Former British Aerospace Gatehouse Immediately South of Staff Mess Comet Way Hatfield AL10 0XR

1. 13 Apr 2026

   Received by Welwyn Hatfield

2. 11 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 20 Jul 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.

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.

• Hatfield Police Station Comet Way Hatfield AL10 9SJ

  6/2026/0285/LB Submitted 19 Feb 2026 100 yards away

  Installation of various illuminated signage and logos mounted on standalone totems and building façade

  Granted Heritage and listed buildings 1 doc

• Hertfordshire Constabulary Central Area Headquarters And Hatfield Police Station Comet Way Hatfield AL10 9SJ

  6/2026/0617/TPO Submitted 8 Apr 2026 150 yards away

  T9 Weeping willow to remove limb with large hollow at approximately 2m SE side. T10 Weeping willow to remove large central limb growing towards police station. Covered by TPO 701 (2017)

  Granted Trees

• Hertfordshire Constabulary Central Area Headquarters And Hatfield Police Station Comet Way Hatfield AL10 9SJ

  6/2023/0330/TPO Submitted 10 Feb 2023 150 yards away

  T9-T10 Willow x 2. Re pollard back to historic points. Trees covered by TPO 701 (2017)

  Granted Trees

• 12 Harpsfield Broadway Hatfield AL10 9TF

  6/2022/1444/FULL Submitted 21 Jun 2022 150 yards away

  Erection of part two, part three storey rear extension with mansard roof and conversion to 8 flats comprising 6 x 2-bed and 2 x studio

  Granted Full applications New dwelling Extension +1
  Several homes

• 12 Harpsfield Broadway Hatfield AL10 9TF

  6/2024/2159/COND Submitted 8 Nov 2024 150 yards away

  Submission of details pursuant to conditions 1 (Construction Management Plan) 2 (Noise due to transport sources) 3 (noise from nearby commercial activities) 4 (parking of cycles) 5 (refuse bin and recycling materials storage bins) 6 (heat pump hot water cylinders) on planning permission 6/2022/1444/FULL

  Split decision Conditions

• 9 Harpsfield Broadway Hatfield AL10 9TF

  6/2026/0596/ADV Submitted 7 Apr 2026 150 yards away

  Advertisement consent for the retention of one internally illuminated fascia sign and one internally illuminated projecting box sign

  Granted Advertising

• 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