4 Watling Knoll Radlett Hertfordshire WD7 7HW
Approved on 29 June 2026
Council decision: Grant Permission4 conditions
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 space and single storey side extension with pitched roof over both, and insertion of 6x rooflights; alterations to fenestration.
- Received
- 13 April 2026
- Council
- Hertsmere Borough Council
- Ward
- Aldenham West
- Agent
- KG Plan & Design Ltd
- ReceivedReceived13 Apr
- ValidatedValidated23 Apr
- Consult.Consultation18 May
- TargetTarget Date18 Jun
- DecidedDecided29 Jun
Decided in 67 days (council typically 56)
About this application
This is a full planning application for a single storey side extension at 4 Watling Knoll Radlett Hertfordshire WD7 7HW. Hertsmere has handled 1,861 applications of this type. This one was decided in 77 days, 3 weeks longer than Hertsmere's typical decision time. There are no previous applications recorded 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.See what's approved near your address
Application details
- Postcode
- WD7 7HW
- Application type
- Householder Application
- Scale / size
- Small
- Parish
- Aldenham Parish
Planning application dates
- Date validated
- 23 April 2026
- Consultation expiry
- 18 May 2026
- Consultation start
- 27 April 2026
- Consultation end
- 18 May 2026
- Last date for comments
- 18 May 2026
- Target decision date
- 18 June 2026
Applicant and agent
- Applicant
- Private applicant
- Agent
- KG Plan & Design Ltd
- Architect profile
- KG PLAN AND DESIGN LTD
- Agent address
- 4 Herald Way Bricket Wood St Albans AL2 3FJ
Planning decision
- Case officer
- Marcus Truman
- Statutory period
- 56 days
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.
Source: Hertsmere
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Around this site
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For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Solid Renewables LimitedPlumber & Heating Engineer0.7 mi
- Blanco UKKitchen & Bathroom0.7 mi
- VaRa Garden DesignProfessional Garden Designer0.7 mi
- Noke Electrical Services LimitedElectrician0.8 mi
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