1 Warren Green Hatfield AL10 0AJ

1. 17 Jun 2021

   Received by Welwyn Hatfield

2. 18 Jun 2021

   Validated

   Checked as complete and ready for consideration.

3. 11 Aug 2021

   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.

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

• 20 Warren Close Hatfield AL10 0AL

  6/2023/0202/HOUSE Submitted 27 Jan 2023 136m away

  Erection of single storey rear extension

  Granted Householder Extension
  Small domestic

• 29 Warren Close Hatfield AL10 0AL

  6/2024/1417/LAWP Submitted 25 Jul 2024 150m away

  Certificate of lawfulness for a proposed front porch

  Granted Lawful development Extension
  Small domestic

• 55 Wood Common Hatfield AL10 0UE

  6/2026/0948/HOUSE Submitted 29 May 2026 200m away

  Erection of part single, part two storey rear extension and installation of two windows within the right elevation.

  Refused Householder Extension Windows or glazing
  Domestic

• 66 Hillfield Hatfield AL10 0TU

  6/2024/1435/PN8 Submitted 30 Jul 2024 262m away

  Prior approval for the erection of a single storey rear extension measuring 3.33m in depth, 2.90m in height and 2.53m to the eaves

  Granted Prior approval Extension
  Small domestic

• 79 Homestead Road Hatfield AL10 0QP

  6/2026/0235/HOUSE Submitted 10 Feb 2026 268m away

  Erection of single storey side extension, hardstanding and vehicle crossover

  Withdrawn Householder Extension
  Small domestic

• 13 Lockley Crescent Hatfield AL10 0TL

  6/2022/1045/HOUSE Submitted 5 May 2022 271m away

  Erection of single storey front extension to an existing outbuilding to form ancillary habitable accommodation

  Granted Householder 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