4 The Chase Welwyn AL6 0QT

1. 23 Apr 2026

   Received by Welwyn Hatfield

2. 29 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jun 2026

   Decision issued: Refused

4. 24 Jul 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.

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.

• 19 The Chase Welwyn AL6 0QT

  6/2021/1217/HOUSE Submitted 14 Apr 2021 0.1 miles away

  Erection of part-pitched and part-flat low level roof and single storey rear extension

  Granted Householder Extension
  Small domestic

• 21 The Chase Welwyn AL6 0QT

  6/2023/0237/HOUSE Submitted 31 Jan 2023 0.1 miles away

  Erection of single storey rear extension and garage conversion with new roof and 2 x rooflights. Plus alterations to openings to existing front and rear elevations, including replacing front window

  Granted Householder Extension Loft or dormer +2
  Small domestic

• 29 The Chase Welwyn AL6 0QT

  6/2021/0826/HOUSE Submitted 15 Mar 2021 0.1 miles away

  Erection of a part single storey, part two storey side and rear extension

  Granted Householder Extension 1 doc
  Small domestic

• 8 Jenning Wood Welwyn AL6 0SL

  6/2024/2028/TPO Submitted 21 Oct 2024 0.1 miles away

  T1 Hornbeam to crown reduce all round by 1-2 metres (TPO 39)

  Granted Trees

• The North Star 82 Great North Road Welwyn AL6 0TA

  6/2026/1067/FULL Submitted 19 Jun 2026 0.1 miles away

  80% historically approved · decision due ~28 Aug

  Use of an existing flat roof as a first-floor teaching terrace and installation of an external fire escape staircase in association with nursery use permitted under 6/2026/0025/VAR

  Awaiting decision Full applications

• The North Star 82 Great North Road Welwyn AL6 0TA

  6/2026/0025/VAR Submitted 7 Jan 2026 0.1 miles away

  Variation of condition 15 (amendments to the approved scheme) on planning permission 6/2025/0781/FULL

  Granted Amendments

• 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