12 Stevenage Road Knebworth Hertfordshire SG3 6AW

1. 14 Apr 2026

   Received by North Hertfordshire

2. 16 Jul 2026

   Decision issued: Conditional Permission

3. 24 Jul 2026

   Added to PlanIndex

• Enforcement: 26/00043/1ENF (Case Closed)

North Hertfordshire granted permission on 16 July 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.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 1 Church Gardens Stevenage Road Knebworth Hertfordshire SG3 6AR

  21/01514/TPO Submitted 11 May 2021 59m away

  T1 Hornbeam - Felled as dead and dangerous.

  Granted Trees 8 docs

• 2 Church Gardens Stevenage Road Knebworth Hertfordshire SG3 6AR

  26/01019/TPO Submitted 17 Apr 2026 65m away

  2 x Hornbeam - Reduce by 3.5m height

  Granted Trees 6 docs

• 11 Westland Road Knebworth Hertfordshire SG3 6AS

  21/02335/LDCP Submitted 3 Aug 2021 119m away

  Rear dormer to facilitate loft conversion

  Granted Lawful development Loft or dormer 6 docs

• The Surgery Station Road Knebworth Hertfordshire SG3 6AP

  19/02489/FP Submitted 23 Oct 2019 127m away

  First floor rear extension and conversion of existing doctors surgery into 6 x 1-bed flats including parking and amenity space

  Granted Full applications New dwelling Extension 13 docs

• 20 Station Road Knebworth Hertfordshire SG3 6AP

  19/02591/FPH Submitted 8 Nov 2019 137m away

  Formation of vehicular access onto Station Road

  Granted Householder 6 docs
  Domestic

• 23 Watton Road Knebworth Hertfordshire SG3 6AH

  26/01923/FPH Submitted 31 Jul 2026 157m away

  93% historically approved · decision due ~25 Sep

  Rear roof extension including insertion of rear dormer window and side rooflights to facilitate additional accommodation at first floor level following removal of existing rear dormer window.

  Decided Extension Loft or dormer +1

• 26/00371/FPH Granted

  12 Dale Close Hitchin Hertfordshire SG4 9AS

  Replacement raised hipped roof and insertion of front rooflight and two rear dormers to facilitate loft conversion into habitable accommodation. Two storey and part single storey side and rear extensions and front porch following demolition of existing side and rear extensions. Alterations to fenestration to include insertion of first floor side window. External cladding and Installation of rear raised patio and steps.

  10 Feb 2026 Householder
• 26/02105/FPH Awaiting decision

  53 Norton Crescent Baldock Hertfordshire SG7 5BE

  Two storey rear extension, alterations to fenestration and rear patio area

  21 Aug 2026 Householder
• 26/00904/FPH Granted

  4 Leete Place Royston Hertfordshire SG8 5DX

  Single storey side and rear extension, open-sided front porch, replacement roof including installation of rooflights, removal of chimney and alterations to existing fenestration following demolition of existing store. Installation of vehicular access via dropped kerb and vehicle crossover including hardstanding to provide No.2 parking spaces.

  22 Apr 2026 Householder
• 26/01380/FPH Granted

  15 Ninesprings Way Hitchin Hertfordshire SG4 9NQ

  Part two storey and part single storey side extension and single storey rear extension following demolition of existing side element and rear conservatory. Front porch, alterations to fenestration and hard and soft landscaping works. External cladding and rendering.

  5 Jun 2026 Householder
• 26/01414/FPH Granted

  80 Willian Road Hitchin Hertfordshire SG4 0LT

  Replacement raised roof to facilitate additional accommodation at first floor level. Two storey rear extension following removal of existing shed. Alterations to fenestration and external render. Installation of front hardstanding and provision of two parking spaces.

  1 Jun 2026 Householder