33 Birchwood Avenue Hatfield AL10 0PR

1. 15 Jun 2021

   Received by Welwyn Hatfield

2. 16 Jun 2021

   Validated

   Checked as complete and ready for consideration.

3. 9 Aug 2021

   Decision issued: Granted

4. 9 Aug 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 9 August 2021, 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.

• 82 Birchwood Avenue Hatfield AL10 0PS

  6/2026/0710/HOUSE Submitted 21 Apr 2026 50 yards away

  Erection of single storey rear extension

  Granted Householder Extension
  Small domestic

• 80 Birchwood Avenue Hatfield AL10 0PS

  6/2023/0458/HOUSE Submitted 28 Feb 2023 50 yards away

  Replacement of pitched polycarbonate conservatory roof with flat roof

  Granted Householder Extension
  Small domestic

• 96 Birchwood Avenue Hatfield AL10 0PS

  6/2026/0558/HOUSE Submitted 26 Mar 2026 100 yards away

  Erection of a part single-storey, part two storey side extension and a single storey rear extension, including associated internal reconfiguration, removal of chimney, and alterations to fenestration following demolition of outbuilding

  Granted Householder Extension Demolition +1
  Small domestic

• 29 Heathcote Avenue Hatfield AL10 0RQ

  6/2026/0632/PN8 Submitted 9 Apr 2026 100 yards away

  Prior approval for a single storey rear extension which will measure 4m in depth, 3m to the eaves and the maximum height of 2.69m

  Granted Prior approval Extension
  Small domestic

• 65 Heathcote Avenue Hatfield AL10 0RQ

  6/2023/0410/HOUSE Submitted 22 Feb 2023 150 yards away

  Erection of single storey rear extension, front porch extension, installation of one front rooflight and a rear dormer to facilitate the conversion of loft to habitable space

  Refused Householder Extension Loft or dormer
  Small domestic

• 92 Chelwood Avenue Hatfield AL10 0RE

  6/2021/1642/COND Submitted 23 May 2021 150 yards away

  Submission of details pursuant to condition 1 (materials) on planning permission 6/2021/0742/HOUSE

  Granted Conditions
  Major scheme

• 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