225 Darkes Lane Potters Bar Hertfordshire EN6 1BX
Approved on 1 April 2026
Council decision: Grant Lawful Certificate (Proposed Dev)Delegated (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
Conversion of garage to habitable room with window to replace garage door; conversion of loft to habitable room with rear dormer and insertion of 3x front rooflights; construction of two storey rear and single storey side extensions. Certificate of Lawful Development (Proposed).
- Received
- 5 February 2026
- Decision level
- Delegated (officer decision)
- Public comments
- 2
- Council
- Hertsmere Borough Council
- Ward
- Potters Bar Parkfield
- Agent
- Dimensions- Planning&Architecture
- ReceivedReceived5 Feb
- ValidatedValidated5 Feb
- Consult.Consultation
- TargetTarget Date2 Apr
- DecidedDecided1 Apr
Decided in 55 days (council typically 56)
About this application
This is an outline application for a dormer extension at 225 Darkes Lane Potters Bar Hertfordshire EN6 1BX. Hertsmere has handled 952 applications of this type. This one was decided in 55 days. The site is in 1 listed building nearby. There have been 9 other applications at this address. In the past year there have been 107 applications across Potters Bar Parkfield. We hold 3,353 applications in total for the EN6 postcode area.
81% of outline 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
Application details
- Postcode
- EN6 1BX
- Application type
- Certificate Proposed Lawful Use/Dev
- Scale / size
- Small
- Parish
- No Parish
Planning application dates
- Date validated
- 5 February 2026
- Neighbour consultation start
- 2 April 2026
- Target decision date
- 2 April 2026
- Decision issued
- 2 April 2026
- Permission expires
- 2 April 2029
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
Additional information
- Planning Portal ID
- PP-14641682
- Documents
- 7
- Constraints
- 7
Site constraints
Designations that overlap or adjoin the site outline.
- 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 (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.
Planning history at this site
9 other applications at this property, newest first.
- 202623 Jun
Construction of single storey rear extension to allow for subdivision of dwelling to create 3x flats…
ApprovedFull Planning Permission26/0866/FUL - 20267 Jan
Part single part two-storey rear extension, conversion of loft to habitable space to include insertion of 3x…
ApprovedFull Planning Permission26/0023/FUL - 202519 Nov
Part single, part two storey rear extension, single storey side extension, conversion of loft to habitable…
RefusedCertificate Proposed Lawful Use/Dev25/1660/CLP - 202520 Jun
Part single part two storey rear extension, conversion of loft to habitable space and 3x front/rear roof…
ApprovedFull Planning Permission25/0922/FUL - 20251 May
Single storey rear extension Depth: 6.00m, Height: 3.00m, Eaves: 3.00m.
ApprovedPD- Prior Approval 42 day (Hsehold ext)25/0673/PD42 - 20251 May
Conversion of loft to habitable space including rear dormer and 3x front roof lights. Certificate of lawful…
ApprovedCertificate Proposed Lawful Use/Dev25/0675/CLP - 202530 Apr
Part single, part two storey rear extension. Certificate of lawful development (Proposed).
ApprovedCertificate Proposed Lawful Use/Dev25/0661/CLP - 202529 Apr
Construction of single storey rear extension. Depth: 7.00m, Height: 3.00m, Eaves: 3.00m.
ApprovedPD- Prior Approval 42 day (Hsehold ext)25/0658/PD42 - 202529 Apr
Construction of single storey rear extension. Depth: 8.00m, Height: 3.00m, Eaves: 3.00m.
ApprovedPD- Prior Approval 42 day (Hsehold ext)25/0659/PD42
Source: Hertsmere
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Around this site
Nearby applications
- 225 Darkes Lane Potters Bar Hertfordshire EN6 1BX26/0023/FUL · FullApproved0.0 mi
- 225 Darkes Lane Potters Bar Hertfordshire EN6 1BX25/1660/CLP · OutlineRefused0.0 mi
- 225 Darkes Lane Potters Bar Hertfordshire EN6 1BX25/0659/PD42 · OutlineApproved0.0 mi
- 225 Darkes Lane Potters Bar Hertfordshire EN6 1BX25/0658/PD42 · OutlineApproved0.0 mi
- 225 Darkes Lane Potters Bar Hertfordshire EN6 1BX25/0673/PD42 · OutlineApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- AZ GlassWindow & Door Installer0.2 mi
- HM Electrical Contractors LimitedElectrician0.3 mi
- J.M.B D&B Ltd0.3 mi
- JS Electrical Contractors LtdElectrician0.3 mi
Planning something similar?
See what the council approved and refused for two-storey and first-floor extensions on your street. Pick your home and get the evidence before you pay for drawings.