5 Mymms Drive Brookmans Park AL9 7AE

1. 14 Mar 2023

   Received by Welwyn Hatfield

2. 16 May 2023

   Decision issued: Granted

3. 22 Sep 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 16 May 2023, 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.

• 5 Mymms Drive Hatfield AL9 7AE

  6/2023/0147/HOUSE Submitted 20 Jan 2023 50 yards away

  Erection of boundary wall and brick piers, including metal railings and gates

  Granted Householder
  Small domestic

• 9 Mymms Drive Brookmans Park Hertfordshire AL9 7AE

  6/2024/1339/COND Submitted 12 Jul 2024 50 yards away

  Submission of details pursuant of conditions 1 (sustainable design statement), 3 (crown roof detail), 4 (materials), 5 (landscape plan) on planning permission 6/2023/2547/FULL

  Split decision Conditions 9 docs

• 9 Mymms Drive Brookmans Park AL9 7AE

  6/2024/1699/COND Submitted 4 Sep 2024 50 yards away

  Submission of details pursuant to condition number 1 (Sustainable Design Statement) on planning permission 6/2023/2547/FULL

  Granted Conditions 8 docs

• 57 Great North Road Brookmans Park AL9 6LA

  6/2024/1190/FULL Submitted 26 Jun 2024 50 yards away

  Erection of replacement dwelling and associated landscaping following demolition of existing dwelling

  Granted Full applications Demolition
  Domestic

• 57 Great North Road Brookmans Park AL9 6LA

  6/2026/0703/HOUSE Submitted 20 Apr 2026 50 yards away

  Erection of part double part single storey rear extension, single storey front porch extension, raising of roof and eaves to accommodate loft conversion, alterations to materials and fenestration, erection of front boundary wall and gates

  Granted Householder Extension Loft or dormer +1
  Small domestic

• Land To Rear of Mymms Drive Brookmans Park AL9 7AF

  6/2025/1610/FULL Submitted 28 Jul 2025 150 yards away

  Erection of two stables following demolition of existing stables

  Granted Full applications Demolition

• 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
• 6/2026/1370/LAWP Granted

  17-17A Mill Lane Welwyn AL6 9EU

  Certificate of lawfulness for the change of use of offices to 3 x 2 bedroom flats

  Received 3 Aug, published by the council 15 Aug 2026 Lawful development
• 6/2026/1218/LAWP Granted

  43 Great Ley Welwyn Garden City AL7 4TJ

  Certificate of lawfulness for rear dormer roof extension to form a loft conversion

  Received 13 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1559/LAWP Awaiting decision

  28 Pleasant Rise Hatfield AL9 5DU

  Certificate of lawfulness for construction of a new detached, single-storey garden room/summerhouse within an existing rear garden

  Received 8 Sep, published by the council 22 Sep 2026 Lawful development