16 Chipmunk Chase Hatfield AL10 9GH

1. 24 Mar 2026

   Received by Welwyn Hatfield

2. 8 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. 15 Aug 2026

   Status changed to Under Consideration

   Previously Under Consultation.

5. 2 Sep 2026

   Decision issued: Refused

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.

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.

• 2 Barlow Close Hatfield AL10 9GZ

  6/2023/0298/LAWP Submitted 7 Feb 2023 250 yards away

  Certificate of lawfulness for single storey side and rear extension

  Granted Lawful development Extension
  Small domestic

• 2 Barlow Close Hatfield AL10 9GZ

  6/2023/0065/COND Submitted 11 Jan 2023 250 yards away

  Submission of details pursuant to condition number 1 (material sample) on planning permission 6/2021/3553/HOUSE

  Granted Conditions
  Major scheme

• 161 Cunningham Avenue Hatfield AL10 9JZ

  6/2024/2285/LAWP Submitted 27 Nov 2024 250 yards away

  Certificate of lawfulness for use of a HMO (C4) as a children's home (C2)

  Refused Lawful development

• Howe Dell School The Runway Hatfield AL10 9AH

  6/2026/0478/FULL Submitted 16 Mar 2026 250 yards away

  Construction of a Multi Use Games Area

  Granted Full applications

• 48 The Runway Hatfield Hertfordshire AL10 9GL

  6/2022/2506/LAWP Submitted 1 Nov 2022 250 yards away

  Certificate of lawfulness for the change of use from C3 dwellinghouse to C2 residential institution

  Refused Lawful development
  Domestic

• Howe Dell School The Runway Hatfield AL10 9AH

  6/2026/1419/COND Submitted 11 Aug 2026 250 yards away

  Submission of details pursuant to Condition 1 (Biodiversity Gain Plan), Condition 2 (Landscape and Ecological Management Plan (LEMP)), Condition 3 (Construction Traffic Management Plan (CTMP)) and Condition 4 (Tree Survey, Arboricultural Method Statement and Tree Protection Strategy) on planning permission 6/2026/0478/FULL

  Granted Conditions Trees

• 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