41 Great North Road Welwyn Garden City AL8 7TJ

1. 29 Jul 2026

   Received by Welwyn Hatfield

2. 30 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 9 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 24 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Welwyn Hatfield took a median of 58 days over the applications it decided in the last year.

This application is with Welwyn Hatfield for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

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

• 41 Great North Road Welwyn Garden City AL8 7TJ

  6/2026/0900/LAWP Submitted 20 May 2026 0m away

  Certificate of lawfulness for the erection of a hip to gable roof extension, formation of rear dormer, erection of single storey side extension and insertion of rooflight to front elevation

  Refused Lawful development Extension Loft or dormer
  Small domestic

• 40 Great North Road Welwyn Garden City AL8 7TJ

  6/2021/1215/HOUSE Submitted 14 Apr 2021 11m away

  Erection of two storey side extension with a single storey front garage.

  Granted Householder Extension
  Small domestic

• Verge in highway on Great North Road Welwyn Garden City AL8 7TJ

  6/2026/0698/COND Submitted 20 Apr 2026 70m away

  Submission of details pursuant to Condition 1 (Construction Traffic Management Plan) on planning permission 6/2025/1893/FULL

  Refused Conditions

• 2 New Road Welwyn Garden City AL8 7TX

  6/2019/2568/COND Submitted 14 Oct 2019 135m away

  Submission of details pursuant to condition 4 (Site Characterisation, Submission and Implementation of Remediation Scheme, Unexpected Contamination and Monitoring and Maintenance) on planning permission 6/2015/1983/FULL

  Decided Conditions

• 2 New Road Welwyn Garden City AL8 7TX

  6/2019/2588/COND Submitted 15 Oct 2019 141m away

  Submission of details pursuant to condition 4 (remediation) on planning permission 6/2015/1984/FULL

  Decided Conditions

• 28 Great North Road Welwyn Garden City AL8 7TJ

  6/2021/1019/HOUSE Submitted 26 Mar 2021 152m away

  Two new dormers on the roof and external elevational treatments

  Withdrawn Householder Loft or dormer
  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