19 Briars Lane Hatfield AL10 8ES

1. 13 Aug 2024

   Received by Welwyn Hatfield

2. 8 Oct 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

• 11 Dellfield Road Hatfield AL10 8EW

  6/2021/1228/HOUSE Submitted 15 Apr 2021 103m away

  Erection of single storey side/rear extension

  Granted Householder Extension
  Small domestic

• Council owned flats: Feather Dell Hatfield AL10 8DD 20-42 Feather Dell Hatfield AL10 8DD

  6/2026/1275/FULL Submitted 20 Jul 2026 109m away

  81% historically approved · decision due ~14 Sep

  Installation of wall insulation (materials to match existing to all of the external wall), replacement windows and doors to double/triple glazed units and thermal doors, balcony insulation system to be added to balcony slab and new railings (to match existing) to be installed

  Awaiting decision Full applications Windows or glazing

• 2 Feather Dell Hatfield AL10 8DD

  6/2024/1916/HOUSE Submitted 7 Oct 2024 138m away

  Erection of single storey front extension and conversion of existing garage with alterations to the fenestration

  Granted Householder Extension Windows or glazing
  Small domestic

• 38 Dellfield Road Hatfield AL10 8EW

  6/2026/0417/HOUSE Submitted 6 Mar 2026 165m away

  Erection of a single storey rear extension and part side wrap around and front porch extension

  Granted Householder Extension
  Small domestic

• 31 Briars Wood Hatfield AL10 8DA

  6/2025/2020/FULL Submitted 19 Sep 2025 207m away

  Retrospective change of use from amenity land to residential driveway and retention of hardstanding

  Granted Full applications

• Hatfield Swim Centre Lemsford Road Hatfield AL10 0RU

  6/2021/1787/FULL Submitted 9 Jun 2021 212m away

  Installation of 2 air source heat pumps and associated air to water heat pumps within an acoustic enclosure

  Granted Full applications 1 doc

• 6/2026/0735/LAWE Refused

  1 Northaw Place Coopers Lane Northaw Potters Bar EN6 4NQ

  Certificate of lawfulness for the existing use of the land as residential garden land ancillary to the dwellinghouse continuously since 2012

  27 Apr 2026 Lawful development
• 6/2026/1132/LAWE Refused

  19 Cunningham Avenue Hatfield AL10 9LR

  Certificate of existing lawfulness of a 5 person HMO since 6 April 2006

  30 Jun 2026 Lawful development
• 6/2026/1506/LAWP Awaiting decision

  Gosmore Brocket Road Welwyn Garden City AL8 7TT

  Erection of single storey side extensions x 2 and two storey rear extension

  27 Aug 2026 Lawful development
• 6/2026/1503/LAWE Awaiting decision

  27 Batterdale Hatfield AL9 5JG

  Certificate of lawfulness for the existing like-for-like replacement of damaged and aged windows on the front and rear elevations

  26 Aug 2026 Lawful development
• 6/2026/1044/LAWP Granted

  5 Peartree Court Welwyn Garden City AL7 3XN

  Certificate of lawfulness for the change of use from C3 (dwellinghouse) to C4 (HMO for up to 6 unrelated residents)

  15 Jun 2026 Lawful development