Hertfordshire Data Centre Mundells Welwyn Garden City AL7 1GE

1. 5 Aug 2024

   Received by Welwyn Hatfield

2. 7 Nov 2024

   Decision issued: Granted

3. 24 Jul 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 7 November 2024, 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.

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

• 9 Sterling Court Mundells Welwyn Garden City AL7 1FZ

  6/2022/2690/LAWP Submitted 25 Nov 2022 300 yards away

  Certificate of lawfulness for proposed loft conversion with two side facing box dormers with four rooflights, installation of front and rear gable windows.

  Refused Lawful development Loft or dormer Windows or glazing

• 11 Sterling Court Mundells Welwyn Garden City AL7 1FZ

  6/2023/0339/HOUSE Submitted 13 Feb 2023 300 yards away

  Loft conversion complete with side dormers, floor plan redesign and all associated works

  Withdrawn Householder Loft or dormer
  Domestic

• 25 Windhill Welwyn Garden City AL7 1RH

  6/2021/1517/EMH Submitted 12 May 2021 350 yards away

  Erection of single storey side/front extension, single storey rear extension with insertion of roof light and replacing some glazing with facing brickwork to front existing window.

  Granted Householder Extension Loft or dormer +1
  Small domestic

• 25 Windhill Welwyn Garden City AL7 1RH

  6/2021/1507/HOUSE Submitted 12 May 2021 350 yards away

  Erection of single storey side/front extension, single storey rear extension with insertion of roof light and replacement of some glazing with facing brickwork to front existing window.

  Granted Householder Extension Loft or dormer +1
  Small domestic

• 21 Windhill Welwyn Garden City AL7 1RH

  6/2026/0227/EM Submitted 9 Feb 2026 350 yards away

  Installation of solar panels

  Granted

• 2 Upper Shot Welwyn Garden City AL7 1RP

  6/2021/1845/EMT Submitted 15 Jun 2021 350 yards away

  1 x Sliver Birch stem to fell to ground level

  Withdrawn Trees

• 6/2026/1555/COND Awaiting decision

  58 Bell Lane Brookmans Park AL9 7AY

  Submission of details pursuant to condition number 5 (energy statement) on planning permission 6/2025/2133/FULL

  Received 7 Sep, published by the council 14 Sep 2026 Conditions
• 6/2026/0273/COND Granted

  Land at Green Close 1 Green Close Brookmans Park Hatfield AL9 7ST

  Submission of details pursuant to condition number 1 (Construction Management Plan), 2 (Site hours), 3 (Approved scheme of remediation), 4 (Materials samples), 7 (Hard and soft landscape scheme), 11 (Refuse bin and recycling), 12 (Obscure glazing), 13 (First floor window glazing), 15 (EV charging), 16. (Secure cycle parking) on planning permission 6/2022/2387/FULL

  Received 17 Feb, published by the council 24 Jul 2026 Conditions
• 6/2026/1319/COND Granted

  30 Barleycroft Road Welwyn Garden City AL8 6JU

  Submission of details pursuant to condition 2 (windows, doors and velux) on planning application 6/2024/1734/HOUSE

  Received 28 Jul, published by the council 9 Aug 2026 Conditions
• 6/2026/0942/COND Granted

  The Coach and Horses 61 Newgate Street Village Hertford SG13 8RA

  Submission of details pursuant to condition number 1 (Construction Method Statement) & 2 (Archaeological Written Scheme of Investigation) on planning permission 6/2022/1957/FULL

  Received 29 May, published by the council 24 Jul 2026 Conditions
• 6/2026/1527/COND Awaiting decision

  Land at Hollybush Lane to the east of A1000 and north of Ascots Lane Welwyn Garden City AL7 4EG

  Submission of details pursuant to condition numbers 1 (Construction Environmental Management Plan), 2 (Arboricultural Method Statement and Tree Protection Plan), 3 (Construction Method Statement - Phase 2 only) and 4 (Site Waste Management Plan) on planning permission 6/2025/1024/RM

  Received 1 Sep, published by the council 13 Sep 2026 Conditions