35 Hornbeam Spring Knebworth Hertfordshire SG3 6AY

1. 8 Apr 2026

   Received by North Hertfordshire

2. 22 Apr 2026

   Decision issued: Granted

3. 9 Aug 2026

   Added to PlanIndex

North Hertfordshire granted permission on 22 April 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 2 Stockens Dell Knebworth Hertfordshire SG3 6BG

  24/01922/LDCP Submitted 28 Aug 2024 100 yards away

  Single storey rear extension

  Granted Lawful development Extension 7 docs
  Small domestic

• 64 Stockens Green Knebworth Hertfordshire SG3 6DQ

  26/01579/FPH Submitted 15 Jul 2026 100 yards away

  Replace existing windows to front, side and rear elevations.

  Refused Windows or glazing

• 45 Stockens Green Knebworth Hertfordshire SG3 6DQ

  26/02225/TCA Submitted 7 Sep 2026 100 yards away

  T1: Silver Birch - Reduce crown by around 30% (around 2-3m) to bring back into proportion and reduce wind and stress loading on the main stem connection.

  Granted Trees

• 26 Stockens Dell Knebworth Hertfordshire SG3 6BG

  23/00052/FPH Submitted 9 Jan 2023 100 yards away

  First floor front extension

  Granted Householder Extension
  Domestic

• 28 Stockens Dell Knebworth Hertfordshire SG3 6BG

  23/00041/FPH Submitted 6 Jan 2023 100 yards away

  First floor front infill extension, single storey front extension and open sided front porch following demolition of existing front extension

  Granted Householder Extension Demolition
  Small domestic

• 19 Stockens Green Knebworth Hertfordshire SG3 6DQ

  24/01773/FPH Submitted 8 Aug 2024 150 yards away

  Part two storey and part first floor rear extension. Single storey side extensions following demolition of existing detached garage and alterations to fenestration.

  Withdrawn Householder Extension Demolition +1
  Small domestic

• 26/01469/LDCP Granted

  30 Pirton Road Hitchin Hertfordshire SG5 2BD

  Single storey rear extension. Extension to rear patio.

  Received 5 Jun, published by the council 24 Jul 2026 Lawful development
• 26/01459/LDCP Granted

  80 Balmoral Road Hitchin Hertfordshire SG5 1XQ

  Single storey rear extension and insertion of three rooflights to existing rear element. Front porch extension.

  Received 4 Jun, published by the council 24 Jul 2026 Lawful development
• 26/01426/LDCP Granted

  25 Balmoral Road Hitchin Hertfordshire SG5 1XG

  Insertion of rear box dormer and installation of 3 rooflights to front roof slope to facilitate conversion of loft space to habitable accommodation.

  Received 2 Jun, published by the council 24 Jul 2026 Lawful development
• 26/01301/LDCP Granted

  47 Bingen Road Hitchin Hertfordshire SG5 2PR

  Single storey rear extension and alterations to existing fenestration.

  Received 2 Jun, published by the council 24 Jul 2026 Lawful development
• 26/01247/LDCP Granted

  47 Bedford Road Hitchin Hertfordshire SG5 2TP

  Erection of single storey detached outbuilding.

  Received 20 May, published by the council 24 Jul 2026 Lawful development