12 Highfield Letchworth Garden City Hertfordshire SG6 3QD

1. 17 Oct 2024

   Received by North Hertfordshire

2. 22 Nov 2024

   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

• 9 Sollershott West Letchworth Garden City Hertfordshire SG6 3PU

  24/01586/FPH Submitted 31 Jul 2024 75m away

  Installation of bay window to existing side elevation office, insertion of rooflights to existing rear roof slope to facilitate conversion of loft space into habitable accommodation and front porch extension to main dwelling. Installation of glazing to enclose the link between existing dwelling and garage, insertion of rooflight to roof to facilitate conversion of first floor into storage space, and alterations to fenestration of existing garage to facilitate conversion into habitable accommodation.

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

• 7 Sollershott West Letchworth Garden City Hertfordshire SG6 3PU

  19/02759/TCA Submitted 19 Nov 2019 79m away

  T1 Beech - Fell to ground level

  Granted Trees 4 docs

• 9 Highfield Letchworth Garden City Hertfordshire SG6 3QD

  21/01598/FPH Submitted 19 May 2021 83m away

  First floor rear extension.

  Decided Householder Extension 8 docs
  Domestic

• Highfield House 28 Hitchin Road Letchworth Garden City Hertfordshire SG6 3LU

  26/01639/TCA Submitted 29 Jun 2026 93m away

  99% historically approved · decision due ~24 Aug

  T1: Prunus - Reduce by 1.5m and thin by 25%

  Decided Trees

• 21 Highfield Letchworth Garden City Hertfordshire SG6 3QD

  26/01344/LDCP Submitted 3 Jun 2026 103m away

  Insertion of rear dormer window, front and rear roof lights and second floor side window to facilitate loft conversion

  Granted Lawful development Loft or dormer Windows or glazing 10 docs

• 2a Sollershott West Letchworth Garden City Hertfordshire SG6 3PX

  21/02135/FPH Submitted 14 Jul 2021 121m away

  Single storey front extension, single storey side infill extension and alterations to openings on existing front and side elevations.

  Decided Householder Extension 9 docs
  Small domestic

• 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