312 Knightsfield Welwyn Garden City AL8 7NQ

1. 22 Jan 2021

   Received by Welwyn Hatfield

2. 23 Feb 2021

   Validated

   Checked as complete and ready for consideration.

3. 24 May 2021

   Decision issued: Refused

4. 9 Aug 2026

   Added to PlanIndex

Welwyn Hatfield refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 310 Knightsfield Welwyn Garden City AL8 7NQ

  6/2024/1844/HOUSE Submitted 25 Sep 2024 50 yards away

  Erection of single storey front, side and rear extensions following the demolition of the existing conservatory, raise in garage roof height to facilitate its conversion to habitable space, and fenestration alterations

  Granted Householder Extension Demolition +1
  Small domestic

• 307 Knightsfield Welwyn Garden City AL8 7NJ

  6/2026/0917/HOUSE Submitted 22 May 2026 50 yards away

  Erection of a single storey rear extension and covered veranda area and alteration to fenestration.

  Granted Householder Extension Windows or glazing
  Small domestic

• 307 Knightsfield Welwyn Garden City AL8 7NJ

  6/2026/0836/EM Submitted 12 May 2026 50 yards away

  Erection of single storey rear extension with roof lanterns, covered verandah area, installation of roof lantern to existing side roof and replacement window to rear

  Granted Extension Windows or glazing
  Small domestic

• 315 Knightsfield Welwyn Garden City AL8 7NJ

  6/2021/1522/EMH Submitted 12 May 2021 100 yards away

  Installation of solar panels on front elevation of roof to supply self-generated electricity for the household.

  Refused Householder
  Domestic

• 315 Knightsfield Welwyn Garden City AL8 7NJ

  6/2021/1389/HOUSE Submitted 30 Apr 2021 100 yards away

  Installation of solar panels to the front elevation of the property

  Refused Householder
  Domestic

• Knightsfield Street Works Knightsfield Welwyn Garden City AL8 7NQ

  6/2022/2659/PN15 Submitted 22 Nov 2022 100 yards away

  Prior approval for the installation of H3G 16m street pole and additional equipment cabinets

  Refused Prior approval

• 6/2026/1052/FULL Granted

  Unit 3 Woodside Lane Hatfield AL9 6DE

  Retention of an extension to the existing building and the erection of a rear extension following demolition of existing buildings (part retrospective)

  Received 17 Jun, published by the council 24 Jul 2026 Full applications
• 6/2026/1264/FULL Granted

  53 Brookmans Avenue Brookmans Park AL9 7QG

  Erection of dwelling with boundary wall and gates following demolition of existing property

  Received 17 Jul, published by the council 15 Aug 2026 Full applications
• 6/2026/1337/FULL Granted

  Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA

  Relocation of the Transfusion Medicine Vet Pod and associated parking, landscaping and associated works

  Received 30 Jul, published by the council 9 Aug 2026 Full applications
• 6/2026/1689/MAJ Awaiting decision

  Howlands House Howlands Welwyn Garden City AL7 4QJ

  Erection of a single 3 and 4-storey building comprising 44 temporary accommodation homes, staff office and laundry facilities, children's play space, cycle and vehicular parking, associated servicing, plant enclosure, substation, landscaping and external works.

  Received 25 Sep, published by the council 1 Oct 2026 Full applications
• 6/2026/0952/FULL Granted

  18 Fallowfield Welwyn Garden City AL7 1EE

  Retrospective application for change of use from amenity land to residential land to form part hardstanding and part garden land at the front of the property and installation of a drop kerb

  Received 1 Jun, published by the council 24 Jul 2026 Full applications