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Planning application

22/03140/LDCP

Thistley Farm Thistley Lane Gosmore Hertfordshire SG4 7QT

Granted North Hertfordshire Lawful Development Certificate Proposed

Proposal

Internal and external works to Barn and Studio to include blocking and boarding over of existing front window. New door and glazed panels to replace existing rear and front doors to the same width opening but raised height (barn). Replacement/re-siting of four existing rear windows (barn). Insertion of five (two in barn, one in studio, two in gym) rear rooflights. Insertion of part mezzanine and staircase to create two ensuite bedrooms (barn). Creation of lobby in ground floor (studio). Creation of bedroom from existing bonus/room loft upper floor (studio).

As published by the council, reference 22/03140/LDCP

Timeline

Dates from the published record

  1. 5 Dec 2022

    Received by North Hertfordshire

  2. 8 Dec 2022

    Validated

    Checked as complete and ready for consideration.

  3. 27 Mar 2023

    Decision issued: Granted

  4. 30 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

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.

About lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

  • 22/03141/FP Decided

    Thistley Farm Thistley Lane Gosmore Hertfordshire SG4 7QT

    Installation of an underground water tank and pond for surface water drainage purposes.

    8 Dec 2022 14m away Full applications
  • 22/03139/LBC Granted

    Thistley Farm Thistley Lane Gosmore Hertfordshire SG4 7QT

    External and internal alterations to farmhouse and adjacent link.

    14 Dec 2022 61m away Heritage and listed buildings
  • 23/00236/LDCP Granted

    Thistley End Thistley Lane Gosmore Hitchin Hertfordshire SG4 7QT

    Erection of a detached Swimming Pool Outbuilding

    3 Feb 2023 119m away Lawful development
  • 26/01285/LDCP Granted

    91 Waterdell Lane St Ippolyts Hitchin Hertfordshire SG4 7RA

    Alterations to existing roof to include hip to gable roof extension, insertion of rear box dormer with Juliet balconies and front rooflights to facilitate loft conversion into habitable accommodation.

    18 May 2026 401m away Lawful development
  • 26/01521/FPH Awaiting decision

    81 Waterdell Lane St Ippolyts Hitchin Hertfordshire SG4 7RA

    Rear roof extension and insertion of front rooflights to create habitable accommodation at first floor level. Installation of flat roof above existing single storey rear element. Front porch extension, attached rear pergola and installation of external cladding. Alterations to fenestration. Erection of detached front garage following demolition of existing outbuildings. Installation of boundary wall and rear decking.

    1 Jul 2026 438m away Householder
  • 26/00984/FPH Decided

    Cherry Trees Preston Road Gosmore Hitchin Hertfordshire SG4 7QS

    Single storey side extension and alterations to fenestration following demolition of existing porch. Extended gravel parking/turning area and hardscaping works. Lowering of ground level by 0.5m to facilitate erection of detached double garage, with solar panels on roof, steps to side entrance door of garage and installation of air source heat pump at rear of garage following demolition of existing outbuildings. Installation of air conditioning unit on existing single storey element flat roof. (Amended plans received 19.05.2026 & 25.06.2026)

    6 May 2026 445m away Householder

In North Hertfordshire

  • 26/01621/LDCP Granted

    21 Danesbury Park Road Welwyn Hertfordshire AL6 9SH

    Two storey rear extension following removal of existing single storey rear elements

    8 Jul 2026 Lawful development
  • 26/01501/LDCP Granted

    56 Grays Lane Hitchin Hertfordshire SG5 2HJ

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    24 Jun 2026 Lawful development
  • 26/01293/LDCP Refused

    35 Dacre Road Hitchin Hertfordshire SG5 1QJ

    Insertion of rear dormer window with Juliet barrier and two front rooflights

    22 Jun 2026 Lawful development
  • 26/01557/LDCP Granted

    11 Matthew Gate Hitchin Hertfordshire SG4 9EQ

    Insertion of rear box dormer with Juliet balcony and 2 no. front rooflights to facilitate loft conversion to habitable space

    16 Jun 2026 Lawful development
  • 26/01672/LDCP Refused

    3 Westfield Lane Hitchin Hertfordshire SG5 2HE

    Alterations to existing roof to include hip to gable roof extension and insertion of rear dormer window and second floor side window to facilitate loft conversion into habitable accommodation.

    2 Jul 2026 Lawful development