165 Knella Road Welwyn Garden City AL7 3NT

1. 13 Aug 2024

   Received by Welwyn Hatfield

2. 24 Sep 2024

   Decision issued: Prior Approval Not Required

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.

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

• 178 Knella Road Welwyn Garden City AL7 3NN

  6/2026/1316/HOUSE Submitted 27 Jul 2026 75m away

  83% historically approved · decision due ~22 Sep

  Erection of part single and part two storey rear extension with alterations to openings on rear elevation

  Awaiting decision Householder Extension
  Domestic

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

  6/2026/0248/FULL Submitted 12 Feb 2026 112m away

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

  Granted Full applications

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

  6/2024/2115/COND Submitted 1 Nov 2024 147m 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

  Decided Conditions Trees

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

  6/2024/1861/TPO Submitted 27 Sep 2024 147m away

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

  Granted Trees

• 125 Knella Road Welwyn Garden City AL7 3NA

  6/2026/0597/HOUSE Submitted 7 Apr 2026 177m away

  Erection of a single storey side extension

  Granted Householder Extension
  Small domestic

• Unit 1 Swallow Court Swallowfields Welwyn Garden City AL7 1SB

  6/2026/0401/FULL Submitted 4 Mar 2026 182m away

  Change of use to incorporate use classes E, F1 and F2

  Withdrawn Full applications

• 6/2026/1385/PN14 Granted

  Car Park at Bishops Square Hatfield Business Park Hatfield AL10 9NE

  Prior approval for demolition of existing carpark building

  5 Aug 2026 Prior approval
• 6/2026/1125/PN8 Granted

  39 The Ridgeway Northaw EN6 4BD

  Prior approval for the erection of a single storey rear extensions measuring 8m in depth, 4m in height and 3m to the eaves

  29 Jun 2026 Prior approval
• 6/2026/1217/PN8 Refused

  48 Great Ganett Welwyn Garden City AL7 3DE

  Prior approval for a single storey rear extension measuring 4m in depth, 3m to the eaves and the maximum height of 3m

  13 Jul 2026 Prior approval
• 6/2026/1411/PN15 Awaiting decision

  Grass verge along Bessemer Road Bessemer Road Welwyn Garden City AL7 1ET

  Prior approval for the installation of 20m high Taurus Street pole with 9no antennas, 6no RRH and equipment housing, together with associated ancillary development

  10 Aug 2026 Prior approval
• 6/2026/1399/PN8 Awaiting decision

  1 High Dells Hatfield AL10 9JD

  Prior approval for a single storey rear extension measuring 4.50m in depth, 2.58m to the eaves and the maximum height of 2.75m

  7 Aug 2026 Prior approval