5 Deards End Lane Knebworth Hertfordshire SG3 6NL

1. 4 Jan 2023

   Received by North Hertfordshire

2. 7 Mar 2023

   Decision issued: Granted

3. 9 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 8 Deards End Lane Knebworth Hertfordshire SG3 6NL

  19/02689/TCA Submitted 11 Nov 2019 73m away

  T1, T2, T3 Chestnut - Reduce crown by up to 30%. T4 Sycamore - Reduce crown by up to 30%.

  Granted Trees 4 docs

• 1 Deards End Lane Knebworth Hertfordshire SG3 6NL

  23/00340/TCA Submitted 13 Feb 2023 80m away

  Mature Oak - Remove

  Granted Trees 5 docs

• 12 Deards End Lane Knebworth Hertfordshire SG3 6NL

  20/02668/FPH Submitted 17 Nov 2020 117m away

  Part single storey part two storey side extensions, insertion of gable window to existing side gable end, erection of single storey attached front garage and ground and first floor rear extensions following demolition of existing front attached garage and rear conservatory

  Withdrawn Householder Extension Demolition +1 24 docs
  Small domestic

• 12 Deards End Lane Knebworth Hertfordshire SG3 6NL

  21/01475/FPH Submitted 17 May 2021 117m away

  Two storey side extension to one side of the property, and a single storey to the other side, part first floor and single storey rear extension, insertion of no.1 dormers to existing front elevation roofslope and erection of attached front elevation garage following demolition of existing front elevation attached garage and rear elevation conservatory

  Refused Householder Extension Loft or dormer +1 26 docs
  Small domestic

• 14 Deards End Lane Knebworth Hertfordshire SG3 6NL

  26/02081/FPH Submitted 19 Aug 2026 119m away

  90% historically approved · decision due ~14 Oct

  Erection of two storey side extension following demolition of existing ground floor side extension

  Awaiting decision Extension Demolition

• Land At Old Knebworth Lane Knebworth Herts SG3 6NL

  26/00447/SCR Submitted 10 Jun 2026 119m away

  92% historically approved · decision due ~5 Aug

  Ref: 18089 We write on behalf of our client Xela Energy Ltd to formally request an Environmental Impact Assessment (EIA) Screening Opinion from Stevenage Borough Council under Regulation 6 of the Town and Country Planning Regulations 2017

  Awaiting decision

• 26/01469/LDCP Granted

  30 Pirton Road Hitchin Hertfordshire SG5 2BD

  Single storey rear extension. Extension to rear patio.

  5 Jun 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.

  4 Jun 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.

  2 Jun 2026 Lawful development
• 26/01301/LDCP Granted

  47 Bingen Road Hitchin Hertfordshire SG5 2PR

  Single storey rear extension and alterations to existing fenestration.

  2 Jun 2026 Lawful development
• 26/01247/LDCP Granted

  47 Bedford Road Hitchin Hertfordshire SG5 2TP

  Erection of single storey detached outbuilding.

  20 May 2026 Lawful development