29 Garden Avenue Hatfield AL10 8LL

1. 29 Mar 2021

   Received by Welwyn Hatfield

2. 24 May 2021

   Decision issued: Granted

3. 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.

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

• 45 Garden Avenue Hatfield AL10 8LL

  6/2026/0848/PN8 Submitted 13 May 2026 43m away

  Prior approval for the erection of a single storey rear extension measuring 5.5m in depth, 3.25m in height and 3m to the eaves following the demolition of existing conservatory

  Granted Prior approval Extension Demolition
  Small domestic

• 248 Bishops Rise Hatfield AL10 9QT

  6/2021/1705/PN8 Submitted 27 May 2021 94m away

  Prior approval for the erection of a single storey rear extension measuring 4.5m in depth, 2.86m in height and 2.86m to the eaves.

  Granted Prior approval Extension
  Small domestic

• 24 Garden Avenue Hatfield AL10 8LN

  6/2026/0608/HOUSE Submitted 7 Apr 2026 102m away

  Erection of a single storey rear extension.

  Refused Householder Extension
  Small domestic

• 169 Bishops Rise Hatfield AL10 9EP

  6/2026/0932/LAWP Submitted 27 May 2026 160m away

  Certificate of lawfulness for the erection of a single storey rear extension

  Granted Lawful development Extension
  Small domestic

• 10 Shallcross Crescent Hatfield AL10 9QH

  6/2024/1297/FULL Submitted 9 Jul 2024 169m away

  Retention of change of use from C3 (single family dwelling) to C2 (children and young people’s home)

  Granted Full applications
  Domestic

• 41 Cherry Way Hatfield AL10 8LF

  6/2024/1728/PN8 Submitted 9 Sep 2024 171m away

  Prior approval for the erection of a single storey rear extension measuring 4m deep, 2.8m eaves height, 2.95m max height

  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