125 Knella Road Welwyn Garden City AL7 3NA

1. 7 Apr 2026

   Received by Welwyn Hatfield

2. 8 Jul 2026

   Decision issued: Granted

3. 24 Jul 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 8 July 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.

• Isabel Hospice Head Office 99 99 Bridge Road East Welwyn Garden City AL7 1GL

  6/2024/1861/TPO Submitted 27 Sep 2024 100 yards away

  T2 Lime tree dead, fell to ground level. TPO187 G1 and TPO 904 (2023) G1

  Granted Trees

• Isabel Hospice Head Office 99 Bridge Road East Welwyn Garden City AL7 1GL

  6/2024/2115/COND Submitted 1 Nov 2024 100 yards away

  Submission of details pursuant to Condition 1 (Trees), Condition 2 (Landscaping), Condition 7 (Tactile paving crossing) Condition 8 (Travel Plan), Condition 10 (Cycle parking), Condition 11 (EV Charging) on planning permission 6/2024/0525/FULL

  Granted Conditions Trees

• Land at rear of 2 Woodfield Road Welwyn Garden City AL7 1JH

  6/2026/0248/FULL Submitted 12 Feb 2026 100 yards away

  Erection of a new building to house a Class 7 MOT testing station in connection with Burrowfields Autos

  Granted Full applications

• 9 Longmore Gardens Welwyn Garden City AL7 3NH

  6/2021/1147/LAWP Submitted 8 Apr 2021 150 yards away

  Certificate of lawfulness for the windows and doors to be replaced with energy efficient products

  Refused Lawful development Windows or glazing

• 10 Groom Place Welwyn Garden City AL7 1GG

  6/2021/0954/HOUSE Submitted 24 Mar 2021 200 yards away

  Erection of single storey rear extension with insertion of 2 x rooflights and widening of first floor balcony

  Granted Householder Extension Loft or dormer
  Small domestic

• 165 Knella Road Welwyn Garden City AL7 3NT

  6/2024/1545/PN8 Submitted 13 Aug 2024 200 yards away

  Prior approval for the erection of a single storey rear infill extension measuring 6.00m in depth, 3.69m in height and 2.46m to the eaves

  Granted Prior approval Extension
  Small domestic

• 6/2026/1198/HOUSE Granted

  9 Mardley Hill Welwyn AL6 0UE

  Erection of single storey front, side and rear extension, raising the existing roof and formation of rear dormer. Alterations to the fenestration, including, installation of new windows and doors and external rendering and cladding, following the demolition of garage and porch

  Received 10 Jul, published by the council 24 Jul 2026 Householder
• 6/2026/1257/HOUSE Granted

  21 The Swallows Welwyn Garden City AL7 1BX

  Garage conversion with alterations to openings to front and rear elevations

  Received 17 Jul, published by the council 1 Aug 2026 Householder
• 6/2026/1293/HOUSE Granted

  33 Claves Crescent Welwyn Garden City AL7 1WN

  Erection of a single storey rear conservatory

  Received 22 Jul, published by the council 1 Aug 2026 Householder
• 6/2026/1202/HOUSE Granted

  40 Cecil Crescent Hatfield AL10 0HG

  Erection of single storey rear extension

  Received 10 Jul, published by the council 9 Aug 2026 Householder
• 6/2026/1228/HOUSE Granted

  109 Mount Way Welwyn Garden City AL7 4LA

  Erection of single storey front extension

  Received 13 Jul, published by the council 9 Aug 2026 Householder