45-63 Brownfields Mill Brownfields Welwyn Garden City AL7 1AN

1. 30 Apr 2026

   Received by Welwyn Hatfield

2. 21 May 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. 24 Aug 2026

   Decision issued: Granted

Welwyn Hatfield granted permission on 24 August 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Unit 19 Martinfield Business Centre Martinfield Welwyn Garden City AL7 1HG

  6/2021/2893/FULL Submitted 8 Oct 2021 100 yards away

  Change of use from storage (Class B8) and commercial (Class E) to non-residential institution (Class F1) and associated external alterations.

  Refused Full applications

• 6 City Park Swiftfields Welwyn Garden City AL7 1LY

  6/2019/2620/COND Submitted 18 Oct 2019 100 yards away

  Submission of details pursuant to condition 1 (plant and equipment noise) and 2 (cycle parking) on planning permission 6/2019/2000/FULL

  Split decision Conditions

• Unit J City Park Welwyn Garden City AL7 1LT

  6/2026/0391/FULL Submitted 3 Mar 2026 150 yards away

  Change of use of existing industrial unit (Use Class B2) to Use Classes E(g)(iii) (Industrial Processes), B2 (General Industrial) and B8 (Storage and Distribution) together with refurbishment works including relocation of main entrance, installation of an additional shutter door, installation of plant and PV panels, recladding, reconfiguration of service yard and landscaping

  Granted Full applications

• 29 Brownfields Welwyn Garden City AL7 1AN

  6/2021/0883/COND Submitted 18 Mar 2021 200 yards away

  Submission of details pursuant to condition 2 (location of disabled car user parking bay) & 3 (location of electric vehicle charging point), on planning permission 6/2018/1616/FULL

  Granted Conditions

• Inspira House Martinfield Welwyn Garden City AL7 1GW

  6/2026/0204/FULL Submitted 5 Feb 2026 200 yards away

  Installation of roof insulation and new edge detail, raising height by 500mm. Addition of externally mounted rainwater hoppers and downpipes

  Granted Full applications

• Inspira House Martinfield Welwyn Garden City AL7 1GW

  6/2020/3130/FULL Submitted 24 Nov 2020 200 yards away

  Addition of 3 residential units to existing building.

  Withdrawn Full applications

• 6/2026/1052/FULL Granted

  Unit 3 Woodside Lane Hatfield AL9 6DE

  Retention of an extension to the existing building and the erection of a rear extension following demolition of existing buildings (part retrospective)

  Received 17 Jun, published by the council 24 Jul 2026 Full applications
• 6/2026/1264/FULL Granted

  53 Brookmans Avenue Brookmans Park AL9 7QG

  Erection of dwelling with boundary wall and gates following demolition of existing property

  Received 17 Jul, published by the council 15 Aug 2026 Full applications
• 6/2026/1337/FULL Granted

  Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA

  Relocation of the Transfusion Medicine Vet Pod and associated parking, landscaping and associated works

  Received 30 Jul, published by the council 9 Aug 2026 Full applications
• 6/2026/1689/MAJ Awaiting decision

  Howlands House Howlands Welwyn Garden City AL7 4QJ

  Erection of a single 3 and 4-storey building comprising 44 temporary accommodation homes, staff office and laundry facilities, children's play space, cycle and vehicular parking, associated servicing, plant enclosure, substation, landscaping and external works.

  Received 25 Sep, published by the council 1 Oct 2026 Full applications
• 6/2026/0952/FULL Granted

  18 Fallowfield Welwyn Garden City AL7 1EE

  Retrospective application for change of use from amenity land to residential land to form part hardstanding and part garden land at the front of the property and installation of a drop kerb

  Received 1 Jun, published by the council 24 Jul 2026 Full applications