9 Flamingo Close Hatfield AL10 9LU

1. 10 Jul 2026

   Received by Welwyn Hatfield

2. 16 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 9 Aug 2026

   Added to PlanIndex

4. 25 Aug 2026

   Status changed to Under Consideration

   Previously Under Consultation.

5. Decision

   Awaiting decision

   Decision expected by 10 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

• 13 Flamingo Close Hatfield AL10 9LU

  6/2025/1850/FULL Submitted 29 Aug 2025 45m away

  Change of Use from Use Class C3 (dwellinghouse) to a sui generis HMO comprising 7 bedrooms with ensuites, 6 kitchenettes and 4 parking spaces with landscaping changes

  Granted Full applications
  Domestic

• 13 Flamingo Close Hatfield AL10 9LU

  6/2026/1079/COND Submitted 22 Jun 2026 45m away

  Submission of details pursuant to condition 1 (Landscaping) on planning permission 6/2025/1850/FULL

  Granted Conditions 1 doc

• 19 Cunningham Avenue Hatfield AL10 9LR

  6/2026/1132/LAWE Submitted 30 Jun 2026 47m away

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

  Refused Lawful development

• 16 Nimrod Drive Hatfield AL10 9LS

  6/2022/2774/LAWP Submitted 6 Dec 2022 75m away

  Certificate of lawfulness for the erection of a porch

  Granted Lawful development Extension
  Small domestic

• 16 Nimrod Drive Hatfield AL10 9LS

  6/2022/2773/HOUSE Submitted 6 Dec 2022 75m away

  Erection of two storey rear extension

  Granted Householder Extension
  Domestic

• 2 Nimrod Drive Hatfield AL10 9LS

  6/2022/2222/HOUSE Submitted 26 Sep 2022 79m away

  Erection of a single-storey rear extension and garage conversion and rear extension

  Granted Householder Extension
  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