Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

This site has had 4 applications since 2026: 2 approved, 0 refused.

• 26/02210/NMA Awaiting decision

  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)

  Submitted 2 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. Decision

   Awaiting decision

   Decision expected by 11 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   North Hertfordshire took a median of 48 days over the applications it decided in the last year.

This application is with North Hertfordshire for determination, against a statutory target of eight weeks. Over the last year North Hertfordshire decided tree works applications in a median of 30 days. More in our guide to how long planning decisions take.

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 0m away

  93% historically approved · decision due ~28 Oct

  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)

  Awaiting decision Amendments Loft or dormer Windows or glazing

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/00817/FPH Submitted 27 Mar 2026 34m 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 34m 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

• 190 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PS

  22/01738/FPH Submitted 17 Aug 2022 157m 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 157m 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

• 207 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PR

  21/01307/LDCP Submitted 22 Apr 2021 191m away

  Hipped roof to a gabled roof and insertion of dormer to existing rear elevation roofslope

  Granted Lawful development Loft or dormer 5 docs

• 26/02334/TCA Awaiting decision

  Hill Rise Stevenage Road St Ippolyts Hitchin Hertfordshire SG4 7PE

  T1: Apple - Fell to ground level. T2: Cherry - Remove left stem.

  16 Sep 2026 Trees
• 26/02320/TCA Awaiting decision

  9 South View Letchworth Garden City Hertfordshire SG6 3JH

  T1: Purple leaved Plum - Trim and shape. T2: Conifer - Fell to ground level and remove all arisings and grind out stump. T3: Cherry - Fell to ground level and remove all arisings and grind out stump

  15 Sep 2026 Trees
• 26/02319/TCA Awaiting decision

  21B Bancroft Hitchin Hertfordshire SG5 1JW

  T1 & T2 Yew - Reduce by 50%

  15 Sep 2026 Trees
• 26/02302/TCA Awaiting decision

  The Old Rectory Hodwell Ashwell Baldock Hertfordshire SG7 5QQ

  T1: Spruce - Remove to ground level and grind.

  14 Sep 2026 Trees
• 26/02306/TCA Awaiting decision

  Land North Of Mount House The Mount Barley Hertfordshire SG8 8JH

  T001: Multi Stemmed Ash - Fell to ground level. T002: Ash - Pollard stem.

  14 Sep 2026 Trees