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Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

26/00817/FPHFull Permission HouseholderApproved
Householder

Approved on 4 June 2026

Council decision: Conditional Permission2 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

Insertion of front bay window following removal of existing garage doors to facilitate garage conversion into habitable accommodation. Front entrance porch and installation of side canopy. Insertion of rooflights to existing rear element roofslope. Alterations to fenestration. Erection of boundary wall/railings and installation of entrance gates.

Received
27 March 2026
Ward
Knebworth Ward
  1. Received27 Mar
  2. Validated27 Mar
  3. Consult.8 May
  4. Target22 May
  5. Decided4 Jun

Decided in 69 days (council typically 49)

About this application

This is a full planning application for a porch at Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS. North Hertfordshire has handled 2,848 applications of this type. This one was decided in 69 days, 3 weeks longer than North Hertfordshire's typical decision time. The site is in the Old Knebworth conservation area, with 1 listed building nearby. There have been 3 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 6FS
Application type
Full Permission Householder
Scale / size
Small
Parish
Knebworth Parish Council

Planning application dates

Date validated
27 March 2026
Consultation expiry
16 May 2026
Consultation end
8 May 2026
Last date for comments
16 May 2026
Target decision date
22 May 2026

Applicant and agent

Applicant
Private applicant
Agent
Mr Pamela Stokes
Architect profile
HERTFORDSHIRE ARCHITECTS LTD
Agent address
13 Cubitts Close Welwyn AL6 0DZ

Planning decision

Case officer
Tabitha Kaye
Statutory period
56 days

Publicity

Advertisement expiry
16 May 2026
Site notice end
15 May 2026

Additional information

Planning Portal ID
PP-14814865
Comments
0
Documents
10

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Old Knebworth
  • Green belt: North Hertfordshire
  • 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 (20)

flood storage areas, listed buildings, 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
    2 Sep

    External wall insulation and timber boarding added to east wall. Front door design updated, bi-fold doors…

    ApprovedNon-material amendmentAmendment26/02210/NMA
  2. 2026
    27 Mar

    Insertion of front bay window following removal of existing garage doors to facilitate garage conversion into…

    This applicationApprovedFull26/00817/FPH

Source: North Hertfordshire

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