50 Great Ley Welwyn Garden City AL7 4TL

1. 25 Jun 2021

   Received by Welwyn Hatfield

2. 3 Aug 2021

   Decision issued: Refused

3. 30 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.

• 57 Hollybush Lane Welwyn Garden City AL7 4JH

  6/2021/2201/HOUSE Submitted 21 Jul 2021 100 yards away

  Erection of single storey rear extension

  Refused Householder Extension
  Small domestic

• 43 Great Ley Welwyn Garden City AL7 4TJ

  6/2026/1218/LAWP Submitted 13 Jul 2026 150 yards away

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

  Granted Lawful development Extension Loft or dormer

• 3 Old Dairy Yard Welwyn Garden City AL7 4BY

  6/2024/0933/HOUSE Submitted 20 May 2024 200 yards away

  Installation of air source heat pump

  Granted Householder
  Domestic

• 4 Old Dairy Yard Welwyn Garden City AL7 4BY

  6/2026/0337/HOUSE Submitted 23 Feb 2026 200 yards away

  Erection of first floor rear extension, loft conversion with dormers to front and rear and insertion of roof lights

  Granted Householder Extension Loft or dormer
  Domestic

• 14 Four Acres Welwyn Garden City AL7 4NW

  6/2020/1680/LAWP Submitted 13 Jul 2020 250 yards away

  Certificate of Lawfulness for erection of summer house in rear garden

  Refused Lawful development

• 60 Sir John Newsom Way Welwyn Garden City AL7 4FL

  6/2025/0628/FULL Submitted 1 Apr 2025 250 yards away

  Erection of a detached two-storey building compromising 2 x 2 bedroom flats

  Withdrawn Full applications New dwelling

• 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