20 Crawford Road Hatfield Hertfordshire AL10 0PG

1. 24 Nov 2022

   Received by Welwyn Hatfield

2. 11 Jan 2023

   Decision issued: Granted

3. 9 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 18 Crawford Road Hatfield AL10 0PG

  6/2019/2623/HOUSE Submitted 18 Oct 2019 7m away

  Erection of front porch and single storey rear extension following demolition of existing extension and garage with alterations to openings

  Granted Householder Extension Demolition 1 doc
  Small domestic

• 17 Crawford Road Hatfield AL10 0PF

  6/2023/0217/LAWP Submitted 30 Jan 2023 54m away

  Certificate of lawfulness for loft conversion with hip to gable to include rear dormer with juliet balcony, two front rooflights and side elevation window

  Granted Lawful development Loft or dormer Windows or glazing

• 31 Crawford Road Hatfield AL10 0PF

  6/2026/0677/HOUSE Submitted 16 Apr 2026 61m away

  Erection of front/side porch

  Granted Householder Extension
  Small domestic

• 31 Crawford Road Hatfield AL10 0PF

  6/2026/0576/PN8 Submitted 31 Mar 2026 61m away

  Prior approval for the erection of single storey rear extension measuring 3.65m in depth, 2.85m in height and 2.85m to the eaves

  Granted Prior approval Extension
  Small domestic

• 37 Crawford Road Hatfield AL10 0PF

  6/2024/1942/HOUSE Submitted 9 Oct 2024 74m away

  Erection of a single storey rear extension with roof lantern and part garage conversion which will be linked to the main dwelling

  Granted Householder Extension Windows or glazing
  Small domestic

• 37 Crawford Road Hatfield AL10 0PF

  6/2021/1901/HOUSE Submitted 22 Jun 2021 74m away

  Erection of a single storey rear extension with roof lantern and garage conversion including alterations to openings

  Granted Householder Extension Windows or glazing
  Small domestic

• 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

  27 Apr 2026 Lawful development
• 6/2026/1132/LAWE Refused

  19 Cunningham Avenue Hatfield AL10 9LR

  Certificate of existing lawfulness of a 5 person HMO since 6 April 2006

  30 Jun 2026 Lawful development
• 6/2026/1506/LAWP Awaiting decision

  Gosmore Brocket Road Welwyn Garden City AL8 7TT

  Erection of single storey side extensions x 2 and two storey rear extension

  27 Aug 2026 Lawful development
• 6/2026/1503/LAWE Awaiting decision

  27 Batterdale Hatfield AL9 5JG

  Certificate of lawfulness for the existing like-for-like replacement of damaged and aged windows on the front and rear elevations

  26 Aug 2026 Lawful development
• 6/2026/1044/LAWP Granted

  5 Peartree Court Welwyn Garden City AL7 3XN

  Certificate of lawfulness for the change of use from C3 (dwellinghouse) to C4 (HMO for up to 6 unrelated residents)

  15 Jun 2026 Lawful development