Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

This site has had 4 applications since 2026: 3 approved, 0 refused.

• 26/02332/TCA Granted

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  R1: Robinia - Remove.

  Decided 16 Oct 2026 Trees
• 26/00817/FPH Granted

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  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.

  Decided 3 Jun 2026 Householder
• 26/00424/FPH Granted

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  Erection of four bay cartlodge with habitable accommodation at first floor and external staircase following demolition of existing stables and store.

  Decided 28 Apr 2026 Householder

1. 2 Sep 2026

   Received by North Hertfordshire

2. 10 Sep 2026

   Added to PlanIndex

3. 29 Sep 2026

   Decision issued

4. 29 Sep 2026

   Status changed to Decided

   Previously Registered.

• 26/00817/FPH Granted

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  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.

  Decided 3 Jun 2026 Householder

North Hertfordshire has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/02332/TCA Submitted 16 Sep 2026 50 yards away

  R1: Robinia - Remove.

  Granted Trees

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/00817/FPH Submitted 27 Mar 2026 50 yards away

  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.

  Granted Householder Extension Loft or dormer +1 12 docs
  Small domestic

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/00424/FPH Submitted 2 Mar 2026 50 yards away

  Erection of four bay cartlodge with habitable accommodation at first floor and external staircase following demolition of existing stables and store.

  Granted Householder Demolition 11 docs
  Domestic

• Crom Cottage Park Lane Old Knebworth Knebworth Hertfordshire SG3 6QA

  23/00789/LBC Submitted 31 Mar 2023 150 yards away

  Internal alterations together with replacement window frame (Item 9) and window lintels (Item 21) like-for-like.

  Granted Heritage and listed buildings Windows or glazing 11 docs

• 190 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PS

  22/01738/FPH Submitted 17 Aug 2022 150 yards away

  Single storey rear extension to facilitate 1-bed annexe accommodation following demolition of existing outbuilding

  Refused Householder Extension Demolition 10 docs
  Small domestic

• 190 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PS

  22/02172/LBC Submitted 17 Aug 2022 150 yards away

  Single storey rear extension to facilitate 1-bed annexe accommodation following demolition of existing outbuilding

  Refused Heritage and listed buildings Extension Demolition 11 docs
  Small domestic

• 26/02255/NMA Decided

  Highover Farm Highover Way Hitchin Hertfordshire SG4 0RQ

  Revisions to approved plans relating to (i) northern loop road raised table location, (ii) revised details for sub-station, (iii) minor alteration to location of pumping station and associated landscaping (as Non-Material Amendment of planing permission 25/02794/RM granted 06.05.2026)

  Received 8 Sep, published by the council 10 Sep 2026 Amendments
• 26/02352/NMA Decided

  11 Kingswood Avenue Hitchin Hertfordshire SG4 0PA

  Minor alterations to the position, size and arrangement of window and door openings, including revisions to the front and side elevations, together with associated minor internal layout changes. The overall scale, footprint, height, roof form and general appearance of the approved dwelling remain unchanged (as non-material amendment to planning permission reference 26/00109/FP granted on appeal on 03.09.2026).

  5 Oct 2026 Amendments
• 26/02438/NMA Decided

  Starwood House Avenue One Letchworth Garden City Hertfordshire SG6 2HB

  Minor amendments (as non-material amendment to planning permission 25/01196/FP granted on 22.01.2026).

  Received 15 Oct, published by the council 19 Oct 2026 Amendments
• 26/02230/NMA Decided

  The Elms The Causeway Therfield Royston Hertfordshire SG8 9PP

  Installation of metal windows (as Non-Material Amendment to planning permission 24/00802/FPH granted 17.09.2024)

  Received 7 Sep, published by the council 9 Sep 2026 Amendments
• 26/02295/NMA Decided

  Odsey Barn 8 North End Kelshall Royston Hertfordshire SG8 9SD

  Front window sill level lowered, pitched glass roof conservatory roof changed to flat parapet roof and glazing reduced to conservatory and removal of projecting cladding fins as illustrated on drawings 087_23 Rev A and 087_24 Rev A as Non Material Amendment to Reserved Matters application 23/01574/RM granted 01.12.2023

  25 Sep 2026 Amendments