15 Mardley Wood Welwyn AL6 0UY

1. 2 Jul 2021

   Received by Welwyn Hatfield

2. 26 Aug 2021

   Decision issued: Refused

3. 25 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 23 Mardley Wood Welwyn AL6 0UY

  6/2023/0724/HOUSE Submitted 31 Mar 2023 50 yards away

  Erection of a part two, part single storey side and rear extension, conversion of loft into habitable accommodation with construction of side dormer window, insertion of roof lights, and alterations to openings

  Granted Householder Extension Loft or dormer +1
  Small domestic

• 33 Mardley Wood Welwyn AL6 0UY

  6/2023/1091/TPO Submitted 23 May 2023 50 yards away

  2x Silver Birches - remove the dead trees and offshoot as they are threat to the property and road users. Another species will be planted to replace the dead trees.

  Granted Trees

• 3 Heathlands Welwyn AL6 0UU

  6/2026/0560/HOUSE Submitted 26 Mar 2026 100 yards away

  Erection of rear and side single-storey extension with conversion of garage to habitable accommodation

  Granted Householder Extension
  Small domestic

• 3 Heathlands Welwyn AL6 0UU

  6/2023/0478/HOUSE Submitted 2 Mar 2023 150 yards away

  Erection of two storey side extension

  Refused Householder Extension
  Domestic

• 14 Mardley Wood Welwyn AL6 0UX

  6/2021/1443/TPO Submitted 7 May 2021 200 yards away

  Crown lift 3 x Oak trees (T1-3) and 2 x Larch trees (T4, T6), T7)by 3m and remove dead wood, fell 2 x Larch trees (T5, T9) to ground level, reduce 1 x Larch tree (T8) by 20% covered by TPO

  Granted Trees

• 5A Roundabout Lane Welwyn AL6 0TH

  6/2024/1324/TPO Submitted 10 Jul 2024 200 yards away

  TPO 915 (2018) T1 (Hornbeam) Re-coppice of Hornbeam to approximately 2m to allow adequate re growth. Old Hornbeam stool is close to the garage and has signs of decay from previous pruning wounds. Also a potential inclusion on the south side.

  Refused Trees

• 6/2026/1287/LAWE Refused

  Woodhurst Farm, Stables Cattlegate Road Northaw Potters Bar EN2 8AU

  Certificate of Lawfulness for existing use of a former agricultural building (Barn) as a self- contained single residential dwelling house (Use Class C3) following its conversion and continuous occupation for a period in excess of 10 years prior to the date of this application

  Received 22 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1306/LAWP Granted

  184 Unit 4 St Albans Road West Hatfield AL10 0TF

  Certificate of lawfulness for the change of use of the front office portion of Unit 4 to a daycare/crèche facility, to include an internal mezzanine, within Use Class E.

  Received 27 Jul, published by the council 22 Aug 2026 Lawful development
• 6/2026/1328/LAWP Granted

  41 Great North Road Welwyn Garden City AL8 7TJ

  Certificate of lawfulness for a proposed hip to gable loft conversion with rear facing dormer and single storey side extension, plus insertion of rooflight to front elevation

  Received 29 Jul, published by the council 9 Aug 2026 Lawful development
• 6/2026/1288/LAWE Granted

  1 The Limberlost Welwyn AL6 9TS

  Certificate of existing lawfulness for a single storey extension

  Received 22 Jul, published by the council 22 Aug 2026 Lawful development
• 6/2026/1297/LAWE Granted

  White Lodge Farm The Bellbrook Bulls Lane Hatfield AL9 7AZ

  Certificate of lawfulness in relation to existing gate and fencing

  Received 23 Jul, published by the council 9 Aug 2026 Lawful development