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Trinity Court Church Street Rickmansworth Hertfordshire WD3 1RT

26/0894/FULRefused

Refused on 17 August 2026

3 reasons for refusal

Site boundary (council red line)

Proposal

Construction of two additional storeys to existing two-storey car park building to form four-storey building (ground floor retained for parking and proposed commercial use (Class E) at floors 1, 2, and 3); construction of terrace balconies; new fenestration; associated works including new ramp and staircase; and landscaping alterations.

Received
1 June 2026
  1. Received1 Jun
  2. Validated23 Jun
  3. Consult.
  4. Target
  5. Decided17 Aug

Decided in 55 days

About this application

This is a planning application at Trinity Court Church Street Rickmansworth Hertfordshire WD3 1RT. Three Rivers has handled 4,297 applications of this type. This one was decided in 55 days. The site is in 1 listed building nearby. There have been 2 other applications at this address. We hold 2,814 applications in total for the WD3 postcode area.

Why it was refused

  1. The proposed development, by virtue of its scale, massing, and siting, would result in a harmfully prominent, incongruous and unsympathetic form of development, which would be at odds with the character and grain of development on this part of Church Street, Rickmansworth. The proposed development is therefore contrary to Policies CP1 and CP12 of the Core Strategy, the Batchworth Neighbourhood Plan (2025), and the NPPF (2024).
  2. The proposed development would not meet the de minimis exemption or any other exemption for Mandatory Biodiversity Net Gain. In the absence of any information, it has not been demonstrated that the proposal would secure a minimum 10% increase in biodiversity units compared to the pre- development baseline. The proposed development therefore would be contrary to Paragraph 13 of Schedule 7A of the Town and Country Planning Act 1990 and the Environment Act 2021.
  3. Having regard to the significant on-site parking shortfall and due to the uncertainly over the end users across the development, it has not been demonstrated that the sustainable transport modes to encourage travel to and from the site would be adequate or realistic options for future occupants and users. The proposal would therefore fail to adequately promote alternative sustainable transport options or enhance accessibility to and from the site, contrary to Policy CP10 of the Core Strategy (adopted October 2011), Policy DM13 and Appendix 5 of the Development Management Policies document (adopted July 2013), Policy BW CO7 of the Batchworth Neighbourhood Plan (2025) and the NPPF (2024).

From the council's decision notice.

Application details

Postcode
WD3 1RT

Planning application dates

Date validated
23 June 2026

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Green belt: Three RiversPart of the site
  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (21)

flood storage areas, conservation 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.

Source: Three Rivers

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