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188 Mutton Lane Potters Bar Hertfordshire EN6 2AW

26/0536/HSEHouseholder ApplicationRefused
Householder

Refused on 16 June 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

Demolition of existing conservatory and single storey rear extension to facilitate construction of single storey rear extension. Conversion of garage to habitable space to include replacement garage door with window and conversion of loft to habitable space to include rear dormer.

Received
21 April 2026
Decision level
Delegated (officer decision)
Public comments
12
Ward
Bentley Heath & The Royds
Agent
Dimensions- Planning&Architecture
  1. Received21 Apr
  2. Validated21 Apr
  3. Consult.4 Jun
  4. Target16 Jun
  5. Decided16 Jun

Decided in 56 days (council typically 56)

About this application

This is a full planning application for demolition at 188 Mutton Lane Potters Bar Hertfordshire EN6 2AW. Hertsmere has handled 1,861 applications of this type. This one was decided in 56 days. There have been 2 other applications at this address. In the past year there have been 108 applications across Bentley Heath & The Royds. We hold 3,353 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.Planning something similar? See what gets approved on your street

Why it was refused

  1. The proposed development would significantly reduce the size of the private rear garden to a level below that normally expected under the Council's SPD guidance Parts E and D, thereby eroding the quality and usability of the host dwelling's private amenity space. This reduction in garden area, combined with the increased built form, would result in a significant loss of private amenity space for the occupiers of the host dwelling, to the detriment of their amenities. The proposal is therefore considered contrary to the aims of the NPPF (2024), Policies SP1 and CS22 of the Hertsmere Core Strategy (2013), Policy SADM3 and SADM30 of the Site Allocations and Development Management Policies Plan (2016), Part E of the Council's Planning and Design Guide SPD (2006) and Part D of the Council's Planning and Design Guide SPD (2013).

From the council's decision notice.

Application details

Postcode
EN6 2AW
Application type
Householder Application
Scale / size
Small
Parish
No Parish

Planning application dates

Date validated
21 April 2026
Consultation expiry
4 June 2026
Consultation start
17 June 2026
Consultation end
4 June 2026
Neighbour consultation start
17 June 2026
Neighbour consultation end
22 May 2026
Last date for comments
4 June 2026
Target decision date
16 June 2026

Applicant and agent

Agent
Dimensions- Planning&Architecture
Agent address
Unit 7 Hawthorn Business Park 165 Granville Road London NW2 2AZ

Planning decision

Statutory period
56 days

Appeal

Appeal reference
26/0028/APP
Appeal status
Appeal lodged

Additional information

Planning Portal ID
PP-14875503
Documents
10
Constraints
10

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 2: Medium probability (rivers and sea)Part of the site

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 (22)

flood storage areas, conservation 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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