31 Stevenage Road Knebworth Hertfordshire SG3 6NN
Approved on 10 March 2026
Council decision: Conditional PermissionDelegated (officer decision)2 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
Two storey side extension, single storey rear extension with lantern skylights, and installation of front porch canopy. Replacement pitched roof over existing attached garage. Alterations to fenestration and hardscaping works.
- Received
- 27 January 2026
- Decision level
- Delegated (officer decision)
- Ward
- Knebworth Ward
- ReceivedReceived27 Jan
- ValidatedValidated27 Jan
- Consult.Consultation1 Mar
- TargetTarget Date24 Mar
- DecidedDecided10 Mar
Decided in 42 days (council typically 49)
About this application
This is a full planning application for a single storey rear extension at 31 Stevenage Road Knebworth Hertfordshire SG3 6NN. North Hertfordshire has handled 2,848 applications of this type. This one was decided in 42 days, 7 days quicker than North Hertfordshire's typical decision time. The site is in 1 listed building nearby. There has been 1 other application 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.
92% of full 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 6NN
- Application type
- Full Permission Householder
- Scale / size
- Small
- Parish
- Knebworth Parish Council
Planning application dates
- Date validated
- 27 January 2026
- Consultation expiry
- 8 March 2026
- Consultation end
- 1 March 2026
- Neighbour consultation end
- 8 March 2026
- Last date for comments
- 8 March 2026
- Target decision date
- 24 March 2026
- Permission expires
- 10 March 2029
Applicant and agent
- Agent
- Mr Les Fenton
- Agent address
- 8 Reynards Rd Welwyn AL6 9TP
Planning decision
- Statutory period
- 56 days
Publicity
- Site notice end
- 8 March 2026
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
1 other application at this property, newest first.
Source: North Hertfordshire
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Around this site
Nearby applications
- 31 Stevenage Road Knebworth Hertfordshire SG3 6NN25/01250/FPH · FullApproved0.0 mi
- 35 Stevenage Road Knebworth Hertfordshire SG3 6NN24/02927/FPH · FullApproved0.0 mi
- 66 Stevenage Road Knebworth Hertfordshire SG3 6NN24/01478/NMA · AmendmentApproved0.0 mi
- 21A Deards End Lane Knebworth Hertfordshire SG3 6NL23/01423/FPH · FullApproved0.1 mi
- 21a Deards End Lane Knebworth Hertfordshire SG3 6NL24/01664/FPH · FullApproved0.1 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- DC Electrix LtdElectrician0.2 mi
- MH Goldsmith & Sons LtdElectrician0.4 mi
- Avelex Electrical LtdElectrician0.5 mi
- W Sack Electrics LtdElectrician0.6 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.