21 Windhill Welwyn Garden City AL7 1RH

1. 9 Feb 2026

   Received by Welwyn Hatfield

2. 19 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 12 May 2026

   Decision issued: Granted

4. 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.

This page mirrors an entry on the statutory planning register that Welwyn Hatfield is required to keep. The published feed for this record does not state which type of application it is, which is common for older entries and for some council systems; the register entry on the council portal will say, alongside the case officer and any consultation dates.

Every planning application follows the same broad path: submission, validation, publicity, then a decision by officers or committee. Our guide to planning application types explains the common types and what each can approve.

• 25 Windhill Welwyn Garden City AL7 1RH

  6/2021/1517/EMH Submitted 12 May 2021 17m 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 17m 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

• 10 Broomhills Welwyn Garden City AL7 1RF

  6/2021/1114/EM Submitted 6 Apr 2021 92m away

  Replacement windows to front and rear elevations, to swap rear back door for window and infill. New forward projecting front door layout including bricking up of existing small window and replacement UPVC cladding to front and rear elevations.

  Granted Extension Windows or glazing

• 21 Broomhills Welwyn Garden City AL7 1RG

  6/2026/0901/EM Submitted 20 May 2026 121m away

  Erection of single storey one bedroom annexe

  Granted
  Small domestic

• 2 Upper Shot Welwyn Garden City AL7 1RP

  6/2021/1845/EMT Submitted 15 Jun 2021 147m away

  1 x Sliver Birch stem to fell to ground level

  Withdrawn Trees

• 34 Broomhills Welwyn Garden City AL7 1RF

  6/2021/1368/EM Submitted 28 Apr 2021 162m away

  Creation of two car hard standing

  Granted