4 Old Dairy Yard Welwyn Garden City AL7 4BY

1. 23 Feb 2026

   Received by Welwyn Hatfield

2. 13 May 2026

   Decision issued: Granted

3. 9 Aug 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 13 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 3 Old Dairy Yard Welwyn Garden City AL7 4BY

  6/2024/0933/HOUSE Submitted 20 May 2024 13m away

  Installation of air source heat pump

  Granted Householder
  Domestic

• 14 Four Acres Welwyn Garden City AL7 4NW

  6/2020/1680/LAWP Submitted 13 Jul 2020 169m away

  Certificate of Lawfulness for erection of summer house in rear garden

  Refused Lawful development

• 50 Great Ley Welwyn Garden City AL7 4TL

  6/2021/1938/LAWP Submitted 25 Jun 2021 190m away

  Certificate of lawfulness for erection of single storey rear extension.

  Refused Lawful development Extension
  Small domestic

• 43 Great Ley Welwyn Garden City AL7 4TJ

  6/2026/1218/LAWP Submitted 13 Jul 2026 240m away

  81% historically approved · decision due ~9 Sep

  Certificate of lawfulness for rear dormer roof extension to form a loft conversion

  Awaiting decision Lawful development Extension Loft or dormer

• 128 Mount Way Welwyn Garden City AL7 4JX

  6/2022/2425/EM Submitted 19 Oct 2022 296m away

  Erection of a single storey rear & side extension

  Granted Extension
  Small domestic

• 43 Meadway Welwyn Garden City AL7 4NQ

  6/2021/1714/HOUSE Submitted 28 May 2021 304m away

  Erection of two storey rear extension to include raised steps, alterations to openings on existing side and rear elevations.

  Granted Householder Extension
  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