200 Thistle Grove Welwyn Garden City AL7 4AJ

1. 21 Oct 2019

   Received by Welwyn Hatfield

2. 16 Dec 2019

   Decision issued: Granted

3. 22 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.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 208 Thistle Grove Welwyn Garden City AL7 4AJ

  6/2021/1588/EMH Submitted 18 May 2021 29m away

  Erection of part single storey and part two storey rear extension, with insertion of roof light, following demolition of existing extension. Change of window to existing side elevation.

  Granted Householder Extension Loft or dormer +2
  Small domestic

• 208 Thistle Grove Welwyn Garden City AL7 4AJ

  6/2021/1583/HOUSE Submitted 18 May 2021 29m away

  Erection of part single storey and part two storey rear extension, with insertion of roof light, following demolition of existing extension. Change of window to existing side elevation.

  Granted Householder Extension Loft or dormer +2
  Small domestic

• 28 Little Thistle Welwyn Garden City AL7 4AE

  6/2024/1252/EM Submitted 4 Jul 2024 120m away

  Installation of a driveway (retrospective)

  Granted

• Holwell Hyde Cottage Holwell Hyde Lane Welwyn Garden City AL7 4AA

  6/2022/2858/LAWP Submitted 19 Dec 2022 148m away

  Certificate of lawfulness for proposed rear extension, single storey side extension and a rear dormer

  Granted Lawful development Extension Loft or dormer
  Small domestic

• Holwell Hyde Cottage Holwell Hyde Lane Welwyn Garden City AL7 4AA

  6/2026/1129/COND Submitted 30 Jun 2026 148m away

  88% historically approved · decision due ~25 Aug

  Submission of details pursuant to Condition 1 (Landscaping), Condition 2 (Materials) and Condition 3 (Energy Efficiency) on planning permission 6/2024/1841/FULL

  Awaiting decision Conditions

• Holwell Hyde Cottage Holwell Hyde Lane Welwyn Garden City AL7 4AA

  6/2022/2922/PN8 Submitted 29 Dec 2022 148m away

  Prior approval for the erection of a single storey rear extension and single storey side extensions

  Granted Prior approval Extension
  Small domestic

• 6/2026/1228/HOUSE Granted

  109 Mount Way Welwyn Garden City AL7 4LA

  Erection of single storey front extension

  13 Jul 2026 Householder
• 6/2026/1011/HOUSE Granted

  5 Brookside Crescent Cuffley Potters Bar EN6 4QW

  Erection of rear extension, single storey side extension, new porch, additions/alterations to windows on side elevation and demolition of garage

  9 Jun 2026 Householder
• 6/2026/0703/HOUSE Granted

  57 Great North Road Brookmans Park AL9 6LA

  Erection of part double part single storey rear extension, single storey front porch extension, raising of roof and eaves to accommodate loft conversion, alterations to materials and fenestration, erection of front boundary wall and gates

  20 Apr 2026 Householder
• 6/2026/0534/HOUSE Refused

  16 Chipmunk Chase Hatfield AL10 9GH

  Retention of single storey rear extension and garage conversion to study/office

  24 Mar 2026 Householder
• 6/2026/1175/HOUSE Granted

  5A Honeycroft Welwyn Garden City AL8 6HR

  Erection of a single storey rear extension, alterations to opening on side elevation and garden room with covered area following demolition of conservatory

  7 Jul 2026 Householder