12 Sycamore Avenue Hatfield AL10 8LZ

1. 14 Aug 2024

   Received by Welwyn Hatfield

2. 15 Aug 2024

   Validated

   Checked as complete and ready for consideration.

3. 9 Oct 2024

   Decision issued: Refused

4. 9 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.

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.

• 12 Sycamore Avenue Hatfield AL10 8LZ

  6/2024/2005/PN8 Submitted 18 Oct 2024 0m away

  Prior approval for the erection of a single storey rear extension measuring 5.9m in depth, 3m in height and 2.6m to the eaves

  Refused Prior approval Extension
  Small domestic

• 18 Sycamore Avenue Hatfield Hertfordshire AL10 8LZ

  6/2022/2646/LAWP Submitted 21 Nov 2022 55m away

  Certificate of lawfulness for single storey side extension, replacement of porch roof, alterations to existing openings and insertion of one front roof light

  Granted Lawful development Extension Loft or dormer +1
  Small domestic

• 2 Sycamore Avenue Hatfield AL10 8LZ

  6/2026/1160/HOUSE Submitted 3 Jul 2026 81m away

  Raising the roof height and converting the garage into habitable use, installation of a pergola to the rear elevation of the dwelling and alteration to fenestration.

  Granted Householder Windows or glazing
  Domestic

• 17 Sycamore Avenue Hatfield AL10 8LZ

  6/2026/1031/HOUSE Submitted 12 Jun 2026 83m away

  Erection of a part single storey, part two-storey rear extension, garage conversion, front porch extension, alterations to fenestration and external materials

  Withdrawn Householder Extension Windows or glazing
  Small domestic

• 96 Briars Lane Hatfield AL10 8EY

  6/2021/1146/HOUSE Submitted 8 Apr 2021 86m away

  Single storey front extension and alterations to fenestration on existing first floor front elevation

  Granted Householder Extension Windows or glazing
  Small domestic

• 71 Briars Lane Hatfield AL10 8EX

  6/2026/1336/HOUSE Submitted 30 Jul 2026 131m away

  83% historically approved · decision due ~28 Sep

  Erection of a single storey side extension

  Awaiting decision Householder Extension
  Small domestic

• 6/2026/1228/HOUSE Granted

  109 Mount Way Welwyn Garden City AL7 4LA

  Erection of single storey front extension

  13 Jul 2026 Householder
• 6/2026/1011/HOUSE Granted

  5 Brookside Crescent Cuffley Potters Bar EN6 4QW

  Erection of rear extension, single storey side extension, new porch, additions/alterations to windows on side elevation and demolition of garage

  9 Jun 2026 Householder
• 6/2026/0703/HOUSE Granted

  57 Great North Road Brookmans Park AL9 6LA

  Erection of part double part single storey rear extension, single storey front porch extension, raising of roof and eaves to accommodate loft conversion, alterations to materials and fenestration, erection of front boundary wall and gates

  20 Apr 2026 Householder
• 6/2026/0534/HOUSE Refused

  16 Chipmunk Chase Hatfield AL10 9GH

  Retention of single storey rear extension and garage conversion to study/office

  24 Mar 2026 Householder
• 6/2026/1175/HOUSE Granted

  5A Honeycroft Welwyn Garden City AL8 6HR

  Erection of a single storey rear extension, alterations to opening on side elevation and garden room with covered area following demolition of conservatory

  7 Jul 2026 Householder