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27 Lytton Fields Knebworth Hertfordshire SG3 6BA

25/03244/FPHFull Permission HouseholderApproved
Householder

Approved on 12 February 2026

Council decision: Conditional PermissionDelegated (officer decision)2 conditions

Approximate site (title boundary)
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

Replacement raised roof including 2.no front dormer windows, 2.no front rooflights windows and 1.no rear dormer window. Single storey rear extension following removal of existing conservatory. Alterations to fenestration including insertion of garage door on front elevation

Received
2 January 2026
Decision level
Delegated (officer decision)
Ward
Knebworth Ward
  1. Received2 Jan
  2. Validated2 Jan
  3. Consult.4 Feb
  4. Target27 Feb
  5. Decided12 Feb

Decided in 41 days (council typically 49)

About this application

This is a full planning application for a single storey rear extension at 27 Lytton Fields Knebworth Hertfordshire SG3 6BA. North Hertfordshire has handled 2,848 applications of this type. This one was decided in 41 days, 8 days quicker than North Hertfordshire's typical decision time. There have been 2 other applications 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 6BA
Application type
Full Permission Householder
Scale / size
Small
Parish
Knebworth Parish Council

Planning application dates

Date validated
2 January 2026
Consultation expiry
11 February 2026
Consultation end
4 February 2026
Neighbour consultation end
11 February 2026
Last date for comments
11 February 2026
Target decision date
27 February 2026
Permission expires
12 February 2029

Applicant and agent

Agent
Mr Stuart Cook
Agent address
Rear Of 62 Bridge Road East Welwyn Garden City AL7 1JU United Kingdom

Planning decision

Case officer
Tom Rea
Statutory period
56 days

Publicity

Site notice end
11 February 2026

Additional information

Planning Portal ID
PP-14566902
Comments
0
Documents
8

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

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.

Associated applications

  1. 2026
    8 Jun

    No raising of roof required, flat roof dormers (as existing design), Juliette balconies to rear dormer…

    RefusedNon-material amendmentAmendment26/01483/NMA
  2. 2026
    2 Jan

    Replacement raised roof including 2.no front dormer windows, 2.no front rooflights windows and 1.no rear…

    This applicationApprovedFull25/03244/FPH

Source: North Hertfordshire

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