2a Mardley Hill Welwyn AL6 0TB

1. 9 Sep 2024

   Received by Welwyn Hatfield

2. 10 Sep 2024

   Validated

   Checked as complete and ready for consideration.

3. 10 Dec 2024

   Decision issued: Granted

4. 22 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

Tree applications cover work to protected trees: those under a tree preservation order need consent for pruning or felling, and trees in a conservation area need six weeks written notice before work starts. The council assesses the amenity value of the tree and can refuse consent, approve it with conditions, or in conservation areas make a preservation order in response.

More on trees applications in our guide

• 10 Briary Wood End Welwyn AL6 0TD

  6/2024/1812/HOUSE Submitted 19 Sep 2024 25m away

  Erection of a front and rear extension with gabion retaining walls formed to form enlarged driveway (part retrospective)

  Granted Householder Extension
  Domestic

• The North Star Nursery 82 Great North Road Oaklands AL6 0TA

  6/2026/0016/COND Submitted 5 Jan 2026 62m away

  Submission of details pursuant to condition 1 (Biodiversity Gain Plan), condition 2 (Habitat Management Monitoring Plan), condition 3 (Landscaping) and condition 4 (Material samples of proposed fenestration) on planning permission 6/2025/0781/FULL

  Granted Conditions Windows or glazing

• The North Star 82 Great North Road Welwyn AL6 0TA

  6/2026/0025/VAR Submitted 7 Jan 2026 63m away

  Variation of condition 15 (amendments to the approved scheme) on planning permission 6/2025/0781/FULL

  Granted Amendments

• The North Star 82 Great North Road Welwyn AL6 0TA

  6/2026/1067/FULL Submitted 19 Jun 2026 67m away

  81% historically approved · decision due ~28 Aug

  Use of an existing flat roof as a first-floor teaching terrace and installation of an external fire escape staircase

  Awaiting decision Full applications

• Brambles Briary Wood End Welwyn AL6 0TD

  6/2026/0825/TPO Submitted 12 May 2026 75m away

  TPO 800 T1 - Chestnut tree - crown reduce by approx 4-5m - tree is multi stem and we have recently removed the whole crown on one stem due to being completely dead. Client is worried about the balancing weight now on the other stem. Please see attached photos.

  Granted Trees

• 14 Lower Mardley Hill Welwyn AL6 0SQ

  6/2022/2500/TPO Submitted 1 Nov 2022 109m away

  Remove sweet chestnut T6, T7, T8, T9, T10, T11, T12, T13 and replace with oak. Remove scots pine T14, T15, T16 and replace with oak. All trees covered by TPO 879 (2022) & 203 (1995).

  Refused Trees

• 6/2026/1095/TPO Granted

  31 Parkside Welwyn AL6 9DQ

  T1 Goat Willow Pollard back to previous trimming points which is approx 3-4m off T2 Cedar Crown reduction by 2-3m approx back to previous pruning points

  24 Jun 2026 Trees
• 6/2026/1531/TPO Awaiting decision

  37 The Ridgeway Cuffley EN6 4BB

  T1 English Oak (Quercus robur) ref T316 fell to ground level

  2 Sep 2026 Trees
• 6/2026/1260/EMT Granted

  77 The Commons Welwyn Garden City AL7 4RZ

  Fell 1 dead Beech tree in rear garden.

  17 Jul 2026 Trees
• 6/2026/1271/TPO Granted

  33 Oaklands Rise Welwyn AL6 0RN

  Removal of dead hornbeam tree. (covered by TPO 673 (2017))

  20 Jul 2026 Trees
• 6/2026/0899/EMT Granted

  10 The Commons Welwyn Garden City AL7 4RP

  4 x conifer reduce to 6ft (1.8m) height. 3 x self set ash, fell & poison. 2 x self set sycamore, fell & poison

  20 May 2026 Trees