7A Mill Green Road Welwyn Garden City AL7 3UU

1. 17 Mar 2026

   Received by Welwyn Hatfield

2. 18 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 22 May 2026

   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

• 7A Mill Green Road Welwyn Garden City AL7 3UU

  6/2026/0506/EM Submitted 18 Mar 2026 0m away

  Installation of a conservatory at rear of property

  Granted Extension

• 17 Bedwell Close Welwyn Garden City AL7 3XH

  6/2024/1965/HOUSE Submitted 14 Oct 2024 118m away

  Installation of air source heat pump

  Granted Householder
  Domestic

• 14 Duncan Close Welwyn Garden City AL7 3XP

  6/2023/0861/LAWP Submitted 24 Apr 2023 119m away

  Certificate of lawfulness for erection of rear conservatory

  Granted Lawful development Extension

• 110 Peartree Lane Welwyn Garden City AL7 3UJ

  6/2023/0162/ADV Submitted 23 Jan 2023 124m away

  Installation of a Medpoint Solo prescription collection machine adjacent to the pharmacy carpark and new fascia signs

  Granted Advertising

• 45 Mill Green Road Welwyn Garden City AL7 3UX

  6/2021/1587/EMT Submitted 18 May 2021 144m away

  1 x Eucalyptus to reduce by 3m height & 2.5m width.

  Granted Trees

• 45 Mill Green Road Welwyn Garden City AL7 3UX

  6/2021/1581/TC Submitted 18 May 2021 144m away

  1 x Eucalyptus to reduce by 3m height & 2.5m width.

  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