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Planning Application: 6/2026/1440/TPO
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WORKS TO TREES WITH TREE PRESERVATION ORDER
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Under Consultation
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Ms Louise Wileman
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l.wileman@welhat.gov.uk
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10 Mardley Heights Welwyn AL6 0TX
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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.
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525169
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218032
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Welwyn
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100080989466
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17/08/2026
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18/08/2026
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28/09/2026
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Ms Katrine Cramer
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Ms Katrine Cramer
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10 Mardley Heights
Welwyn
AL6 0TX
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10 Mardley Heights
Welwyn
AL6 0TX
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| Description | Distance |
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| Minerals Safeguarding Area | 0.00 |
| Parish | 0.00 |
| Parish | 91.09 |
| Hertfordshire Ecological Network | 0.00 |
| Great Crested Newts DLL Risk Zones | 0.00 |
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Delegated
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| File | Description | Date Uploaded | |
|---|---|---|---|
| Application Form - Without Personal Information | |||
| File: ApplicationFormRedacted.pdf (243 kb) | Description: Applicationformredacted | Created Date: 17/08/2026 | |
| Plans | |||
| File: 10 mardley heights - tree location sketch plan - tpo 641_pdf.pdf (486 kb) | Description: Tree Location Sketch | Created Date: 17/08/2026 | |
| Photographs | |||
| File: 10 mardley heights - supporting tree photographs - tpo 641.pdf (413 kb) | Description: Supporting Tree Photographs | Created Date: 18/08/2026 | |
| Tree Survey | |||
| File: 10 mardley heights - arboricultural report - tpo 641.pdf (139 kb) | Description: Arboricultural Report | Created Date: 18/08/2026 | |
| Organisation | Name | Sent | Reply Due | Reply Received |
|---|---|---|---|---|
| Welwyn Hatfield Borough Council | Councillor Claire Hunt | 07/09/2026 | ||
| Welwyn Hatfield Borough Council | Councillor Claire Hunt | 07/09/2026 | ||
| Welwyn Hatfield Borough Council | Councillor Durk Reyner | 07/09/2026 | ||
| Welwyn Hatfield Borough Council | Councillor Durk Reyner | 07/09/2026 | ||
| Welwyn Hatfield Borough Council | Councillor Julie Cragg | 07/09/2026 | ||
| Welwyn Hatfield Borough Council | Councillor Julie Cragg | 07/09/2026 |
| Address | Date Sent | Expiry Date | Date Reconsulted | Reconsult Expiry Date |
|---|---|---|---|---|
| 10 Mardley Heights Welwyn AL6 0TX | 07/09/2026 | 28/09/2026 |
| Application Number | Proposal | Decision | Distance |
|---|---|---|---|
| 6/2025/1960/LAWP | Certificate of lawfulness for conversion of the detached garage into habitable space and replacing a garage door with french doors. | Granted | 0 |
| 6/2025/2022/HOUSE | Erection of a single storey rear infill extension and a single storey rear extension following the demolition of the existing single storey rear lean-to. Installation of decking and steps down to the garden along the rear elevation and alterations to fenestration. | Granted | 0 |
| 6/2022/2027/TPO | 2x large Oak trees to reduce by 30% - Close to the house and neighbours property along with excessive shading TPO 641 (2017) G4 | Granted | 0 |
| 6/2021/1697/TPO | T1 - Sweet Chestnut repollard back to previous points gaining some control and access of light. T2 - Overall reduce and shape all round by approx 25%. T3 - T6 Are all neighbours trees. Looking to cut all trees back to boundary line T3 - Oak Tree to cut tree back to boundary line. T4 - T5 Lime Trees to cut trees back to boundary line. T6 - Pine Tree to shorten just a couple of limbs back a couple of meters. | Granted | 0 |
| 6/2020/2928/TPO | G3 - Pine and Silver Birch - Reduce to ground level | Granted | 0 |
| 6/2020/0516/TPO | Reduce 4 x Oak Trees by 20% and thin by 20% | Granted | |
| 641 (2017) | for the continued amenity of the area following a review of the landscape. | 0 | |
| 6/2016/1793/TPO | Within the rear garden of 45 Mardley Hill Fell small decayed oak, Reduce oak back to previous pruning points and crown lift to 4m. High pollard two oaks to leave a scaffold framework Within the rear garden of 47: Crown reduce oak by 25% by TPO 24 (1976) | Granted | 0 |
| 6/2015/2135/TPO | DD Application - Removal of tree (species unknown) plus Beech tree and Birch tree covered by TPO 24 | Granted | 0 |
| 6/2015/2114/TPO | Reduce Two Oak trees by 30% covered by TPO 24 | Granted | 0 |
| N6/2014/1876/TP | fell pine tree (A5) covered by TPO24 (A3) | Granted | |
| N6/2012/1067/LUP | Use of garage a music teaching studio | Refused | 0 |
| N6/2012/1062/S73B | Variation of condition 1 (Time Extension) of planning permission N6/2009/351/FP | Granted | 0 |
| N6/2011/1756/TP | Reduce group of Oak trees in front garden by 3 metres | Granted | |
| N6/2010/0631/TP | Reduce and shape T1 & T2 by 25%, crown volume and crown lift to a height of 5m and removal of branches less than 50mm in diameter covered by TPO 24 AREA 3 | Granted | 0 |
| N6/2009/0351/FP | ALTERATIONS TO ROOF INCLUDING; RAISING THE RIDGE, TWO STOREY, SINGLE REAR, FRONT GABLE EXTENSION, PORCH AND THE INSERTION OF FRONT AND REAR DORMERS | Granted | 0 |
| N6/2008/0828/TP | CROWN RAISE TO 4m AND CROWN REDUCTION BY 20% TO OAK TREES (T3) COVERED BY TPO 24 | Granted | |
| N6/2004/0500/FP | ERECTION OF REAR CONSERVATORY | Granted | 0 |
| N6/2002/1663/FP | DETACHED GARAGE | Granted | 0 |
| N6/1999/0303/FP | Replacement of existing roof light with two front dormer windows | Refused | 0 |
| N6/1998/0958/FP | Proposed double garage in front garden | Granted | 0 |
| N6/1998/0131/TP | Reduce and reshape 2 No. Oak trees, covered by TPO 24, Area 3 | Granted | 0 |
| N6/1993/0167/FP | Single storey front extension | Granted | 0 |
| N6/1991/0747/TP | Consent to lop oak tree | Granted | 0 |
| N6/1989/0111/FP | Two new dormers to front elevation after removal of rooflight | Refused | 0 |
| N6/1988/0629/FP | Erection of detached double garage | Granted | 0 |
| N6/1986/0522/ | Two storey front and side extension | Granted | 0 |
| N6/1985/0741/FP | Single storey rear extension and loft conversion | Granted | 0 |
| N6/1983/0306/ | Porch and garage extension | Granted | 0 |
| N6/1980/0042/ | Conversion of cafe to residential dwelling and extension to garage | Granted | 0 |
| N6/1980/0830/ | Rear extension to provide a family room, play room and store | Granted | |
| N6/1979/0348/ | Single storey extension | Granted | 0 |
| N6/1979/0393/ | Extension to provide a playroom and extensions to kitchen, dining room and garage | Granted | |
| N6/1979/0735/ | New playroom and extensions to kitchen dining room and garage | Granted | |
| N6/1978/0078/ | Demolition of existing transport cafe and bungalow and erection of three detached houses | Granted | 0 |
| N6/1977/0451/ | Extension to cafe to provide overnight accommodation | Refused | 0 |
| N6/1977/0654/ | Demolition of existing late night transport cafe and bungalow and erection of 6 residential units | Refused | 0 |
| 24 (1976) | For the continued amenity of the land. | 0 | |
| N6/1976/0442/ | Site for demolition of existing cafe, bungalow and garages and erection of 8 dwellings with garages and parking areas | Refused | 0 |
| N6/1975/0063/ | Extension at floor level for bedrooms | Granted | 0 |
| N6/1975/0444/ | Site for block of 14 flats with garages and parking | Refused | 0 |
There are no NMAs associated with this application