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12 Mardley Hill Welwyn AL6 0TN

6/2026/1205/TPOWORKS TO TREES WITH TREE PRESERVATION ORDERApproved

Approved on 7 September 2026

Council decision: GrantedDelegated (officer decision)

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

TPO 24 T2 - 1 x Oak to remove in sections to ground level. Tree is suppressed by neighbouring tree leaving a high canopy, blocking lights to neighbouring gardens as part of a larger group **a reduction doesnt seem suitable due to the existing canopy shape. Reducing the tree significantly will create a denser thicker poorly attached growth. Client happy to replant T3 - 1 x Beech tree to reduce overhanging lateral branches by approximately 2m. Reduce lateral overhang to no 16 as tree is too close to boundary and excessive overhang is leaving bird poo on kids play equipment

Received
10 July 2026
Decision level
Delegated (officer decision)
Ward
Welwyn East
  1. Received10 Jul
  2. Validated13 Jul
  3. Consult.16 Jul
  4. Target
  5. Decided7 Sep

Decided in 56 days (council typically 56)

About this application

This is a tree application at 12 Mardley Hill Welwyn AL6 0TN. Welwyn Hatfield has handled 884 applications of this type. This one was decided in 59 days, 3 days longer than Welwyn Hatfield's typical decision time. There has been 1 other application at this address. In the past year there have been 105 applications across Welwyn East. We hold 969 applications in total for the AL6 postcode area.

96% of trees applications at Welwyn Hatfield Borough Council were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
AL6 0TN
Application type
WORKS TO TREES WITH TREE PRESERVATION ORDER
Scale / size
Small
Parish
Welwyn

Planning application dates

Date validated
13 July 2026
Consultation expiry
16 July 2026
Consultation end
16 July 2026

Applicant and agent

Agent address
17 Crossway Welwyn Garden City AL8 7ED

Planning decision

Case officer
Ms Louise Wileman

Additional information

UPRN
100080989479

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (22)

flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Welwyn Hatfield

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