monuments around it
No zone of notification of a recorded monument touches this parcel.
Architectural heritage
No building of the National Inventory of Architectural Heritage stands on this parcel.
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
- About 1 in 20 homes in this area is likely to have high radon levels. Testing a home
- Landslides
- Susceptibility low, on the 1:50,000 map.
- Terrain model
- LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_3283 (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.
Download this parcel: DXF, in Irish Transverse Mercator metres, with its neighbours and buildings, for a drawing program; GeoJSON, in WGS 84, for a map; KML, for Google Earth.
Registered freehold land, Tailte Éireann, CC BY 4.0. A parcel is the land of a title, not an address. The owner's name is in the Land Registry of Tailte Éireann: a copy of the folio can be ordered on landdirect.ie, for a fee.
- Area
- 45.5 ha
- 113 acres
- Land parcels
- 47
- registered freehold, median 543 m²
- Zoning
- R2
- Objective A
- Planning
- 100
- applications since 2010
Land parcels
Registered freehold land, Tailte Éireann
47 registered freehold parcels lie mostly in Williamstown, from 13 m² to 10,335 m² (1.03 ha, 2.55 acres). The dashed line is the townland's boundary; 0 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
- R2Objective A (Existing residential)
COUNTY DEVELOPMENT PLAN 2022-2028, Dun Laoghaire-Rathdown · 35 parcels The zoning objective in the plan - S5Objective SNI (Mixed/general community services/facilities uses)
COUNTY DEVELOPMENT PLAN 2022-2028, Dun Laoghaire-Rathdown · 5 parcels The zoning objective in the plan - M3Objective NC (District, neighbourhood centre)
COUNTY DEVELOPMENT PLAN 2022-2028, Dun Laoghaire-Rathdown · 5 parcels The zoning objective in the plan - G1Objective F (Open space, park)
COUNTY DEVELOPMENT PLAN 2022-2028, Dun Laoghaire-Rathdown · 0 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
17 Aug 2026S5 dec exempt
The proposed works comprise of the temporary removal of 1 no. gate pier and gate
Section 5 · Dun Laoghaire Rathdown County Council, REF12326
6 Aug 2026Assessment period
The proposed development consists of a single-storey garden room extension at gr
Permission · Dun Laoghaire Rathdown County Council, D26A/0591/WEB
29 Jul 2026Declare application invalid
A single-storey garden room extension at ground floor level to the rear of No. 5
Permission · Dun Laoghaire Rathdown County Council, D26A/0572/WEB
17 Jul 2026Grant permission
-Construction of new single storey extension to the side at first floor level.
Permission · Dun Laoghaire Rathdown County Council, D26B/0414/WEB
3 Jul 2026Grant permission
Development consisting of ancillary works to park lodge (a protected st
Permission · Dun Laoghaire Rathdown County Council, D26A/0505/WEB
22 May 2026Registered application
73 mobility hub sites across the Council's administrative area
Part vlll (public consultation) · Dun Laoghaire Rathdown County Council, PC/IC/01/26
1 May 2026Clarification of further information
Planning permission for development at this site of c.1.1 ha at “St Catherine’s”
Permission · Dun Laoghaire Rathdown County Council, D26A/0334/WEB
21 Apr 2026Grant permission
The development will consist of: 1. Formation of a car port to the end of the re
Permission · Dun Laoghaire Rathdown County Council, D26A/0302/WEB
13 Apr 2026Grant certificate of exemption
2
Certificate of exemption - part v · Dun Laoghaire Rathdown County Council, V/030/26
7 Apr 2026Refuse permission
(i) construction of 2 no. three-storey, four-bedroom detached dwellings to the
Permission · Dun Laoghaire Rathdown County Council, D26A/0269/WEB
4 Mar 2026Grant permission
Permission is sought for the construction of a 1615m2 multi-sport enclosure for
Permission · Dun Laoghaire Rathdown County Council, D26A/0164/WEB
27 Feb 2026S5 dec exempt
No work required This Section 5 Declaration relates only to change of use from R
Section 5 · Dun Laoghaire Rathdown County Council, REF2426
27 Feb 2026Grant permission
A) Removal of non-original internal partitions, reconfiguration of the internal
Permission · Dun Laoghaire Rathdown County Council, D26A/0146/WEB
5 Dec 2025Grant permission & refuse permission
Planning permission and temporary planning permission for development at this si
Permission · Dun Laoghaire Rathdown County Council, D25A/0939/WEB
11 Nov 2025Refuse permission
An addition of a second floor/attic conversion, to include a pitched slate roof
Permission · Dun Laoghaire Rathdown County Council, D25B/0631/WEB
15 Oct 2025Grant permission
The application seeks permission for the construction of an additional c. 554 sq
Permission · Dun Laoghaire Rathdown County Council, D25A/0784/WEB
8 Oct 2025Grant permission
The development consists of the demolition of existing garage to side, and the
Permission · Dun Laoghaire Rathdown County Council, D25B/0572/WEB
6 Oct 2025Grant permission
The development will consist of the following: Removal of an existing storage sh
Permission · Dun Laoghaire Rathdown County Council, D25B/0567/WEB
14 Aug 2025Grant permission
(i) The demolition of 2 existing shed structures with a total combined area of 5
Permission (lrd) · Dun Laoghaire Rathdown County Council, LRD25A/0637/WEB
11 Aug 2025Declare application invalid
The development will consist of: (i) the demolition of 2 existing shed structu
Permission (lrd) · Dun Laoghaire Rathdown County Council, LRD25A/0624/WEB
30 May 2025Grant permission
Single storey extensions and alterations to the rear of an existing two
Permission · Dun Laoghaire Rathdown County Council, D25B/0305
2 May 2025Grant permission
The development will consist of: The construction of a 797m2 new swimming pool f
Permission · Dun Laoghaire Rathdown County Council, D25A/0355/WEB
25 Mar 2025S5 dec exempt
The proposed works consist of 1no. new external ramp and a new 100 sq.m. Soft P
Section 5 · Dun Laoghaire Rathdown County Council, REF5025
7 Mar 2025Grant permission
Permission is sought for (A) The removal of the existing two-storey return (part
Permission · Dun Laoghaire Rathdown County Council, D25A/0181
4 Mar 2025Grant permission
The development will consist of the demolition of an existing garage to the rear
Permission · Dun Laoghaire Rathdown County Council, D25A/0168/WEB
The 25 most recent of over 100 applications.
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 Williamstown.
Recorded monuments
- DU023-004 Castle - tower house
Description
Situated on the present site of a late 18th century house at the junction of Pembroke Cottages and Booterstown Avenue near Booterstown marsh. Named on the OS 1843 edition as 'Booterstown Cas'. Booterstown Castle was built in the first half of the 15thcentury by the Fitzwilliam family on the site of acastle. According to the Patent Rolls (13 Hen VI) Philip Fitzwilliam petitioned the king to provide funds to fortify a castle which had been destroyed in the beginning of the 15th-century (Ball 1900, 310). In the early 17th century it was held by Sir William Ryves, Attorney General and in 1619 after the Restoration the castle was occupied by a family called Reyly. Vaults belonging to the 15th century, are said to have been incorporated into a house that occupies the site. No visible surface trace. Compiled by: Geraldine Stout and Padraig Clancy Revised upload on: 28 July 2018
Architectural heritage
No building of the National Inventory of Architectural Heritage stands in the townland of Williamstown.
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 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_3283 (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 Williamstown with five sales or more. The sales of the area are on the page of Co. Dublin.
The townland
- Name
- Williamstown · Baile Liam
- Area
- 455,364 m² (45.54 ha, 112.52 acres)
- Civil parish
- Booterstown, and its townlands
- Barony
- Rathdown
- Electoral division
- Blackrock-Williamstown, the unit of the census
- Census 2022
- Blackrock-Williamstown electoral division: 2,876 people in 1,060 households; 59% of households own their home; 13% of homes were built since 2001; 7% of dwellings stood vacant on census night, and 2% were holiday homes.
- Neighbouring townlands
- Blackrock, Booterstown, Intake, Merrion
- Placenames
- Williamstown 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.