71 Mill Green Road Welwyn Garden City AL7 3UX

1. 6 Apr 2021

   Received by Welwyn Hatfield

2. 5 Jul 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

• 79 Mill Green Road Welwyn Garden City AL7 3UX

  6/2025/2358/HOUSE Submitted 10 Nov 2025 26m away

  83% historically approved · decision due ~6 Jan

  Erection of a two storey side extension, single storey rear extension and loft conversion with sun tunnels and rear rooflight, installation of replacement front door

  Awaiting decision Householder Extension Loft or dormer
  Small domestic

• 79 Mill Green Road Welwyn Garden City AL7 3UX

  6/2025/2294/EM Submitted 29 Oct 2025 26m away

  90% historically approved · decision due ~29 Dec

  Erection of a two storey side/single storey rear extension and loft conversion (resubmission of refused application 6/2025/0950/EM)

  Awaiting decision Extension Loft or dormer
  Small domestic

• 68 Mill Green Road Welwyn Garden City AL7 3XF

  6/2023/0385/EM Submitted 20 Feb 2023 52m away

  Erection of single storey rear and side extension

  Granted Extension
  Small domestic

• 68 Mill Green Road Welwyn Garden City AL7 3XF

  6/2023/0381/HOUSE Submitted 20 Feb 2023 52m away

  Erection of single storey rear and side extension

  Granted Householder Extension
  Small domestic

• 64 Holwell Road Welwyn Garden City AL7 3RN

  6/2026/1234/EMT Submitted 14 Jul 2026 78m away

  1 x Silver maple (all tree works only over the garden of 5 Furzefield) to reduce to by 3m in height & reduce lateral branches by 2.5m

  Granted Trees

• 64 Holwell Road Welwyn Garden City AL7 3RN

  6/2026/1225/TC Submitted 13 Jul 2026 78m away

  1 x Silver maple to reduce to by 3m in height - only the section that is in line with boundary of No.5 Furzefield, reduce lateral branches that grow towards No.5 Furzefield by 2.5m. Reducing canopy to prevent excessive overhang to surrounding neighbours

  Granted Trees

• 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