73 Mymms Drive Brookmans Park AL9 7AA

This site has had 2 applications since 2026: 0 approved, 1 refused.

• 6/2026/0525/FULL Refused

  73 Mymms Drive Brookmans Park AL9 7AA

  Erection of a new dwelling following demolition of the existing building

  Decided 21 Aug 2026 Full applications

1. 7 Sep 2026

   Received by Welwyn Hatfield

2. 14 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 22 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 9 November 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, against a statutory target of eight weeks. Over the last year Welwyn Hatfield decided full applications in a median of 102 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 73 Mymms Drive Brookmans Park AL9 7AA

  6/2026/0525/FULL Submitted 23 Mar 2026 50 yards away

  Erection of a new dwelling following demolition of the existing building

  Refused Full applications New dwelling Demolition
  Domestic

• 9 Calder Avenue Brookmans Park Hatfield AL9 7AH

  6/2021/1064/HOUSE Submitted 31 Mar 2021 100 yards away

  Erection of part single, part two storey front extension; two storey side extension; part single, part two storey rear extension; garage conversion; enlargement of roof; insertion of side and rear rooflights; and front facade alterations.

  Granted Householder Extension Loft or dormer
  Small domestic

• 6 Calder Avenue Brookmans Park AL9 7AQ

  6/2021/1496/HOUSE Submitted 11 May 2021 150 yards away

  Erection of single storey side extension, garage, front canopy and first floor rear extension.

  Granted Householder Extension
  Small domestic

• 6 Calder Avenue Brookmans Park Hertfordshire AL9 7AQ

  6/2023/0273/HOUSE Submitted 3 Feb 2023 150 yards away

  Erection of a first floor rear extension, single storey side and rear extension, front canopy, alteration to fenestration, conversion of garage to habitable space and erection of a detached garage

  Granted Householder Extension Windows or glazing
  Small domestic

• Oakview 103 Brookmans Avenue Brookmans Park AL9 7QG

  6/2026/0641/TPO Submitted 10 Apr 2026 150 yards away

  T1 – Oak – height 15m – spread 12m – w3w aims.dime.into Requested works: 1m Reduction of entire tree, removing all deadwood. Reasons for works: Tree is in proximity to public footpath, used by local school children. Light and space is also obstructed to front of property TPO 972 (2022) T1

  Granted Trees

• 104 Brookmans Avenue Hatfield AL9 7QQ

  6/2023/0096/FULL Submitted 16 Jan 2023 150 yards away

  Erection of a dwelling following demolition of existing dwelling with alterations to boundary treatment including driveway, gate and piers.

  Granted Full applications New dwelling Demolition
  Domestic

• 6/2026/1152/FULL Refused

  31A Howardsgate Welwyn Garden City AL8 6AP

  Erection of an additional storey at second floor to accommodate 3 residential units including alterations to internal access

  Received 2 Jul, published by the council 24 Jul 2026 Full applications
• 6/2026/1028/FULL Granted

  Stellantis & You Hatfield 1 Great North Road Hatfield AL9 5JA

  Alterations to external elevations including painting of existing cladding & shopfronts, installation of new signage and alterations to vehicle parking layout

  Received 11 Jun, published by the council 24 Jul 2026 Full applications
• 6/2025/1856/FULL Refused

  Brookmans Park Golf Club Golf Club Road Brookmans Park AL9 7AT

  Erection of a temporary tennis court air dome

  Received 1 Sep, published by the council 24 Jul 2026 Full applications
• 6/2026/0865/FULL Granted

  Land Outside 92 Town Centre Hatfield AL10 0JW

  Installation of 1 no. new communications Kiosk with integrated defibrillator and advertising display

  Received 3 Jun, published by the council 24 Jul 2026 Full applications
• 6/2026/0870/FULL Granted

  Land Outside 54 Howardsgate Welwyn Garden City AL8 6BP

  Installation of 1 no. new communications Kiosk with integrated defibrillator and advertising display

  Received 18 May, published by the council 24 Jul 2026 Full applications