18 Mardley Hill Welwyn AL6 0TN

1. 9 Jul 2021

   Received by Welwyn Hatfield

2. 14 Oct 2021

   Decision issued: Granted

3. 7 Oct 2026

   Added to PlanIndex

Welwyn Hatfield granted permission on 14 October 2021, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 16 Mardley Hill Welwyn AL6 0TN

  6/2021/0944/TPO Submitted 23 Mar 2021 50 yards away

  T1 - Beech 5-6m crown reduction T2 - Beech 5-6m crown reduction

  Granted Trees

• 16 Mardley Hill Welwyn AL6 0TN

  6/2026/1108/TPO Submitted 26 Jun 2026 50 yards away

  T1 - 1 x Oak to reduce by approximately 2m height and width, ensuring to cut back clearing the house sufficiently. Oak reducing due to canopy in close proximity to property and roof. (Covered by TPO 24 A3)

  Granted Trees

• 12 Mardley Hill Welwyn AL6 0TN

  6/2021/0943/TPO Submitted 23 Mar 2021 50 yards away

  T1 - re-pollard 3-4m T2 - fell Beech tree to ground level T3 - oak tree 3-4m crown reduction T4 - Beech tree 5-6m crown reduction

  Refused Trees

• 12 Mardley Hill Welwyn AL6 0TN

  6/2026/1205/TPO Submitted 10 Jul 2026 50 yards away

  TPO 24 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

  Granted Trees

• 12 Mardley Hill Welwyn AL6 0TN

  6/2021/2127/TPO Submitted 14 Jul 2021 50 yards away

  T1 - oak - crown reduce 1-2m and deadwood T2 - oak fell to ground level T3 - beech - crown reduce 4-5m T4 - beech - crown reduce 4-5m

  Granted Trees

• 41 Mardley Hill Welwyn AL6 0TT

  6/2024/0758/FULL Submitted 24 Apr 2024 50 yards away

  Retention of outdoor seating area

  Granted Full applications

• 6/2026/1408/HOUSE Granted

  Wytmead Essendon Hill Essendon Hatfield AL9 6AW

  Reinstatement of the previously truncated chimney

  Received 10 Aug, published by the council 31 Aug 2026 Householder
• 6/2026/1170/HOUSE Granted

  6 Highfields Cuffley Potters Bar EN6 4EL

  Conversion of garage into study room with alterations to the front elevation, repositioning of lower ground floor entrance hall, erection of two storey infill side extension with internal alterations, replacement of existing front and side building brickwork with K-Render finish, removal of chimney and installation of 2 rooflights

  Received 6 Jul, published by the council 30 Jul 2026 Householder
• 6/2026/1177/HOUSE Granted

  Red Lodge High Road Essendon Hatfield AL9 6HU

  Erection of two single-storey side extensions, detached garage with barn-hipped roof and photovoltaic panels, relocated garden room and associated works to hardstanding and site layout.

  Received 7 Jul, published by the council 9 Aug 2026 Householder
• 6/2026/1376/HOUSE Granted

  18 Briary Wood Lane Welwyn AL6 0TF

  Erection of a single storey ground floor extension & part two storey rear, raising the roof and alterations to facilitate loft conversion to include new crown roof with front & rear dormers

  Received 4 Aug, published by the council 22 Aug 2026 Householder
• 6/2026/1392/HOUSE Granted

  1 Little Wade Welwyn Garden City AL7 4LE

  Erection of a single storey rear extension

  Received 6 Aug, published by the council 15 Aug 2026 Householder