Oak Villa Wash Lane South Mimms Potters Bar Hertfordshire EN6 3QA

25/1253/HSEHouseholder ApplicationRefused

Householder

Refused on 12 December 2025

Council decision: Refuse PermissionDelegated (officer decision)3 reasons 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

Retrospective application for the retention of front wall, gates, and railings.

Received: 28 August 2025
Decision level: Delegated (officer decision)
Public comments: 4
Council: Hertsmere Borough Council
Ward: Shenley
Agent: John Perrin & Sons Ltd

ReceivedReceived28 Aug
ValidatedValidated28 Aug
Consult.Consultation4 Nov
TargetTarget Date12 Dec
DecidedDecided12 Dec

Decided in 106 days (council typically 56)

About this application

This is a full planning application at Oak Villa Wash Lane South Mimms Potters Bar Hertfordshire EN6 3QA. Hertsmere has handled 1,861 applications of this type. This one was decided in 106 days, 7 weeks longer than Hertsmere's typical decision time. There have been 7 other applications at this address. In the past year there have been 124 applications across Shenley. We hold 3,350 applications in total for the EN6 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.See what's approved near your address

Why it was refused

The development, by virtue of its siting, scale and appearance, appears unduly dominant within the street scene and does not accord with the prevailing character of the street scene. By virtue of its prominent appearance, the development results in detrimental harm to the character and appearance of the street scene, and detracts from the landscape quality of the area. Therefore, the development conflicts with the NPPF 2024, policies SADM11 and SADM30 of the Site Allocations and Development Management Polices Plan (2016) and policy CS22 of Hertsmere's Core Strategy (2013).
The front wall, gates and railings are on land that is highway maintainable at public expense. The development therefore has the potential to interfere with the free and safe flow of highway users through the full obstruction of the highway verge, and therefore does not comply with the NPPF 2024, Policy CS25 of the Core Strategy and Policy SADM40 of the Site Allocation and Development Management Policies Plan 2016.
Part of the development lies within a high risk surface water flooding area as shown on the Environment Agency maps. The applicant has failed to demonstrate that the development does not result in an increase in the risk of flooding in the area due to the absence of a site specific flood risk assessment. The proposal is therefore contrary to the NPPF, CS16 of the Core Strategy 2013 and Policies SADM13, SADM14 and SADM15 of the Site Allocations and Development Management Policies Plan 2016.

From the council's decision notice.

Application details

Postcode: EN6 3QA
Application type: Householder Application
Scale / size: Medium
Parish: The Parish Council South Mimms And Ridge

Planning application dates

Date validated: 28 August 2025
Consultation expiry: 10 December 2025
Consultation start: 12 December 2025
Consultation end: 4 November 2025
Neighbour consultation start: 12 December 2025
Neighbour consultation end: 23 September 2025
Last date for comments: 10 December 2025
Target decision date: 12 December 2025

Applicant and agent

Agent: John Perrin & Sons Ltd
Agent address: 885 Green Lanes London N21 2QS

Planning decision

Statutory period: 106 days

Publicity

Last advertised: 26 November 2025
Advertisement expiry: 10 December 2025
Site notice end: 8 December 2025

Additional information

Planning Portal ID: PP-14276703
Documents: 12
Constraints: 11

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Green belt: Hertsmere
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

© 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.

Planning history at this site

9 other applications at this property, newest first.

Source: Hertsmere

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