20 Mardley Heights Welwyn AL6 0SX

1. 1 Oct 2024

   Received by Welwyn Hatfield

2. 10 Dec 2024

   Decision issued: Refused

3. 22 Aug 2026

   Added to PlanIndex

Welwyn Hatfield refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

Applications for works to trees cover protected trees: consent under a tree preservation order, or six weeks notice for trees in a conservation area. More in our guide to planning application types.

• 37 Mardley Avenue Welwyn AL6 0TU

  6/2025/2248/FULL Submitted 23 Oct 2025 50 yards away

  Erection of a single chalet dwelling

  Refused Full applications
  Domestic

• 5 Mardley Heights Welwyn AL6 0TX

  6/2021/1299/TPO Submitted 22 Apr 2021 50 yards away

  Prune T1 Oak located at the front of property according to the following specifications: • Crown reduction by removing up to 2 meters growth pruning back to suitable growth points to leave a balanced crown Crown clean removing any damaged, diseased and deadwood Prune G1 Various Species, Beech, Berberis and flowering Current located at the front garden according to the following specifications: • Prune back hard garden side back to mainstem of Beech and following line down other species garden side Prune T3 Pine located at the front of property according to the following specifications: • Crown reduction by removing 1.5 meters growth in height pruning back to suitable growth points reduce lateral branches to leave a balanced crown Prune G3 Mixed Hegde located at the Left of driveway according to the following specifications: • Trim back sides and top to leave a tidy formative shaped hedge trimming back hard form driveway without cuasing possible future browning off Prune T1 Beech located at the left rear of house according to the following specifications: • Crown reduction by removing up to 2.5 meters growth pruning back to suitable growth points to leave a balanced crown bring down height enough but not too much as to keep privacy Crown clean removing any damaged, diseased and deadwood

  Granted Trees

• 8 Mardley Heights Welwyn AL6 0TX

  6/2024/1922/TPO Submitted 8 Oct 2024 50 yards away

  Oak tree to reduce by 25% back to previous cuts (TPO 641 (2017))

  Granted Trees

• 10 Mardley Heights Welwyn AL6 0TX

  6/2026/1440/TPO Submitted 17 Aug 2026 100 yards away

  4 x English Oak (Quercus robur), identified as T1, T2, T3 and T4 on the accompanying sketch plan, protected under TPO 641 (2017). Proposed works: Crown reduction of up to 20%; crown thinning of up to 20%; crown lift to approximately 3–4m; removal of epicormic trunkal growth; selective pruning to provide approximately 2m clearance from the dwelling and approximately 1m clearance from overhead lines. Reason for works: Continued periodic arboricultural management of this established group of Oaks, maintaining appropriate clearance from the dwelling and overhead services whilst retaining a balanced, natural canopy and the amenity value of the trees.

  Granted Trees
  Domestic

• 35 Mardley Hill Welwyn AL6 0TT

  6/2021/1099/HOUSE Submitted 6 Apr 2021 100 yards away

  Replacement garage

  Granted Householder
  Domestic

• 31 Mardley Hill Welwyn AL6 0TT

  6/2024/1990/TPO Submitted 16 Oct 2024 100 yards away

  13 x multi-stemmed beech (Fagus sylvatica) trees to the front of the property to be crown reduced by 20% and deadwood removed TPO 641 (2017) G6

  Granted Trees

• 6/2026/1523/EMT Granted

  5 Hitherway Welwyn Garden City AL8 7RG

  4 x Whitebeams to fell. No replanting

  Received 1 Sep, published by the council 13 Sep 2026 Trees
• 6/2026/1514/TPO Granted

  6A Wendover Drive Welwyn AL6 9LT

  T1 1 x Beech to remove in sections to ground level - Tree is almost dead and in poor condition T2 1 x Beech to reduce to clear property by 1.5m - Branches rubbing on property

  Received 27 Aug, published by the council 13 Sep 2026 Trees
• 6/2026/1300/EMT Granted

  1 Perrywood Walden Road Welwyn Garden City AL8 7PZ

  G1 - 2 x Beech and 3 x Hornbeams all hanging low over the footpath and road. Crown lift to 4m. T2 - Hornbeam growing very close to the building and low over the drive. To reduce back on building side by 1.5m and crown lift over the road to 4m.

  Received 23 Jul, published by the council 9 Aug 2026 Trees
• 6/2026/1495/EMT Granted

  2 Valley Road Welwyn Garden City AL8 7DF

  1 x Holly to reduce height by approx 3m height 1 x Lawson Cypress to reduce by approx 2.5m in height 1 x Plum to reduce height by approx 3m 1 x Apple to reduce lateral branches by approx 2m to reduce lateral branches over lawn 1 x Ash to reduce lateral branches over lawn area by approx 2m

  Received 25 Aug, published by the council 7 Sep 2026 Trees
• 6/2026/1497/TC Granted

  2 Valley Road Welwyn Garden City AL8 7DF

  1 x Holly to reduce height by approximately 3m height 1 x Lawson cypress to reduce by approximately 2.5m in height. 1 x Plum to reduce height by approximately 3m Above 3 are domination side of the garden, they are thick dense and evergreen. Reducing to allow more light into garden and control the size 1 x Apple to reduce lateral branches over lawn area by approximately 2m to reduce lateral branches over lawn to maintain size of tree & provide more space and light to lawn area 1 x Ash to reduce lateral branches over lawn area by approximately 2m to reduce lateral branches as now crossing half the garden and blocking light

  Received 25 Aug, published by the council 14 Sep 2026 Trees