55 High Dells Hatfield AL10 9JD

1. 5 May 2026

   Received by Welwyn Hatfield

2. 22 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. 14 Aug 2026

   Decision issued: Granted

Welwyn Hatfield granted permission on 14 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.

• 10 High Dells Hatfield AL10 9HU

  6/2023/0559/PN8 Submitted 13 Mar 2023 50 yards away

  Prior approval for the erection of a single storey rear extension measuring 4.6m in depth, 2.7m in height and 2.5m to the eaves

  Granted Prior approval Extension
  Small domestic

• 24 High Dells Hatfield Hertfordshire AL10 9HU

  6/2023/0486/LAWE Submitted 3 Mar 2023 100 yards away

  Certificate of lawfulness for the existing use of HMO

  Granted Lawful development

• 42 High Dells Hatfield AL10 9HU

  6/2024/1868/LAWE Submitted 30 Sep 2024 100 yards away

  Certificate of lawfulness for the existing use of HMO

  Granted Lawful development

• 15 High Dells Hatfield AL10 9JD

  6/2022/2681/HOUSE Submitted 24 Nov 2022 200 yards away

  Erection of first floor rear extension

  Refused Householder Extension
  Domestic

• 64 Bishops Rise Hatfield Hertfordshire AL10 9HH

  6/2022/2783/PN8 Submitted 8 Dec 2022 250 yards away

  Prior approval for flat roof single storey rear extension measuring 6m in depth, 3m in height and 2.4m to the eaves

  Granted Prior approval Extension
  Small domestic

• 72 Bishops Rise Hatfield Hertfordshire AL10 9HH

  6/2023/0656/LAWP Submitted 23 Mar 2023 250 yards away

  Certificate of lawfulness for a proposed rear extension, following the demolition of existing conservatory

  Granted Lawful development Extension Demolition

• 6/2026/1287/LAWE Refused

  Woodhurst Farm, Stables Cattlegate Road Northaw Potters Bar EN2 8AU

  Certificate of Lawfulness for existing use of a former agricultural building (Barn) as a self- contained single residential dwelling house (Use Class C3) following its conversion and continuous occupation for a period in excess of 10 years prior to the date of this application

  Received 22 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1306/LAWP Granted

  184 Unit 4 St Albans Road West Hatfield AL10 0TF

  Certificate of lawfulness for the change of use of the front office portion of Unit 4 to a daycare/crèche facility, to include an internal mezzanine, within Use Class E.

  Received 27 Jul, published by the council 22 Aug 2026 Lawful development
• 6/2026/1328/LAWP Granted

  41 Great North Road Welwyn Garden City AL8 7TJ

  Certificate of lawfulness for a proposed hip to gable loft conversion with rear facing dormer and single storey side extension, plus insertion of rooflight to front elevation

  Received 29 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1288/LAWE Granted

  1 The Limberlost Welwyn AL6 9TS

  Certificate of existing lawfulness for a single storey extension

  Received 22 Jul, published by the council 22 Aug 2026 Lawful development
• 6/2026/1297/LAWE Granted

  White Lodge Farm The Bellbrook Bulls Lane Hatfield AL9 7AZ

  Certificate of lawfulness in relation to existing gate and fencing

  Received 23 Jul, published by the council 9 Aug 2026 Lawful development