100 Blanche Lane South Mimms Potters Bar Hertfordshire EN6 3PD
Approved on 14 August 2025
Council decision: Grant PermissionDelegated (officer decision)
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
Construction of single storey side extension.
- Received
- 20 June 2025
- Decision level
- Delegated (officer decision)
- Public comments
- 2
- Council
- Hertsmere Borough Council
- Ward
- Shenley
- ReceivedReceived20 Jun
- ValidatedValidated20 Jun
- Consult.Consultation17 Jul
- TargetTarget Date15 Aug
- DecidedDecided14 Aug
Decided in 55 days (council typically 56)
About this application
This is a full planning application for a single storey side extension at 100 Blanche Lane South Mimms Potters Bar Hertfordshire EN6 3PD. Hertsmere has handled 1,861 applications of this type. This one was decided in 55 days. The site is in the South Mimms conservation area, with 3 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 124 applications across Shenley. 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.See what's approved near your address
Application details
- Postcode
- EN6 3PD
- Application type
- Householder Application
- Scale / size
- Small
- Parish
- The Parish Council South Mimms And Ridge
Planning application dates
- Date validated
- 20 June 2025
- Consultation expiry
- 12 August 2025
- Consultation start
- 15 August 2025
- Consultation end
- 17 July 2025
- Neighbour consultation start
- 26 June 2025
- Neighbour consultation end
- 17 July 2025
- Last date for comments
- 12 August 2025
- Target decision date
- 15 August 2025
- Decision issued
- 15 August 2025
- Permission expires
- 15 August 2028
Applicant and agent
- Agent address
- 23 Galley Lane Arkley Barnet EN5 4AR
Planning decision
- Statutory period
- 56 days
Publicity
- Last advertised
- 9 July 2025
- Advertisement expiry
- 30 July 2025
- Site notice start
- 22 July 2025
- Site notice end
- 12 August 2025
Additional information
- Planning Portal ID
- PP-14117099
- Documents
- 14
- Constraints
- 8
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: South Mimms
- 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 (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.
Source: Hertsmere
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Around this site
Nearby applications
- 96 Blanche Lane South Mimms Hertfordshire EN6 3PD15/0926/TRC · TreesApproved0.0 mi
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For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Green Ohms Electrical Services ltdElectrician0.2 mi
- Delieu Electrical Services LtdElectrician0.3 mi
- Belectrix LtdElectrician0.3 mi
- Allprop Property Maintenance LtdBuildersBathrooms0.3 mi
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