57 Broadwater Crescent Welwyn Garden City AL7 3TS

1. 18 Jun 2026

   Received by Welwyn Hatfield

2. 24 Jul 2026

   Added to PlanIndex

3. 13 Aug 2026

   Decision issued: Granted

Welwyn Hatfield granted permission on 13 August 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 70 Broadwater Crescent Welwyn Garden City AL7 3TU

  6/2021/1716/EM Submitted 28 May 2021 76m away

  Single storey rear extension, front porch extension, internal alterations to create open plan living space and new windows added throughout the property

  Granted Extension Windows or glazing
  Small domestic

• 70 Broadwater Crescent Welwyn Garden City AL7 3TU

  6/2021/1138/LAWP Submitted 7 Apr 2021 76m away

  Certificate of lawfulness for the erection of a single storey rear extension with 2 x rooflights and minor alterations to the existing porch

  Granted Lawful development Extension Loft or dormer
  Small domestic

• 18 Creswick Court Welwyn Garden City AL7 3SX

  6/2024/1315/EM Submitted 10 Jul 2024 95m away

  Erection of single storey rear extension

  Granted Extension
  Small domestic

• 18 Creswick Court Welwyn Garden City AL7 3SX

  6/2024/0999/EM Submitted 29 May 2024 95m away

  1 x EV Charger to be installed on driveway in front of the property

  Granted

• 8 The Reeds Welwyn Garden City AL7 3BN

  6/2022/2608/HOUSE Submitted 15 Nov 2022 164m away

  Erection of single storey rear extension following demolition of conservatory

  Granted Householder Extension Demolition
  Small domestic

• 20 Longcroft Gardens Welwyn Garden City AL8 6JR

  6/2024/1749/TC Submitted 10 Sep 2024 180m away

  Group of hawthorn to remove to ground level.

  Granted Trees 1 doc

• 6/2026/1370/LAWP Granted

  17-17A Mill Lane Welwyn AL6 9EU

  Certificate of lawfulness for the change of use of offices to 3 x 2 bedroom flats

  Received 3 Aug, published by the council 15 Aug 2026 Lawful development
• 6/2026/1218/LAWP Granted

  43 Great Ley Welwyn Garden City AL7 4TJ

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

  Received 13 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1250/LAWP Granted

  40 Dellsome Lane Welham Green Hatfield AL9 7ND

  Certificate of lawfulness for Class A - Larger single storey rear extension (previously subject to prior approval application ref: 6/25/1851/PN8), Class B - Roof extension/hip to gable conversion, Class C - Other alterations to roof

  Received 16 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1210/LAWE Refused

  9 Flamingo Close Hatfield AL10 9LU

  Certificate of lawfulness for the existing use of the property as a HMO (Use Class C4) in continuous use for over 10 years

  Received 10 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/0735/LAWE Refused

  1 Northaw Place Coopers Lane Northaw Potters Bar EN6 4NQ

  Certificate of lawfulness for the existing use of the land as residential garden land ancillary to the dwellinghouse continuously since 2012

  Received 27 Apr, published by the council 24 Jul 2026 Lawful development