9 Longmore Gardens Welwyn Garden City AL7 3NH

1. 8 Apr 2021

   Received by Welwyn Hatfield

2. 19 May 2021

   Validated

   Checked as complete and ready for consideration.

3. 12 Jul 2021

   Decision issued: Refused

4. 9 Aug 2026

   Added to PlanIndex

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

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

• 93 Salisbury Road Welwyn Garden City AL7 3RY

  6/2026/1360/VAR Submitted 3 Aug 2026 136m away

  90% historically approved · decision due ~6 Oct

  Variation of condition 2 (approved plans) on planning permission 6/2025/2622/HOUSE

  Awaiting decision Amendments
  Major scheme

• 125 Knella Road Welwyn Garden City AL7 3NA

  6/2026/0597/HOUSE Submitted 7 Apr 2026 143m away

  Erection of a single storey side extension

  Granted Householder Extension
  Small domestic

• 96 Salisbury Road Welwyn Garden City AL7 3SB

  6/2024/1793/PN8 Submitted 17 Sep 2024 183m away

  Prior Approval for the erection of a single storey rear extension measuring 5m in depth, 3.20m in height and 2.82m to the eaves

  Granted Prior approval Extension
  Small domestic

• 11 Cranborne Gardens Welwyn Garden City AL7 3NF

  6/2021/1958/EM Submitted 28 Jun 2021 190m away

  Retention of existing hardstanding, along with creation of hedgerow and planting

  Granted Trees

• 178 Knella Road Welwyn Garden City AL7 3NN

  6/2026/1316/HOUSE Submitted 27 Jul 2026 206m away

  83% historically approved · decision due ~22 Sep

  Erection of part single and part two storey rear extension with alterations to openings on rear elevation

  Awaiting decision Householder Extension
  Domestic

• 51 Salisbury Road Welwyn Garden City AL7 3RU

  6/2024/1727/EM Submitted 9 Sep 2024 208m away

  Roof replacement. Tiles will be replaced in same colour and in keeping with the current style

  Granted Roofing

• 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