Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

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

• 26/02210/NMA Decided

  Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  External wall insulation and timber boarding added to east wall. Front door design updated, bi-fold doors changed to 6 doors and addiotnal rooflight added to landing outside bedroom 6 (as Non-Material Amendment to Planning Permission 26/00817/FPH granted 03.06.2026)

  Decided 29 Sep 2026 Amendments
• 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. 16 Sep 2026

   Received by North Hertfordshire

2. 17 Sep 2026

   Added to PlanIndex

3. 16 Oct 2026

   Decision issued: No Objection

4. 16 Oct 2026

   Status changed to Decided

   Previously Registered.

North Hertfordshire granted permission on 16 October 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Applications for works to trees cover protected trees: consent under a tree preservation order, or six weeks notice for trees in a conservation area. More in our guide to planning application types.

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/02210/NMA Submitted 2 Sep 2026 50 yards away

  External wall insulation and timber boarding added to east wall. Front door design updated, bi-fold doors changed to 6 doors and addiotnal rooflight added to landing outside bedroom 6 (as Non-Material Amendment to Planning Permission 26/00817/FPH granted 03.06.2026)

  Decided Amendments Loft or dormer Windows or glazing

• 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

• 26/02795/TPO Awaiting decision

  18 Sollershott West Letchworth Garden City Hertfordshire SG6 3PX

  Pine - Reduce to a standing stem approx 15ft (4.5m) tall, retaining the trunk as a wildlife habitat monolith.

  Received 28 Oct, published by the council 29 Oct 2026 Trees
• 26/02798/TCA Awaiting decision

  5 Trevor Road Hitchin Hertfordshire SG4 9TA

  T1: Ash - Crown lift and shorten back to suitable growth points and to balance the canopy. T2: Cotoneaster - Shorten back the longer protruding limbs to relieve weight to prevent branch collaspe and slight reduction in height. T3: Holly - Remove regrowth in height to its original size and prune back branches to keep the shape. T4: Bay - Pruned to neaten and shape.

  Received 28 Oct, published by the council 29 Oct 2026 Trees
• 26/02802/TCA Awaiting decision

  1 Roe Green Cottages Roe Green Sandon Buntingford Hertfordshire SG9 0QE

  T1,T2: Birch - Fell and treat stump with eco plugs (broadleaved).

  Received 28 Oct, published by the council 29 Oct 2026 Trees
• 26/02444/TCA Granted

  28 Meadow Way Letchworth Garden City Hertfordshire SG6 3JB

  MW8: Purple Leaf Plum - Crown reduce by 2-3m to maintain its size and shape.

  Received 29 Sep, published by the council 2 Oct 2026 Trees
• 26/02779/TCA Awaiting decision

  Land Opposite 27 Willian Church Road Willian Hertfordshire SG6 2AF

  T1660: Horse Chestnut - Crown lift to 3m over garden, remove deadwood and up to 20% thin over dense areas of the crown to allow air flow and reduce loading on unions.

  28 Oct 2026 Trees