12-13 Blackhorse Road Letchworth Garden City SG6 1HL

1. 13 Jun 2007

   Received by North Hertfordshire

2. 9 Aug 2007

   Validated

   Checked as complete and ready for consideration.

3. 17 Mar 2008

   Decision issued: Conditional Permission

4. 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.

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• Autoglym Works Road Letchworth Garden City Hertfordshire SG6 1LU

  24/00497/FP Submitted 11 Jun 2024 277m away

  Extension to main warehouse/production building and reconfiguration of existing car parking areas following demolition of existing buildings

  Decided Full applications Extension Demolition 22 docs

• Land At Blackhorse Road And Ashfield Drive Letchworth Garden City Hertfordshire SG6 1GP

  26/01650/EC Submitted 29 Jun 2026 312m away

  90% historically approved · decision due ~24 Aug

  Installation of 20m pole supporting 9no. antennas and two equipment cabinets following removal of existing 12.50m pole, 3no. antennas and equipment cabinet and ancillary development thereto.

  Decided

• 29 Ashfield Drive Letchworth Garden City Hertfordshire SG6 1GP

  26/01417/FPH Submitted 10 Jun 2026 312m away

  90% historically approved · decision due ~5 Aug

  Single storey rear extension. Installation of retaining walls and alterations to ground levels in rear garden.

  Decided Extension
  Small domestic

• Unit 22a Jubilee Trade Centre Jubilee Road Letchworth Garden City Hertfordshire SG6 1SP

  21/01350/FP Submitted 27 Apr 2021 351m away

  Creation of internal office accommodation at first floor level and reception / WC area at ground floor level. Replacement ribbon windows and door to front elevation and insertion of new windows to facilitate the proposed ground floor accommodation.

  Decided Full applications Windows or glazing 10 docs

• 2 Cedar Gardens Letchworth Garden City Hertfordshire SG6 1GQ

  23/00061/FPH Submitted 10 Jan 2023 358m away

  Insertion of rooflights to existing rear and side elevation roofslope to facilitate conversion of loftspace into habitable accommodation. Insertion of window to existing first floor side elevation eaves.

  Decided Householder Loft or dormer Windows or glazing 13 docs
  Domestic

• 623 Blackhorse Road Letchworth Garden City Hertfordshire SG6 1HB

  26/01012/FP Submitted 16 Apr 2026 414m away

  Change of use from Sui Generis Timber Merchant to flexible Class B2/B8/E(g)(iii) Industrial and alterations to existing parking arrangements.

  Decided Full applications 14 docs

• 26/02039/FP Awaiting decision

  77 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PP

  Erection of one detached three-bedroom dwelling including detached double garage with Air Source Heat Pump and soft and hard landscaping works following demolition of existing detached structures.

  3 Sep 2026 Full applications
• 26/01924/FP Awaiting decision

  Former Big Cat Sanctuary Codicote Road Welwyn Hertfordshire AL6 9TU

  Erection of 109 residential dwellings with access, parking, hard and soft landscaping and public open space following demolition of all existing buildings and structures

  1 Sep 2026 Full applications
• 26/01915/FP Awaiting decision

  Former Pavilion Jacks Hill Farm Jacks Hill Graveley Hertfordshire SG4 7EQ

  Conversion of the existing pavilion to form three 1-bed self-contained dwellings (Development already carried out).

  28 Aug 2026 Full applications
• 26/01724/FP Awaiting decision

  134 High Street Kimpton Hitchin Hertfordshire SG4 8QP

  Erection of two semi-detached 3-bed dwellings following demolition of existing dwelling and double garage including landscaping, parking , bin and bike storage and installation of two air source heat pumps. Installation of pedestrian access.

  27 Aug 2026 Full applications
• 25/03184/FP Decided

  Mill Farm High Street Whitwell Hitchin Hertfordshire SG4 8AG

  Conversion and extension of existing barn/outbuilding to create one two-bedroom dwelling. (amended plans received 05.02.2026).

  15 Jan 2026 Full applications