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

Welwyn Hatfield granted permission on 12 May 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.

The published feed does not state which type of application this is; the register entry on Welwyn Hatfield's portal will say. Our guide explains the common types.

• 25 Windhill Welwyn Garden City AL7 1RH

  6/2021/1517/EMH Submitted 12 May 2021 50 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 50 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

• 10 Broomhills Welwyn Garden City AL7 1RF

  6/2021/1114/EM Submitted 6 Apr 2021 100 yards 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 150 yards 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 150 yards away

  1 x Sliver Birch stem to fell to ground level

  Withdrawn Trees

• 164 Daniells Welwyn Garden City AL7 1QW

  6/2021/2355/EM Submitted 9 Aug 2021 150 yards away

  Conversion of garage to habitable space for use as utility room

  Granted