Skip to content

Colne Valley Viaduct, Wetlands Ecological Mitigation Site Harvil Road Harefield

73263/APP/2026/251FullApproved

Approved on 9 April 2026

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Request for approval of Plans and Specifications for works within the Colne Valley Viaduct Groundworks South Area 1, on land south of Moorhall Road, on the east side of Savay Lake, in accordance with Paragraph 3 of Schedule 17 to the High Speed Rail (London - West Midlands) Act 2017.

Received
29 January 2026
Ward
ICK/HAM & S HF/D 22
  1. Received29 Jan
  2. Validated29 Jan
  3. Consult.
  4. Target10 Apr
  5. Decided9 Apr

Decided in 70 days (council typically 56)

About this application

This is a full planning application at COLNE VALLEY VIADUCT, WETLANDS ECOLOGICAL MITIGATION SITE HARVIL ROAD HAREFIELD. Hillingdon has handled 4,983 applications of this type. This one was decided in 70 days, 2 weeks longer than Hillingdon's typical decision time. There have been 3 other applications at this address. In the past year there have been 181 applications across ICK/HAM & S HF/D 22.

87% of full applications at London Borough of Hillingdon were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Application type
Full
Scale / size
Medium

Planning application dates

Date validated
29 January 2026
Target decision date
10 April 2026

Applicant and agent

Agent address
Mr Ben Hampson South Portal Chalfont Lane Maple Cross WD3 9XN

Planning decision

Statutory period
71 days

Additional information

Documents
9

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 3: High probability (rivers and sea)Part of the site
  • Conservation area: Widewater LockPart of the site
  • Article 4 direction: Residential extensions
  • Green belt: Hillingdon

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (20)

flood storage areas, listed buildings, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Associated applications

  1. 2026
    29 Jan

    Request for agreement of a Site Restoration Scheme on land parcels to the south of Moorhall Road, in…

    ApprovedFullFiled alongside73263/APP/2026/250
  2. 2026
    29 Jan

    Request for approval of Plans and Specifications for works within the Colne Valley Viaduct Groundworks South…

    This applicationApprovedFull73263/APP/2026/251

Source: Hillingdon

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

Track this application

Get email alerts when there is a planning decision or status change.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

Planning something similar?

See what the council approved and refused on your street for the project you have in mind. Pick your home and get the evidence before you pay for drawings.

See what gets approved on your streetBuying this property? Report on this address