36 Hornbeam Spring Knebworth Hertfordshire SG3 6BE
Approved on 12 June 2025
Council decision: Prior Approval Not RequiredDelegated (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
Single storey rear extension with the following dimension: Length as measured from rear wall of original dwelling - 3.50 metres
- Received
- 7 May 2025
- Decision level
- Delegated (officer decision)
- Public comments
- 1
- Ward
- Knebworth Ward
- ReceivedReceived7 May
- ValidatedValidated7 May
- Consult.Consultation23 May
- TargetTarget Date17 Jun
- DecidedDecided12 Jun
Decided in 36 days (council typically 49)
About this application
This is an outline application for a single storey rear extension at 36 Hornbeam Spring Knebworth Hertfordshire SG3 6BE. North Hertfordshire has handled 456 applications of this type. This one was decided in 36 days, 13 days quicker than North Hertfordshire's typical decision time. There are no previous applications recorded at this address. In the past year there have been 90 applications across Knebworth Ward. We hold 149 applications in total for the SG3 postcode area.
86% of outline applications at North Hertfordshire District Council were approved. Across all application types, the council typically decides in about 7 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
- SG3 6BE
- Application type
- Neighbour Consultation Scheme
- Scale / size
- Small
- Parish
- Knebworth Parish Council
Planning application dates
- Date validated
- 7 May 2025
- Consultation expiry
- 7 June 2025
- Consultation end
- 23 May 2025
- Neighbour consultation end
- 7 June 2025
- Last date for comments
- 7 June 2025
- Target decision date
- 17 June 2025
Planning decision
- Case officer
- Kerry Andrews
- Statutory period
- 41 days
Additional information
- Planning Portal ID
- PP-13929717
- Documents
- 6
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: North Hertfordshire
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For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Robinz LtdElectrician0.1 mi
- Avelex Electrical LtdElectrician0.1 mi
- Barnett Technical ServicesElectrician0.1 mi
- MH Goldsmith & Sons LtdElectrician0.3 mi
Planning something similar?
See what the council approved and refused for single-storey rear extensions on your street. Pick your home and get the evidence before you pay for drawings.