21/02085/LDCP

1. 8 Jul 2021

   Received by North Hertfordshire

2. 20 Jul 2021

   Decision issued: Granted

3. 24 Jul 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

• 26/01579/FPH Awaiting decision

  64 Stockens Green Knebworth Hertfordshire SG3 6DQ

  Replace existing windows to front, side and rear elevations.

  15 Jul 2026 105m away Householder
• 26/00964/FPH Decided

  27 Stockens Green Knebworth Hertfordshire SG3 6DQ

  Single storey rear extension following demolition of existing conservatory

  29 Apr 2026 218m away Householder
• 24/01773/FPH Withdrawn

  19 Stockens Green Knebworth Hertfordshire SG3 6DQ

  Part two storey and part first floor rear extension. Single storey side extensions following demolition of existing detached garage and alterations to fenestration.

  8 Aug 2024 245m away Householder
• 26/01483/NMA Refused

  27 Lytton Fields Knebworth Hertfordshire SG3 6BA

  No raising of roof required, flat roof dormers (as existing design), Juliette balconies to rear dormer, extension of porch roof and no single storey rear extension as non-material amendment to planning permission reference 25/03244/FPH granted on 12.02.2026).

  8 Jun 2026 279m away Amendments
• 21/01795/FPH Decided

  1 Deeping Close Knebworth Hertfordshire SG3 6BW

  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

  15 Jun 2021 312m away Householder
• 23/00292/FPH Decided

  1 Gipsy Lane Knebworth Hertfordshire SG3 6PL

  Erection of detached outbuilding in rear garden

  8 Feb 2023 326m away Householder

• 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

  Erection of detached single storey rear garden room

  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