21 Gun Lane Knebworth Hertfordshire SG3 6BJ

1. 14 Jun 2021

   Received by North Hertfordshire

2. 10 Aug 2021

   Decision issued: Conditional Permission

3. 9 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 17 Gun Lane Knebworth Hertfordshire SG3 6BJ

  21/01255/FP Submitted 19 Apr 2021 30m away

  Erection of three 3-bed dwellings following demolition of existing bungalow with associated landscaping, vehicle parking and ancillary works (revision of previously approved planning application 20/01326/FP granted 10.09.2020).

  Decided Full applications Demolition 11 docs

• 1 Deeping Close Knebworth Hertfordshire SG3 6BW

  21/01795/FPH Submitted 15 Jun 2021 72m away

  Single storey front porch extension, single storey side extension, raise eaves height, conversion and extension of existing detached side elevation garage/store to link to main dwellinghouse

  Decided Householder Extension 11 docs
  Small domestic

• 76 Pondcroft Road Knebworth Hertfordshire SG3 6DE

  26/01555/FPH Submitted 6 Jul 2026 104m away

  90% historically approved · decision due ~31 Aug

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

  Awaiting decision Extension
  Small domestic

• 57 Pondcroft Road Knebworth Hertfordshire SG3 6DE

  26/01964/FPH Submitted 5 Aug 2026 104m away

  90% historically approved · decision due ~30 Sep

  Single storey rear extension following demolition of existing side/rear element.

  Awaiting decision Extension Demolition
  Small domestic

• 76 Pondcroft Road Knebworth Hertfordshire SG3 6DE

  26/01554/LDCP Submitted 16 Jun 2026 104m away

  90% historically approved · decision due ~11 Aug

  Insertion of L shaped rear dormer with Juliet balcony and 3 no. front roof lights to facilitate loft conversion to habitable space

  Decided Loft or dormer

• 7 Gun Lane Knebworth Hertfordshire SG3 6BH

  23/00329/FPH Submitted 10 Feb 2023 104m away

  Raise roof height, creation of gable ends and insertion of front and rear dormer windows to facilitate additional habitable accommodation at first floor level. Two storey front extension following demolition of existing porch. Alterations to fenestration

  Decided Householder Extension Loft or dormer +2 8 docs
  Small domestic

• 26/00371/FPH Decided

  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
• 26/00904/FPH Decided

  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 Decided

  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 Decided

  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
• 26/01062/FPH Decided

  47 Common Rise Hitchin Hertfordshire SG4 0HN

  Two storey and part single storey rear extension following demolition of existing rear element.

  22 May 2026 Householder