37 Haygarth Knebworth Hertfordshire SG3 6HF

1. 3 Feb 2023

   Received by North Hertfordshire

2. 13 Mar 2023

   Decision issued: Conditional Consent

3. 24 Jul 2026

   Added to PlanIndex

North Hertfordshire granted permission on 13 March 2023, 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.

• 57 Haygarth Knebworth Hertfordshire SG3 6HF

  26/02067/TPO Submitted 18 Aug 2026 50 yards away

  98% historically approved · decision due ~13 Oct

  T1: Yew - Clear from path & reduce away from no 68. T2: Beech- Girdle ivy at 1.5m. T3: Oak - Remove 4x Elm, 3x Sycamore, 1x Norway Maple from under its crown & reduce lowest roadside limb that is resting in Sycamore by 2-3m & Second limb above Highway by 2-3m. T4, T5: Holly - Girdle ivy at 1.5m. T6: 4x Hornbeam- Reduce/re-pollard back to boundary. T7: Oak, 2x Sycamore - Remove from beneath Ash, Oak & Lime. T8: Philadelphus - Remove 2x ivy covered stems & 1x Ivy covered

  Awaiting decision Trees

• 90 London Road Knebworth Hertfordshire SG3 6HB

  21/02005/LDCP Submitted 30 Jun 2021 100 yards away

  Insertion of rooflight to existing front elevation and rooflight and dormer window to existing rear elevation roofslope to facilitate conversion of loftspace into habitable accommodation

  Withdrawn Lawful development Loft or dormer Windows or glazing 5 docs

• 80 London Road Knebworth Hertfordshire SG3 6HB

  26/00208/FPH Submitted 16 Mar 2026 100 yards away

  Two storey rear extension with Juliet balcony, front porch and addition of pitched roof to existing garage and replace garage door with a window to facilitate conversion of garage into habitable accommodation following removal of existing porch. (renewal of previously approved planning permission 22/01469/FPH granted 26.07.2022)

  Granted Householder Extension Windows or glazing 10 docs
  Small domestic

• 78 London Road Knebworth Hertfordshire SG3 6HB

  26/01837/FPH Submitted 6 Aug 2026 150 yards away

  Single storey rear extension. Alterations to existing garage including insertion of front window following removal of garage door and raising roof to facilitate garage conversion. Erection of open-sided front porch and pitched roof above existing front bay window.

  Decided Extension Windows or glazing
  Small domestic

• 49 Pondcroft Road Knebworth Hertfordshire SG3 6DE

  22/02926/FPH Submitted 11 Nov 2022 200 yards away

  Single storey rear extensio following demolition of existing conservatory and outbuilding (as amended by plans received 20 March 2023).

  Granted Householder Extension Demolition 12 docs
  Small domestic

• 76 Pondcroft Road Knebworth Hertfordshire SG3 6DE

  26/01555/FPH Submitted 6 Jul 2026 200 yards away

  Single storey side and rear extensions with car port following removal of existing detached rear garage and shed.

  Decided Extension
  Small domestic

• 26/02265/TCA Granted

  Glendra Brickyard Lane Reed Royston Hertfordshire SG8 8BE

  T1: Honey locust - Re pollard by removing approx 3m of re growth back to previous pollard points at approx 4m from ground level. T2: Goat Willow - Pollard at 2m from ground level, removing 2m of growth. T3: Hawthorn - Pollard at 2m from ground level, removing 2m of growth.

  Received 9 Sep, published by the council 10 Sep 2026 Trees
• 26/01909/TPO Decided

  16 - 32 Tudor Court Hitchin Hertfordshire SG5 2BE

  T1: Redwood - Remove dead branches low In crown. T2: Turkish Hazel (amended) - crown lift by 4m. T3, T4: Conifer - face up as hard as possible whilst retaining the greenery, whole height. T5: Silver Birch - Crown reduce by 3m. T6: Laurel - Reduce height by 2m. T7: Holy - Cut back from building by 1m. T8: Oak - Cut back from building by 1m. T9: Hornbeam - Crown lift by 2m. T10: Sycamore - Crown lift by 4m over development side. T11: Conifer - Crown lift by 4m over development side. T12: Hornbeam - Crown lift by 4m over development side. T13: Sycamore - Crown lift by 4m over development side. T14: Sycamore - Crown lift by 4m over development side. T15: Yew - crown lift by 4m over development side. T16: Oak - crown lift by 4m over development side. T17: Yew - Crown lift by 4m over development side. T18: Holly - Crown lift by 4m over development side. T19: Yew - Crown lift by 4m over development side. G1: Conifers and Sycamores - Crown lift by 3m whole length

  Received 31 Jul, published by the council 2 Aug 2026 Trees
• 26/01903/TPO Refused

  11 Convent Close Hitchin Hertfordshire SG5 1QN

  Douglas Fir - Up to a 5m reduction

  Received 30 Jul, published by the council 2 Aug 2026 Trees
• 26/01893/TPO Decided

  Land At Rosemont Close Letchworth Garden City Hertfordshire SG6 4XR

  BEYT023: Birch - Crown reduce back from structure by up to 2m.

  Received 29 Jul, published by the council 2 Aug 2026 Trees
• 26/02107/TCA Granted

  Spring Cottage Ashwell Road Newnham Baldock Hertfordshire SG7 5JX

  2x Sycamore - Remove.

  24 Aug 2026 Trees