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26 The Grove Radlett Hertfordshire WD7 7NF

25/1751/HSEHouseholder ApplicationRefused
Householder

Refused on 2 February 2026

Council decision: Refuse PermissionDelegated (officer decision)1 reason for refusal

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

Part single part two storey side and rear extensions, first floor rear extension and erection of pool and outbuilding in rear garden.

Received
8 December 2025
Decision level
Delegated (officer decision)
Public comments
4
Ward
Aldenham West
Agent
Dusek Design Associates Ltd
  1. Received8 Dec
  2. Validated8 Dec
  3. Consult.31 Dec
  4. Target2 Feb
  5. Decided2 Feb

Decided in 56 days (council typically 56)

About this application

This is a full planning application for a rear extension at 26 The Grove Radlett Hertfordshire WD7 7NF. Hertsmere has handled 1,861 applications of this type. This one was decided in 56 days. The site is in the Radlett North conservation area. There have been 2 other applications at this address. In the past year there have been 152 applications across Aldenham West. We hold 1,025 applications in total for the WD7 postcode area.

90% of full applications at Hertsmere Borough Council 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

Why it was refused

  1. The proposed extensions and front hard surfacing, by virtue of their prominent siting, scale, massing, overall bulk and contrasting roof design, would be unduly large and dominating additions to the original dwelling, which would unduly subsume its original character, to the detriment of the conservation area. The proposal would, therefore, fail to improve or preserve the character and quality of the conservation area, which is contrary to the NPPF (2024), Policy CS14 & CS22 of the Hertsmere Core Strategy 2013, Policies SADM29 & SADM30 of the Site Allocations and Development Management Policies Plan 2016 and Hertsmere's Planning and Design Guide Part E 2006 and contrary to Section 72 of the Planning (Listed Buildings and Conservation Areas) Act 1990.

From the council's decision notice.

Application details

Postcode
WD7 7NF
Application type
Householder Application
Scale / size
Small
Parish
Aldenham Parish

Planning application dates

Date validated
8 December 2025
Consultation expiry
22 January 2026
Consultation start
3 February 2026
Consultation end
31 December 2025
Neighbour consultation start
11 December 2025
Neighbour consultation end
5 January 2026
Last date for comments
22 January 2026
Target decision date
2 February 2026

Applicant and agent

Agent
Dusek Design Associates Ltd
Agent address
Moor House Farm Estate Lower Road Higher Denham Uxbridge Middlesex UB9 5EN

Planning decision

Statutory period
56 days

Publicity

Last advertised
1 January 2026
Advertisement expiry
22 January 2026

Additional information

Planning Portal ID
PP-14543796
Documents
18
Constraints
11

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Radlett North
  • 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, listed buildings, green belt, 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: Hertsmere

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